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        Last 14 days
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        9 Permanent API jobs in Hatfield + 20 miles

        Full Stack Engineer

        McGregor Boyall Associates Limited
        City of London (EC1)
        £70000 - £100000 per annum
        AWS (Lambda, Fargate, API Gateway, AppSync)
        AWS (Lambda, Fargate, API Gateway, AppSync)
        FEATURED
        As part of this journey, they're looking for an Engineering Manager to build and lead a brand-new engineering function focused on developing scalable Python services, API architecture, and large-scale data integrations that enable AI products across the organisation. * Experience delivering API-first platforms and distributed systems.
        As part of this journey, they're looking for an Engineering Manager to build and lead a brand-new engineering function focused on developing scalable Python services, API architecture, and large-scale data integrations that enable AI products across the organisation. * Experience delivering API-first platforms and distributed systems.
        more
        FEATURED

        Performance and Monitoring Engineer

        Solus Accident Repair Centres
        North London, London
        GBP £40,000.00/Yr. - GBP £50,000.00/Yr.
        Excellent understanding of cloud performance, IaaS/PaaS, networking fundamentals, API performance and capacity modelling * Confident scripting and automation skills (PowerShell, Azure Automation, Graph API)
        Excellent understanding of cloud performance, IaaS/PaaS, networking fundamentals, API performance and capacity modelling * Confident scripting and automation skills (PowerShell, Azure Automation, Graph API)
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        You will be an experienced Azure/Microsoft Fabric Data Engineer and will help design, build and maintain modern data platforms. The role will focus on Microsoft Fabric, Azure data services, Lakehouse architecture, data ingestion, transformation, modelling, governance and AI-ready analytics. Skills/Experience - Strong experience with Microsoft Azure data services and modern cloud data engineering. Hands-on experience with Microsoft Fabric, including Lakehouse, Warehouse, Pipelines, Dataflows, Notebooks and Power BI. Good understanding of data lake, lakehouse and warehouse architecture. Experience building data ingestion and transformation pipelines from multiple source systems. Strong SQL skills and experience working with relational data models. Experience with Python and/or PySpark for data transformation and automation.
        You will be an experienced Azure/Microsoft Fabric Data Engineer and will help design, build and maintain modern data platforms. The role will focus on Microsoft Fabric, Azure data services, Lakehouse architecture, data ingestion, transformation, modelling, governance and AI-ready analytics. Skills/Experience - Strong experience with Microsoft Azure data services and modern cloud data engineering. Hands-on experience with Microsoft Fabric, including Lakehouse, Warehouse, Pipelines, Dataflows, Notebooks and Power BI. Good understanding of data lake, lakehouse and warehouse architecture. Experience building data ingestion and transformation pipelines from multiple source systems. Strong SQL skills and experience working with relational data models. Experience with Python and/or PySpark for data transformation and automation.
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        Founding Engineer / Technical Lead

        Coburg Banks Limited
        City of London (EC1)
        £110000 - £120000 per annum + Bonus
        Role: Founding Engineer / Technical Lead - Location: Central London - Site Based - Salary: £120,000 plus Bonus - An early-stage venture is building the payments layer for connected vehicles - enabling cars to automatically detect, process, and settle real-world road charges without driver intervention. Parking. Tolls. Congestion charging. Airport drop-offs. Today these systems are fragmented, manual, and operationally painful. The mission: make vehicle payments invisible. The business is launching where the pain is greatest - rental and fleet operations - helping eliminate unpaid charges, reduce admin overhead, and improve customer experience through intelligent automation. The role will commence in July, so you will need to be available to start quickly. The Opportunity - This is a rare chance to join at day one and shape both the product and engineering function from the ground up.
        Role: Founding Engineer / Technical Lead - Location: Central London - Site Based - Salary: £120,000 plus Bonus - An early-stage venture is building the payments layer for connected vehicles - enabling cars to automatically detect, process, and settle real-world road charges without driver intervention. Parking. Tolls. Congestion charging. Airport drop-offs. Today these systems are fragmented, manual, and operationally painful. The mission: make vehicle payments invisible. The business is launching where the pain is greatest - rental and fleet operations - helping eliminate unpaid charges, reduce admin overhead, and improve customer experience through intelligent automation. The role will commence in July, so you will need to be available to start quickly. The Opportunity - This is a rare chance to join at day one and shape both the product and engineering function from the ground up.
        more

        38 exact matches jobs are outside your preferred location

        FDE / Customer Engineer | London (5 Days Onsite) | Conversational AI / Enterprise SaaS | Hypergrowth AI Startup | Python, APIs, Integrations, LLMs | £150k-£180k + Equity + Benefits - A hypergrowth AI company is building enterprise-grade conversational AI agents used by some of the world's largest brands to automate and transform customer experience across voice, chat, email, and SMS. Backed by top-tier investors and scaling aggressively, they are now building a dedicated technical delivery function responsible for deploying AI agents into complex enterprise environments. This role sits at the intersection of engineering, AI workflows, and customer delivery, helping enterprise customers launch production-grade AI systems that drive measurable business impact. They are looking for technical, customer-facing engineers with experience delivering complex B2B SaaS solutions ...
        FDE / Customer Engineer | London (5 Days Onsite) | Conversational AI / Enterprise SaaS | Hypergrowth AI Startup | Python, APIs, Integrations, LLMs | £150k-£180k + Equity + Benefits - A hypergrowth AI company is building enterprise-grade conversational AI agents used by some of the world's largest brands to automate and transform customer experience across voice, chat, email, and SMS. Backed by top-tier investors and scaling aggressively, they are now building a dedicated technical delivery function responsible for deploying AI agents into complex enterprise environments. This role sits at the intersection of engineering, AI workflows, and customer delivery, helping enterprise customers launch production-grade AI systems that drive measurable business impact. They are looking for technical, customer-facing engineers with experience delivering complex B2B SaaS solutions ...
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        As a global leader in application and API security, F5 is expanding its capabilities into AI Runtime Security, ensuring organizations can safely operationalize Generative AI across critical business workflows.
        As a global leader in application and API security, F5 is expanding its capabilities into AI Runtime Security, ensuring organizations can safely operationalize Generative AI across critical business workflows.
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        Agility core practices, Agility core practices, API and platform design, Cloud Platforms, Collaboration, Communication, Configuration management and release, Continuous deployment and release, Creating a high performing team, Database Design, Digital Project Management, Documentation and knowledge sharing, Emerging technology monitoring, Facilitation, Information Security, Mentoring, Metrics definition and instrumentation, NoSql data modelling, Problem Solving, Relational Data Modelling, Risk Management, Scripting, Secure development, Service operations and resiliency, Software Design and Development {+ 7 more}
        Agility core practices, Agility core practices, API and platform design, Cloud Platforms, Collaboration, Communication, Configuration management and release, Continuous deployment and release, Creating a high performing team, Database Design, Digital Project Management, Documentation and knowledge sharing, Emerging technology monitoring, Facilitation, Information Security, Mentoring, Metrics definition and instrumentation, NoSql data modelling, Problem Solving, Relational Data Modelling, Risk Management, Scripting, Secure development, Service operations and resiliency, Software Design and Development {+ 7 more}
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        Define and deliver the roadmap for horizontal platform capabilities serving all private markets asset classes including core data services, cross-fund analytics, workflow automation, and API infrastructure. * Familiarity with data architecture concepts: data modeling, ETL pipelines, API design, and event-driven systems. * Experience with API-first product design and developer experience (DX) programs.
        Define and deliver the roadmap for horizontal platform capabilities serving all private markets asset classes including core data services, cross-fund analytics, workflow automation, and API infrastructure. * Familiarity with data architecture concepts: data modeling, ETL pipelines, API design, and event-driven systems. * Experience with API-first product design and developer experience (DX) programs.
        more
        Accountability for a portion of the ~150 site External Manufacturing (EM) network, which covers Medicines and Vaccines Large Molecule Drug Substance and Drug Product, Medicine Small Molecule API and secondary, including newer product types such as Antibody Drug Conjugates and Oligonucleotides. * Engineering experience in small molecule primary and secondary, including API (Active Pharmaceutical Ingredient) /high toxicity API manufacture.
        Accountability for a portion of the ~150 site External Manufacturing (EM) network, which covers Medicines and Vaccines Large Molecule Drug Substance and Drug Product, Medicine Small Molecule API and secondary, including newer product types such as Antibody Drug Conjugates and Oligonucleotides. * Engineering experience in small molecule primary and secondary, including API (Active Pharmaceutical Ingredient) /high toxicity API manufacture.
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        Deliver Value-Based Technical Messaging: Fluent in both 'API' and 'ROI,' you will translate working prototypes into solid business cases. * Strong Data Engineering Skills & Builder Credibility: Experience working with SQL, Python and building data pipelines and API integrations.
        Deliver Value-Based Technical Messaging: Fluent in both 'API' and 'ROI,' you will translate working prototypes into solid business cases. * Strong Data Engineering Skills & Builder Credibility: Experience working with SQL, Python and building data pipelines and API integrations.
        more
        LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.
        LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.
        more
        NEW
        Job Description - Meet The Team - As a member of Talos, you will support cutting-edge detection and mitigation technologies. You will work towards keeping yourself abreast of the latest industry threat creation and defense techniques, and you will develop proof-of-concept solutions, provide domain expertise, and guide implementation to facilitate a successful security posture in Ciscos products. If you enjoy vulnerability research, crash analysis, reverse engineering, and researching new techniques and writing tools to automate these tasks, this job is for you! Your Impact - Essential Duties and Responsibilities * Conduct security research, including the development of tools for vulnerability analysis and mitigation. * Develop static and run-time analysis tools to identify root causes and input conditions related to vulnerabilities.
        Job Description - Meet The Team - As a member of Talos, you will support cutting-edge detection and mitigation technologies. You will work towards keeping yourself abreast of the latest industry threat creation and defense techniques, and you will develop proof-of-concept solutions, provide domain expertise, and guide implementation to facilitate a successful security posture in Ciscos products. If you enjoy vulnerability research, crash analysis, reverse engineering, and researching new techniques and writing tools to automate these tasks, this job is for you! Your Impact - Essential Duties and Responsibilities * Conduct security research, including the development of tools for vulnerability analysis and mitigation. * Develop static and run-time analysis tools to identify root causes and input conditions related to vulnerabilities.
        more
        NEW
        Implementation and delivery of new server-side components, microservices, Web APIs, and enhancements to the BestX product. * Exhibiting superior skills across modern Agile engineering, cloud-native architectures, server-side development, and database design. * Developing a strong understanding of Transaction Cost Analysis (TCA) and the key benchmarks required for MiFID II / MiFIR. * Maintaining and enhancing core applications while influencing and shaping technology and architectural decisions. * Taking full ownership of tasks and seeing them through to completion with a strong sense of accountability and quality. * Establishing and enforcing best practices, including clean code, robust design patterns, and maintainable system architectures. * Acting as a catalyst for change, driving continuous improvement and modernisation across the engineering organisation.
        Implementation and delivery of new server-side components, microservices, Web APIs, and enhancements to the BestX product. * Exhibiting superior skills across modern Agile engineering, cloud-native architectures, server-side development, and database design. * Developing a strong understanding of Transaction Cost Analysis (TCA) and the key benchmarks required for MiFID II / MiFIR. * Maintaining and enhancing core applications while influencing and shaping technology and architectural decisions. * Taking full ownership of tasks and seeing them through to completion with a strong sense of accountability and quality. * Establishing and enforcing best practices, including clean code, robust design patterns, and maintainable system architectures. * Acting as a catalyst for change, driving continuous improvement and modernisation across the engineering organisation.
        more
        At Moody's, we unite the brightest minds to turn todays risks into tomorrows opportunities. We do this by striving to create an inclusive environment where everyone feels welcome to be who they arewith the freedom to exchange ideas, think innovatively, and listen to each other and customers in meaningful ways. Moodys is transforming how the world sees risk. As a global leader in ratings and integrated risk assessment, were advancing AI to move from insight to actionenabling intelligence that not only understands complexity but responds to it. We decode risk to unlock opportunity, helping our clients navigate uncertainty with clarity, speed, and confidence. If you are excited about this opportunity but do not meet every single requirement, please apply! You still may be a great fit for this role or other open roles.
        At Moody's, we unite the brightest minds to turn todays risks into tomorrows opportunities. We do this by striving to create an inclusive environment where everyone feels welcome to be who they arewith the freedom to exchange ideas, think innovatively, and listen to each other and customers in meaningful ways. Moodys is transforming how the world sees risk. As a global leader in ratings and integrated risk assessment, were advancing AI to move from insight to actionenabling intelligence that not only understands complexity but responds to it. We decode risk to unlock opportunity, helping our clients navigate uncertainty with clarity, speed, and confidence. If you are excited about this opportunity but do not meet every single requirement, please apply! You still may be a great fit for this role or other open roles.
        more
        Senior Software Engineer, AI - Location: London (Hybrid: 2 days in office, 3 days remote) Position Type: Permanent - Are you a seasoned software engineer passionate about pushing the boundaries of what's possible with Generative AI? We are a leading global provider of financial information services, insights, data, and analytics. We are currently seeking a Senior Software Engineer, AI to join our team in London. In this role, you will drive high-impact AI initiatives, design production-ready generative AI platforms, and build scalable, enterprise-grade solutions that shape the future of global markets. What We Offer * Transformative AI Impact: Design and deploy production-ready GenAI platforms, multi-agent systems, and intelligent automation that reshape products in real-time. * Cutting-Edge Tech Stack: Experiment with the latest LLMs, architect RAG implementations, design ...
        Senior Software Engineer, AI - Location: London (Hybrid: 2 days in office, 3 days remote) Position Type: Permanent - Are you a seasoned software engineer passionate about pushing the boundaries of what's possible with Generative AI? We are a leading global provider of financial information services, insights, data, and analytics. We are currently seeking a Senior Software Engineer, AI to join our team in London. In this role, you will drive high-impact AI initiatives, design production-ready generative AI platforms, and build scalable, enterprise-grade solutions that shape the future of global markets. What We Offer * Transformative AI Impact: Design and deploy production-ready GenAI platforms, multi-agent systems, and intelligent automation that reshape products in real-time. * Cutting-Edge Tech Stack: Experiment with the latest LLMs, architect RAG implementations, design ...
        more
        FEATURED
        Help Shape the Future of AI at ECA International - What if you could help build the AI-native future of a global business? At ECA International, we're already using AI across software development, data ingestion and delivery, with the governance and guardrails in place to support it safely within an enterprise environment. Now we're looking for an Engineering Tech Lead Data & AI to help us scale that capability further. You'll help evolve our existing data platform, built on AWS, Snowflake, S3, Postgres and event-driven services, into an AI-ready foundation that supports new Data Production and Data Discovery experiences across the business. This is an opportunity to work at the intersection of data, engineering and AI, helping to build practical solutions that create real value for both our teams and our clients.
        Help Shape the Future of AI at ECA International - What if you could help build the AI-native future of a global business? At ECA International, we're already using AI across software development, data ingestion and delivery, with the governance and guardrails in place to support it safely within an enterprise environment. Now we're looking for an Engineering Tech Lead Data & AI to help us scale that capability further. You'll help evolve our existing data platform, built on AWS, Snowflake, S3, Postgres and event-driven services, into an AI-ready foundation that supports new Data Production and Data Discovery experiences across the business. This is an opportunity to work at the intersection of data, engineering and AI, helping to build practical solutions that create real value for both our teams and our clients.
        more
        FEATURED

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        Frequently Asked Questions

        How many permanent API jobs are there in Hatfield?
        There are 9 permanent API jobs within 20 miles of Hatfield available on JustEngineers right now.

        What other similar jobs are there to permanent API jobs in Hatfield?
        As well as permanent API jobs in Hatfield, you can find permanent Engineering, Management, Software Development, amongst many others.