Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
4 Contract API jobs in Blackfriars + 20 miles
)
Senior Android Engineer (UI/UX & Welcome Manager)
Senior Android Engineer (UI/UX & Welcome Manager)
Ventula Consulting Limited
The City, EC3V 9DU
Up to £140,000 per annum
API & Backend Integration: Partner with our backend (Application & AI Orchestration) engineers to define and integrate the client-side APIs and data models required to power the Welcome Manager's features, from live transcription to post-call entity-extracted summaries.
API & Backend Integration: Partner with our backend (Application & AI Orchestration) engineers to define and integrate the client-side APIs and data models required to power the Welcome Manager's features, from live transcription to post-call entity-extracted summaries.
NEW
)
Opportunity for a AI Engineer Developer to work for an established FinTech company * Salary up to £75k depending on experience * Hybrid working out of Sevenoaks HQ * Tech stack - LLMs, Langchain, OpenAI, n8n, Flowable - We're working with a well-established, technology-driven FinTech company that's redefining how automation and AI power financial services. Combining innovation with stability, they've built a reputation as one of the UK's fastest-growing and most forward-thinking finance providers, now they're looking to strengthen their AI and automation capability. * Build intelligent workflows using n8n, Microsoft Power Automate, Flowable, and similar tools. * Design and implement agentic AI solutions, integrating LLMs and frameworks such as LangChain, AutoGen, and RAG pipelines with platforms like OpenAI.
Opportunity for a AI Engineer Developer to work for an established FinTech company * Salary up to £75k depending on experience * Hybrid working out of Sevenoaks HQ * Tech stack - LLMs, Langchain, OpenAI, n8n, Flowable - We're working with a well-established, technology-driven FinTech company that's redefining how automation and AI power financial services. Combining innovation with stability, they've built a reputation as one of the UK's fastest-growing and most forward-thinking finance providers, now they're looking to strengthen their AI and automation capability. * Build intelligent workflows using n8n, Microsoft Power Automate, Flowable, and similar tools. * Design and implement agentic AI solutions, integrating LLMs and frameworks such as LangChain, AutoGen, and RAG pipelines with platforms like OpenAI.
)
Staff Back End Engineer
Staff Back End Engineer
John Lewis Head Office
SW1V, South West London, SW1V 2QQ
Up to £94,200 per annum
REST API development and/or consumption.
REST API development and/or consumption.
NEW
)
Most functionality is written by the API or integrations team but we need a strong developer that can do both.
Most functionality is written by the API or integrations team but we need a strong developer that can do both.
NEWFEATURED
13 exact matches jobs are outside your preferred location
)
We employ a micro front-end (MFE) architecture on the web, and agentic workflows with API-first services behind it, to integrate risk insights seamlessly across workflows and surfaces. * Design, develop, and operate secure, scalable APIs/microservices in Python (FastAPI) or Java (Spring Boot), following API-first principles * Experience building and consuming APIs; strong grasp of REST/gRPC and API
We employ a micro front-end (MFE) architecture on the web, and agentic workflows with API-first services behind it, to integrate risk insights seamlessly across workflows and surfaces. * Design, develop, and operate secure, scalable APIs/microservices in Python (FastAPI) or Java (Spring Boot), following API-first principles * Experience building and consuming APIs; strong grasp of REST/gRPC and API
NEW
)
Position: AI Engineer / AI Agent / Backend AI Engineer - Location: Remote - Work Type: Contract - We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems - Why join us? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
Position: AI Engineer / AI Agent / Backend AI Engineer - Location: Remote - Work Type: Contract - We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems - Why join us? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
NEWFEATURED
)
Experience with API testing tools (e.g., Postman, REST Assured).
Experience with API testing tools (e.g., Postman, REST Assured).
NEW
We are looking for an Engineering Manager (f/m/d) to lead a high-performing, remote-first API development team based in Europe who are driving Contentful's REST and GraphQL APIs that enable customers to manage and deliver content at scale. We aim to help customers accelerate innovation, reduce operational complexity, and unlock new growth opportunities through a secure, performant, and extensible API ecosystem. * Lead and grow a globally-distributed API development team, ensuring a culture of high performance, collaboration, and continuous improvement. * Experience with API-first platforms.
We are looking for an Engineering Manager (f/m/d) to lead a high-performing, remote-first API development team based in Europe who are driving Contentful's REST and GraphQL APIs that enable customers to manage and deliver content at scale. We aim to help customers accelerate innovation, reduce operational complexity, and unlock new growth opportunities through a secure, performant, and extensible API ecosystem. * Lead and grow a globally-distributed API development team, ensuring a culture of high performance, collaboration, and continuous improvement. * Experience with API-first platforms.
)
4+ years automation testing skills (Selenium, Katalon, GT-UI, GT-API). * Web services testing / API testing skills is a plus.
4+ years automation testing skills (Selenium, Katalon, GT-UI, GT-API). * Web services testing / API testing skills is a plus.
NEW
Assist clients in seamless API integration, furnishing comprehensive documentation and hands-on support for smooth implementation. * Strong knowledge of API integration, RESTful APIs, and API troubleshooting.
Assist clients in seamless API integration, furnishing comprehensive documentation and hands-on support for smooth implementation. * Strong knowledge of API integration, RESTful APIs, and API troubleshooting.
The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
NEW
We are building the first European Investment API that empowers businesses to offer seamless investment experiences to their users. We are looking for a full-time Head of Engineering to help us build a securities API for financial institutions, the first API of that kind in Europe. These teams are responsible for critical domains such as Orders, Trading Partner integrations, Position, and Wealth Management, all of which are essential for Upvests Investment API. The Brokerage Tribe plays a crucial role in the Investment API Platform, overseeing a wide range of user journey aspects. * Assume ownership of business-critical components within the Investment API, influencing its roadmap and delivering strategic impact to establish Upvest as a reliable partner. * Experience
We are building the first European Investment API that empowers businesses to offer seamless investment experiences to their users. We are looking for a full-time Head of Engineering to help us build a securities API for financial institutions, the first API of that kind in Europe. These teams are responsible for critical domains such as Orders, Trading Partner integrations, Position, and Wealth Management, all of which are essential for Upvests Investment API. The Brokerage Tribe plays a crucial role in the Investment API Platform, overseeing a wide range of user journey aspects. * Assume ownership of business-critical components within the Investment API, influencing its roadmap and delivering strategic impact to establish Upvest as a reliable partner. * Experience
NEW
)
Position Summary - Samsung is a global leader in high-end mobile devices, and a major part of our success comes from the outstanding real-time graphics experience (UX) we provide for our demanding customers. To ensure we are always on the cutting edge of performance and quality, we are looking for enthusiastic and innovative engineers to join our team in Staines-upon-Thames. This is a great opportunity to contribute to the next generation of mobile devices from Samsung. We need talented engineers with a strong low-level graphics and GPU development background on the Android platform, ideally with experience of working in the consumer electronics industry. The successful candidate will contribute to new, high-performance graphics solutions, integrate our solutions with new hardware platforms, optimise the Android OS graphics stack, benchmark our systems against competi
Position Summary - Samsung is a global leader in high-end mobile devices, and a major part of our success comes from the outstanding real-time graphics experience (UX) we provide for our demanding customers. To ensure we are always on the cutting edge of performance and quality, we are looking for enthusiastic and innovative engineers to join our team in Staines-upon-Thames. This is a great opportunity to contribute to the next generation of mobile devices from Samsung. We need talented engineers with a strong low-level graphics and GPU development background on the Android platform, ideally with experience of working in the consumer electronics industry. The successful candidate will contribute to new, high-performance graphics solutions, integrate our solutions with new hardware platforms, optimise the Android OS graphics stack, benchmark our systems against competi
NEW
)
Connect with Eutelsat Group - Be part of a new era in communications, transforming connectivity with Eutelsat Group the worlds first GEO-LEO integrated global satellite operator. As a leader in satellite communications, we provide global connectivity solutions - connecting businesses, communities, and governments around the world. We can connect you at on land, at sea and in the air. We also deliver broadcast television channels and packages, transmitting vital news reports around the world. * Pioneer the future of Space Technology * Bring connectivity to remote frontiers * Collaborate with customer-centric experts * Embrace cultural diversity in our global team - In a dynamic industry where passion drives our teams to make a difference to become the most trusted partner for global satellite connectivity, you will elevate your skills in a stretching, rewarding, and me
Connect with Eutelsat Group - Be part of a new era in communications, transforming connectivity with Eutelsat Group the worlds first GEO-LEO integrated global satellite operator. As a leader in satellite communications, we provide global connectivity solutions - connecting businesses, communities, and governments around the world. We can connect you at on land, at sea and in the air. We also deliver broadcast television channels and packages, transmitting vital news reports around the world. * Pioneer the future of Space Technology * Bring connectivity to remote frontiers * Collaborate with customer-centric experts * Embrace cultural diversity in our global team - In a dynamic industry where passion drives our teams to make a difference to become the most trusted partner for global satellite connectivity, you will elevate your skills in a stretching, rewarding, and me
NEW
)
Join us at Entrust - At Entrust, were shaping the future of identity centric security solutions. From our comprehensive portfolio of solutions to our flexible, global workplace, we empower careers, foster collaboration, and build solutions that help keep the world moving safely. Get to Know Us - Headquartered in Minnesota, Entrust is an industry leader in identity-centric security solutions, serving over 150 countries with cutting-edge, scalable technologies. But our secret weapon? Our people. Its the curiosity, dedication, and innovation that drive our success and help us anticipate the future. Senior MLOps Engineer - About the position - Were looking for an experienced MLOps Engineer to build and operate the platform and tooling that powers our identity-verification products. Youll join a team supporting Applied Scientists and Machine Learning Engineers across count
Join us at Entrust - At Entrust, were shaping the future of identity centric security solutions. From our comprehensive portfolio of solutions to our flexible, global workplace, we empower careers, foster collaboration, and build solutions that help keep the world moving safely. Get to Know Us - Headquartered in Minnesota, Entrust is an industry leader in identity-centric security solutions, serving over 150 countries with cutting-edge, scalable technologies. But our secret weapon? Our people. Its the curiosity, dedication, and innovation that drive our success and help us anticipate the future. Senior MLOps Engineer - About the position - Were looking for an experienced MLOps Engineer to build and operate the platform and tooling that powers our identity-verification products. Youll join a team supporting Applied Scientists and Machine Learning Engineers across count
NEW
)
HPC Global Remote Service Engineer – Complex HPC Upgrades
HPC Global Remote Service Engineer – Complex HPC Upgrades
Hewlett Packard Enterprise
South East
Competitive
Hewlett Packard Enterprise is the global edge-to-cloud company advancing the way people live and work. We help companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive in todays complex world. Our culture thrives on finding new and better ways to accelerate whats next. We know varied backgrounds are valued and succeed here. We have the flexibility to manage our work and personal needs. We make bold moves, together, and are a force for good. If you are looking to stretch and grow your career our culture will embrace you. Open up opportunities with HPE. The Hewlett Packard Enterprise (HPE) HPC Business Unit has an exciting opportunity for an experienced engineer dedicated to managing and executing complex High-Performance Computing (HPC) upg
Hewlett Packard Enterprise is the global edge-to-cloud company advancing the way people live and work. We help companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive in todays complex world. Our culture thrives on finding new and better ways to accelerate whats next. We know varied backgrounds are valued and succeed here. We have the flexibility to manage our work and personal needs. We make bold moves, together, and are a force for good. If you are looking to stretch and grow your career our culture will embrace you. Open up opportunities with HPE. The Hewlett Packard Enterprise (HPE) HPC Business Unit has an exciting opportunity for an experienced engineer dedicated to managing and executing complex High-Performance Computing (HPC) upg
NEW
RESTful API development
RESTful API development
NEW
These jobs might also interest you
)
Position: PSA Engineer, HW and System - We are seeking an experienced PSA Engineer Hardware and System to join our EMS e-terra / ADMS Series 3 team. Department: EMS e-terra / ADMS Series 3 - Location: Fully Remote (UK/Europe) Contract Duration: 12 months (with extension opportunity)Contract Type: (UK- Inside IR35), (Europe -B2B), (Permanent contracts available as well UK/Europe) Start Date: November 1, 2025 (Flexible) Budget: Flexible - About the Role - In this role, you will work on mission-critical systems, ensuring the stability, configuration, and continuous improvement of infrastructure supporting our advanced energy management applications. You will collaborate with cross-functional teams to troubleshoot issues, deliver innovative solutions, and maintain high levels of customer satisfaction. Key Responsibilities * Lead system-le
Position: PSA Engineer, HW and System - We are seeking an experienced PSA Engineer Hardware and System to join our EMS e-terra / ADMS Series 3 team. Department: EMS e-terra / ADMS Series 3 - Location: Fully Remote (UK/Europe) Contract Duration: 12 months (with extension opportunity)Contract Type: (UK- Inside IR35), (Europe -B2B), (Permanent contracts available as well UK/Europe) Start Date: November 1, 2025 (Flexible) Budget: Flexible - About the Role - In this role, you will work on mission-critical systems, ensuring the stability, configuration, and continuous improvement of infrastructure supporting our advanced energy management applications. You will collaborate with cross-functional teams to troubleshoot issues, deliver innovative solutions, and maintain high levels of customer satisfaction. Key Responsibilities * Lead system-le
FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes. As a hands-on Engineer, youll build with purpose solving real-world problems with measurable impact. Our engineers operate with a clear 'why' staying aligned to strategic outcomes while putting the customer at the center of every decision. * Lead with data: You trust the numbers, validate assumptions, and learn from failures. FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategie
FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes. As a hands-on Engineer, youll build with purpose solving real-world problems with measurable impact. Our engineers operate with a clear 'why' staying aligned to strategic outcomes while putting the customer at the center of every decision. * Lead with data: You trust the numbers, validate assumptions, and learn from failures. FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategie
)
Senior Project Controls Engineers work as part of our project controls team on high profile, high value infrastructure projects, providing performance reporting and analysis support. We are currently have a number of opportunities for Senior Project Controls Engineers to join our busy and expanding London infrastructure business, undertake duties on a number of high profile, London based infrastructure projects. * Senior Project Controls Engineers should be proactive, self-starters with well developed communications and analytical skills. Typical activities include working with cost and planning engineers to develop work breakdown structures and robust performance baselines, establish
Senior Project Controls Engineers work as part of our project controls team on high profile, high value infrastructure projects, providing performance reporting and analysis support. We are currently have a number of opportunities for Senior Project Controls Engineers to join our busy and expanding London infrastructure business, undertake duties on a number of high profile, London based infrastructure projects. * Senior Project Controls Engineers should be proactive, self-starters with well developed communications and analytical skills. Typical activities include working with cost and planning engineers to develop work breakdown structures and robust performance baselines, establish
NEW
)
The Senior Vice President, ONE Delivery and Solution Engineering role will be responsible and accountable for all services delivered by the ONE organization to the CTOs they are aligned to, ensuring that customer needs, portfolio outcomes, and technology service delivery are consistently aligned with the CTOs strategic vision, driving enterprise-level impact across the organization. This role complements the work of CTOs and other senior leaders by bridging strategy with execution by ONE, ensuring alignment across portfolios, and providing real-time transparency into risks, roadmaps, and enterprise outcomes. Serves as the single point of accountability for technology service delivery, infrastructure design engineering and Site Reliability Engineering aligning customer needs and portfo
The Senior Vice President, ONE Delivery and Solution Engineering role will be responsible and accountable for all services delivered by the ONE organization to the CTOs they are aligned to, ensuring that customer needs, portfolio outcomes, and technology service delivery are consistently aligned with the CTOs strategic vision, driving enterprise-level impact across the organization. This role complements the work of CTOs and other senior leaders by bridging strategy with execution by ONE, ensuring alignment across portfolios, and providing real-time transparency into risks, roadmaps, and enterprise outcomes. Serves as the single point of accountability for technology service delivery, infrastructure design engineering and Site Reliability Engineering aligning customer needs and portfo
NEW
)
The Product Test and Diagnosis team requires more expertise and experience in the area of board / PCBA hardware test as part of our mission to deliver the high quality manufacturing test solutions that our advanced technology products require. * Experience in manufacturing test of advanced electronic systems - A melting pot of AI research specialists, silicon designers, software engineers and systems architects, Graphcore enjoys a culture of continuous learning and constant innovation. The role requires close interaction with the hardware design team and other parts of the PTD team in order to define and develop appropriate test solutions using techniques such as boundary scan and embedded functional test. The Product
The Product Test and Diagnosis team requires more expertise and experience in the area of board / PCBA hardware test as part of our mission to deliver the high quality manufacturing test solutions that our advanced technology products require. * Experience in manufacturing test of advanced electronic systems - A melting pot of AI research specialists, silicon designers, software engineers and systems architects, Graphcore enjoys a culture of continuous learning and constant innovation. The role requires close interaction with the hardware design team and other parts of the PTD team in order to define and develop appropriate test solutions using techniques such as boundary scan and embedded functional test. The Product
NEW
)
Partnering with your product manager, other engineering managers, staff engineers, architect, agile coach and engineering director to formulate a domain level technical strategy - Join our team and youll be responsible for providing technical leadership to all engineering and development areas across your domain, developing and executing an engineering strategy aligned to the portfolio and global tech strategies. * Managing and mentoring engineering professionals in your teams and domain, setting objectives for your teams and domain, owning the delivery of the outcomes, monitoring ongoing progress and performance within the OKR framework * Facilitate communication between teams under your leadership and enabling free exchange of information within your sphere of influ
Partnering with your product manager, other engineering managers, staff engineers, architect, agile coach and engineering director to formulate a domain level technical strategy - Join our team and youll be responsible for providing technical leadership to all engineering and development areas across your domain, developing and executing an engineering strategy aligned to the portfolio and global tech strategies. * Managing and mentoring engineering professionals in your teams and domain, setting objectives for your teams and domain, owning the delivery of the outcomes, monitoring ongoing progress and performance within the OKR framework * Facilitate communication between teams under your leadership and enabling free exchange of information within your sphere of influ
PREMIUM
)
Head of Engineering, Fintech Startup
Head of Engineering, Fintech Startup
Richard Wheeler Associates
EC1V, City of London
Negotiable + Equity
Head of Engineering/Founding Engineer, Fintech Startup - As Head of Engineering youll touch architecture, infra, product, distribution; youll write code that defines the company - and make decisions that define its culture. You will be ownership-oriented, obsessed with quality, user-driven, eager to get in front of customers, exceptionally driven, hungry, passionate, personable. TypeScript, Next.js, AWS, AI - Six-figure salary + Equity that exceeds market-standard - London - hybrid - Our client is an early-stage AI start-up with significant funding secured, early infrastructure built, MVP already live, 3 major pilot partners in motion. The vision set: become the agentic workflow automation for accounting. As Founding Engineer you will create the tech team. The person were seeking will indisputably have tech start-up e
Head of Engineering/Founding Engineer, Fintech Startup - As Head of Engineering youll touch architecture, infra, product, distribution; youll write code that defines the company - and make decisions that define its culture. You will be ownership-oriented, obsessed with quality, user-driven, eager to get in front of customers, exceptionally driven, hungry, passionate, personable. TypeScript, Next.js, AWS, AI - Six-figure salary + Equity that exceeds market-standard - London - hybrid - Our client is an early-stage AI start-up with significant funding secured, early infrastructure built, MVP already live, 3 major pilot partners in motion. The vision set: become the agentic workflow automation for accounting. As Founding Engineer you will create the tech team. The person were seeking will indisputably have tech start-up e
)
We're looking for an experienced Contract AWS Cloud Engineer to join a secure government-related project based onsite in Leeds. If you're a contract AWS Cloud Engineer with active enhanced SC or DV clearance looking for you're next exciting project. This role is ideally suited to someone with strong hands-on AWS experience and a solid understanding of cloud security and automation within highly regulated environments. * Design, build, and manage AWS cloud infrastructure in a secure, scalable, and resilient environments. * Integrate AWS security logs and data flows with SIEM platforms (e.g., Splunk). * Support live cloud environments through monitoring, troubleshooting, and performance optimisation. *
We're looking for an experienced Contract AWS Cloud Engineer to join a secure government-related project based onsite in Leeds. If you're a contract AWS Cloud Engineer with active enhanced SC or DV clearance looking for you're next exciting project. This role is ideally suited to someone with strong hands-on AWS experience and a solid understanding of cloud security and automation within highly regulated environments. * Design, build, and manage AWS cloud infrastructure in a secure, scalable, and resilient environments. * Integrate AWS security logs and data flows with SIEM platforms (e.g., Splunk). * Support live cloud environments through monitoring, troubleshooting, and performance optimisation. *
NEW