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        281 Contract API jobs in London + 20 miles

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        Engineering Delivery Manager

        Bango
        Cambridge, Cambridgeshire
        Competitive
        Bango enables content providers to reach more paying customers through global partnerships. Today, the Digital Vending Machine is driving the rapid growth of the subscriptions economy, powering choice and control for subscribers. The worlds largest content providers, including Amazon, Google and Microsoft trust Bango technology to reach subscribers everywhere. Bango, where people subscribe. Role - At Bango, the Engineering Delivery Manager (EDM) owns the delivery outcomes for one or more engineering teams ensuring that priorities, plans, and progress are clear, credible, and delivered as committed. This includes building and sustaining highperforming teams, aligning work with business priorities, and maintaining a consistent, trusted delivery narrative across the organisation. The EDM is accountable for engineering deliverables, working in close partnership with Tech
        Bango enables content providers to reach more paying customers through global partnerships. Today, the Digital Vending Machine is driving the rapid growth of the subscriptions economy, powering choice and control for subscribers. The worlds largest content providers, including Amazon, Google and Microsoft trust Bango technology to reach subscribers everywhere. Bango, where people subscribe. Role - At Bango, the Engineering Delivery Manager (EDM) owns the delivery outcomes for one or more engineering teams ensuring that priorities, plans, and progress are clear, credible, and delivered as committed. This includes building and sustaining highperforming teams, aligning work with business priorities, and maintaining a consistent, trusted delivery narrative across the organisation. The EDM is accountable for engineering deliverables, working in close partnership with Tech
        more
        Be our senior technical expert and role model within our engineering team. Lead on architectural input, help shape the direction but be close enough to provide hands-on development, raising standards through mentoring, innovation and leading on technical excellence. You will support the growth and development of the team, guiding them in applying modern engineering practices including TDD, CI/CD and code quality gates. Lead in complex technical design, contribute to technical roadmaps, POCs and solution proposals, whilst developing and maintaining high quality, secure and scalable software. Promote collaboration and accountability, working with Product, QA and Devops in an Agile environment. You will likely be a Salesforce Certified Administrator (ADM201) and Salesforce Platform I Developer (Platform Developer II desirable) with 23+ years of hands-on experience with A
        Be our senior technical expert and role model within our engineering team. Lead on architectural input, help shape the direction but be close enough to provide hands-on development, raising standards through mentoring, innovation and leading on technical excellence. You will support the growth and development of the team, guiding them in applying modern engineering practices including TDD, CI/CD and code quality gates. Lead in complex technical design, contribute to technical roadmaps, POCs and solution proposals, whilst developing and maintaining high quality, secure and scalable software. Promote collaboration and accountability, working with Product, QA and Devops in an Agile environment. You will likely be a Salesforce Certified Administrator (ADM201) and Salesforce Platform I Developer (Platform Developer II desirable) with 23+ years of hands-on experience with A
        more
        Make a difference and set the Salesforce Software Engineering bar through coaching, code quality and continuous improvement initiatives. Get the satisfaction of seeing your approach being embedded and showing others in the team the way, watch them benefit and thrive from your mentoring. We are transforming our Salesforce product, and you will likely be a Salesforce Certified Administrator (ADM201) and Salesforce Platform I Developer with 23+ years of hands-on experience with Apex, SOQL/SOSL, Lightning Web Components (LWC), and Aura Components, with experience building and maintaining custom objects, triggers, batch jobs, asynchronous processing, and declarative automation. * Salesforce Platform App Builder * Salesforce Platform Developer II * Salesforce CPQ Specialist / CPQ Developer * OmniStudio Developer (formerly Vlocity Developer)
        Make a difference and set the Salesforce Software Engineering bar through coaching, code quality and continuous improvement initiatives. Get the satisfaction of seeing your approach being embedded and showing others in the team the way, watch them benefit and thrive from your mentoring. We are transforming our Salesforce product, and you will likely be a Salesforce Certified Administrator (ADM201) and Salesforce Platform I Developer with 23+ years of hands-on experience with Apex, SOQL/SOSL, Lightning Web Components (LWC), and Aura Components, with experience building and maintaining custom objects, triggers, batch jobs, asynchronous processing, and declarative automation. * Salesforce Platform App Builder * Salesforce Platform Developer II * Salesforce CPQ Specialist / CPQ Developer * OmniStudio Developer (formerly Vlocity Developer)
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        A role that provides a foundation for growth into more senior technical leadership roles. The Software Engineer is a hands-on contributor responsible for delivering secure, maintainable, and performant software as part of a cross-functional Agile team. Working closely with Product, QA, DevOps, and fellow engineers, this role helps shape technical solutions, contributes to quality practices, and continuously builds their own technical capabilities. We are transforming our Salesforce product, and you will likely be a Salesforce Certified Administrator (ADM201) and Salesforce Platform I Developer with 23+ years of hands-on experience with Apex, SOQL/SOSL, Lightning Web Components (LWC), and Aura Components, with experience building and maintaining custom objects, triggers, batch jobs, asynchronous processing, and declarative automation. * Salesforce Platform App Builder
        A role that provides a foundation for growth into more senior technical leadership roles. The Software Engineer is a hands-on contributor responsible for delivering secure, maintainable, and performant software as part of a cross-functional Agile team. Working closely with Product, QA, DevOps, and fellow engineers, this role helps shape technical solutions, contributes to quality practices, and continuously builds their own technical capabilities. We are transforming our Salesforce product, and you will likely be a Salesforce Certified Administrator (ADM201) and Salesforce Platform I Developer with 23+ years of hands-on experience with Apex, SOQL/SOSL, Lightning Web Components (LWC), and Aura Components, with experience building and maintaining custom objects, triggers, batch jobs, asynchronous processing, and declarative automation. * Salesforce Platform App Builder
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        We are looking for a talented and adaptable DevOps Software Engineer with strong expertise in Python and Amazon Web Services (AWS). This role is ideal for candidates who are passionate about both application development and cloud infrastructure, and who enjoys building scalable, secure, and high-performance systems. You will play a key role in designing, developing, deploying, and maintaining cloud-native applications and infrastructure. Additionally, you will collaborate with the Network Operations Team to support and enhance network automation initiatives. This includes developing tools and scripts to automate network provisioning, configuration, and monitoring, helping to drive efficiency, consistency, and reliability across our hybrid cloud environment. Software Engineering (Python) * Design and develop backend services, APIs, and automation tools using Python (Fl
        We are looking for a talented and adaptable DevOps Software Engineer with strong expertise in Python and Amazon Web Services (AWS). This role is ideal for candidates who are passionate about both application development and cloud infrastructure, and who enjoys building scalable, secure, and high-performance systems. You will play a key role in designing, developing, deploying, and maintaining cloud-native applications and infrastructure. Additionally, you will collaborate with the Network Operations Team to support and enhance network automation initiatives. This includes developing tools and scripts to automate network provisioning, configuration, and monitoring, helping to drive efficiency, consistency, and reliability across our hybrid cloud environment. Software Engineering (Python) * Design and develop backend services, APIs, and automation tools using Python (Fl
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        About Unily - Unily partners with the worlds largest and most complex enterprises to power Organizational Velocity through digital Employee Experience transformation. Iconic brands, including Estée Lauder Companies, CVS Health, and British Airways, use Unilys market-leading Employee Experience platform to improve productivity, streamline communication, and foster a highly connected workplace. Unily is the only triple leader recognized by all three of the major analysts. Unily is recognized as a Leader in the 2024 Gartner Magic Quadrant for Intranet Packaged Solutions, the 2024 Forrester Wave: Intranet Platforms, and the IDC MarketScape: Worldwide Experience-Centric Intelligent Digital Workspaces 2024. With these accolades, we continue to grow and expand our employee community with people who are passionate about joining us on this exciting journey. Job Purpose
        About Unily - Unily partners with the worlds largest and most complex enterprises to power Organizational Velocity through digital Employee Experience transformation. Iconic brands, including Estée Lauder Companies, CVS Health, and British Airways, use Unilys market-leading Employee Experience platform to improve productivity, streamline communication, and foster a highly connected workplace. Unily is the only triple leader recognized by all three of the major analysts. Unily is recognized as a Leader in the 2024 Gartner Magic Quadrant for Intranet Packaged Solutions, the 2024 Forrester Wave: Intranet Platforms, and the IDC MarketScape: Worldwide Experience-Centric Intelligent Digital Workspaces 2024. With these accolades, we continue to grow and expand our employee community with people who are passionate about joining us on this exciting journey. Job Purpose
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        Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But we're more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 14 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks , we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA , and we have an insatiable hunger to 'wow'! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
        Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But we're more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 14 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks , we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA , and we have an insatiable hunger to 'wow'! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
        more

        Automation Software Engineer

        CELLULAR ORIGINS LIMITED
        Cambridge, Cambridgeshire
        Competitive
        Company Description - Cell therapies have been shown to cure devastating and previously untreatable diseases like cancer by re-programming the patient's own immune system. Giving more patients access to these life-saving therapies requires a revolution in manufacturing and process automation. Cellular Origins, a TTP Company, is enabling scalable, cost-effective and efficient manufacture of cell and gene therapies. Our technology addresses the challenges associated with manufacturing at scale with an elegant robotic manufacturing automation solution that reduces cost and labour, eliminates human error, and increases efficiency. Job Description - You will design and implement PLC control systems using Beckhoff TwinCAT. You will be responsible for delivering PLC systems that integrate with Cellular Origins' factory software architecture to allow remote control of machine
        Company Description - Cell therapies have been shown to cure devastating and previously untreatable diseases like cancer by re-programming the patient's own immune system. Giving more patients access to these life-saving therapies requires a revolution in manufacturing and process automation. Cellular Origins, a TTP Company, is enabling scalable, cost-effective and efficient manufacture of cell and gene therapies. Our technology addresses the challenges associated with manufacturing at scale with an elegant robotic manufacturing automation solution that reduces cost and labour, eliminates human error, and increases efficiency. Job Description - You will design and implement PLC control systems using Beckhoff TwinCAT. You will be responsible for delivering PLC systems that integrate with Cellular Origins' factory software architecture to allow remote control of machine
        more
        AI Engineer, Software Engineer, Machine Learning Engineer, LLM, GenAI, Agentic, LangChain, LangGraph, Langfuse, Python, Backend, API, MLflow, W&B, DVC, Evaluation, RAG, Retrieval, Semantic Search, Multimodal, Computer Vision, Speech-to-Text, Cloud, AWS, Azure, Model Deployment, UK Remote, Contractor, EdTech, Assessment Systems, Automated Scoring, Git, GitHub, UK Hours
        AI Engineer, Software Engineer, Machine Learning Engineer, LLM, GenAI, Agentic, LangChain, LangGraph, Langfuse, Python, Backend, API, MLflow, W&B, DVC, Evaluation, RAG, Retrieval, Semantic Search, Multimodal, Computer Vision, Speech-to-Text, Cloud, AWS, Azure, Model Deployment, UK Remote, Contractor, EdTech, Assessment Systems, Automated Scoring, Git, GitHub, UK Hours
        more
        NEW
        You will work across a wide portfolio of systems and services to enable reliable data movement, API-based integration, and modern cloud-driven workflows.
        You will work across a wide portfolio of systems and services to enable reliable data movement, API-based integration, and modern cloud-driven workflows.
        more
        FEATURED
        • Strong backend engineering background delivering high-scale systems with AI components (Python/Java, RAG frameworks, vector databases, API engineering).
        • Strong backend engineering background delivering high-scale systems with AI components (Python/Java, RAG frameworks, vector databases, API engineering).
        more
        We are looking for a highly skilled Lead Business Analyst / Product Owner to lead the design, development, and delivery of API solutions that enable seamless integration across our digital ecosystem. This hybrid role combines strategic product ownership with hands-on business analysis to ensure our API platform meets business needs, enhances interoperability, and supports scalable growth. * Define and own the API product backlog, aligning with business objectives and technology strategy. * Act as the voice of the customer for API consumers, ensuring usability and developer experience. * Gather, analyze, and document functional and non-functional requirements for API development. * Collaborate with architects and engineering teams to design API specifications, JSON, XM
        We are looking for a highly skilled Lead Business Analyst / Product Owner to lead the design, development, and delivery of API solutions that enable seamless integration across our digital ecosystem. This hybrid role combines strategic product ownership with hands-on business analysis to ensure our API platform meets business needs, enhances interoperability, and supports scalable growth. * Define and own the API product backlog, aligning with business objectives and technology strategy. * Act as the voice of the customer for API consumers, ensuring usability and developer experience. * Gather, analyze, and document functional and non-functional requirements for API development. * Collaborate with architects and engineering teams to design API specifications, JSON, XM
        more
        PREMIUM
        My client are seeking a JavaDeveloper with strong expertise in Apache Kafka, Node.js, and AWS cloud services. The role involves designing and implementing scalable, event-driven architectures, building microservices, and deploying solutions in a cloud-native environment. Essential Skills & Experience * Strong commercial experience with Java (core + modern frameworks) * Hands-on experience with Node.js * Proven background delivering solutions in AWS environments * Understanding of microservices, APIs and distributed systems * Experience working in Agile / DevOps environments * Familiarity with CI/CD pipelines and cloud-native tooling * Experience with Kafka Desirable * Previous experience working in public-sector or secure environments
        My client are seeking a JavaDeveloper with strong expertise in Apache Kafka, Node.js, and AWS cloud services. The role involves designing and implementing scalable, event-driven architectures, building microservices, and deploying solutions in a cloud-native environment. Essential Skills & Experience * Strong commercial experience with Java (core + modern frameworks) * Hands-on experience with Node.js * Proven background delivering solutions in AWS environments * Understanding of microservices, APIs and distributed systems * Experience working in Agile / DevOps environments * Familiarity with CI/CD pipelines and cloud-native tooling * Experience with Kafka Desirable * Previous experience working in public-sector or secure environments
        more
        Looking for a Technical Business Analyst to support squads across a high-profile digital environment. You'll work closely with technical and business teams, shaping requirements and supporting delivery from discovery through to live service. The role requires someone confident engaging directly with technical and business stakeholders, translating business needs into technical requirements, and supporting squads through the full lifecycle. * Gather and refine requirements with stakeholders * Translate discovery outputs into clear epics and user stories * Work with architects and developers to validate technical feasibility * Understand RESTful APIs, data flows, and integration patterns * Contribute to agile ceremonies and support iterative delivery * Work across legacy and modern service environments * Proven experience as a Technical BA within digital or engineering
        Looking for a Technical Business Analyst to support squads across a high-profile digital environment. You'll work closely with technical and business teams, shaping requirements and supporting delivery from discovery through to live service. The role requires someone confident engaging directly with technical and business stakeholders, translating business needs into technical requirements, and supporting squads through the full lifecycle. * Gather and refine requirements with stakeholders * Translate discovery outputs into clear epics and user stories * Work with architects and developers to validate technical feasibility * Understand RESTful APIs, data flows, and integration patterns * Contribute to agile ceremonies and support iterative delivery * Work across legacy and modern service environments * Proven experience as a Technical BA within digital or engineering
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        Job Title: Product Security Architect (Contract) Location: UK-based / Remote - Contract: 3 months initially, Outside IR35 - Why Apply? This is an opportunity to play a key role in shaping Product Security for an international technology organisation. The role offers exposure to a federated environment across multiple business units, providing strategic influence and hands on technical impact. * Define, lead, and evolve a group-wide Product Security and Secure SSDLC strategy across all business units. * Assess current AppSec capabilities, identify gaps, and implement practical, scalable improvements. * Collaborate with Product Architects, engineering, and security teams to integrate security into GitHub, CI/CD pipelines, and development workflows. * Provide architecture guidance and implement secure coding practices, threat modelling, and security tooling.
        Job Title: Product Security Architect (Contract) Location: UK-based / Remote - Contract: 3 months initially, Outside IR35 - Why Apply? This is an opportunity to play a key role in shaping Product Security for an international technology organisation. The role offers exposure to a federated environment across multiple business units, providing strategic influence and hands on technical impact. * Define, lead, and evolve a group-wide Product Security and Secure SSDLC strategy across all business units. * Assess current AppSec capabilities, identify gaps, and implement practical, scalable improvements. * Collaborate with Product Architects, engineering, and security teams to integrate security into GitHub, CI/CD pipelines, and development workflows. * Provide architecture guidance and implement secure coding practices, threat modelling, and security tooling.
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        Role Overview - We are seeking an experienced Scala Developer to join a dynamic team working on high-impact projects. The ideal candidate will have strong expertise in Scala and Play Framework, with a passion for building robust, scalable backend services and APIs. This is a fully remote contract role with an immediate start. Key Responsibilities * Design, develop, and maintain backend services and APIs using Scala and Play Framework. * Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. * Write clean, idiomatic Scala code and apply functional programming principles where appropriate. * Develop and maintain automated tests (unit and integration) and support test automation initiatives. * Collaborate with product owners, UX designers, QA, and other engineers in an Agile environment (Scrum/Kanban).
        Role Overview - We are seeking an experienced Scala Developer to join a dynamic team working on high-impact projects. The ideal candidate will have strong expertise in Scala and Play Framework, with a passion for building robust, scalable backend services and APIs. This is a fully remote contract role with an immediate start. Key Responsibilities * Design, develop, and maintain backend services and APIs using Scala and Play Framework. * Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. * Write clean, idiomatic Scala code and apply functional programming principles where appropriate. * Develop and maintain automated tests (unit and integration) and support test automation initiatives. * Collaborate with product owners, UX designers, QA, and other engineers in an Agile environment (Scrum/Kanban).
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        The ideal candidate will have strong experience in API development, microservices architecture, CI/CD pipelines, and containerization. Additional Skills: API development, microservices, CI/CD pipelines, containerization (Docker/Kubernetes), Leadership, Greenfield development experience
        The ideal candidate will have strong experience in API development, microservices architecture, CI/CD pipelines, and containerization. Additional Skills: API development, microservices, CI/CD pipelines, containerization (Docker/Kubernetes), Leadership, Greenfield development experience
        more

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        What is the average salary for API in London?

        Average salary per year
        £72,499

        The average salary for a API in London is £72,499. API in London salaries range from £62,499 to £87,499.

        Frequently Asked Questions

        How many contract API jobs are there in London?
        There are 281 contract API jobs within 20 miles of London available on CWJobs right now.

        Where in London are these contract jobs?
        You can find contract jobs in City of London, Central London, West End.

        What other similar jobs are there to contract API jobs in London?
        As well as contract API jobs in London, you can find contract Qa Automation, Quality Assurance, QA Analyst, amongst many others.