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        39 API jobs in London + 30 miles

        Application Engineer II

        GlaxoSmithKline
        London
        Competitive
        API development using technologies and standards like REST/GraphQL/gRPC or similar.
        API development using technologies and standards like REST/GraphQL/gRPC or similar.
        Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
        Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
        more
        Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
        Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
        more
        The Onyx Research Data Tech organization represents a major investment by GSK R&D and Digital & Tech, designed to deliver a step-change in our ability to leverage data, knowledge, and prediction to find new medicines. * Building a next-generation data experience for GSKs scientists, engineers, and decision-makers, increasing productivity and reducing time spent on data mechanics * Providing best-in-class AI/ML and data analysis environments to accelerate our predictive capabilities and attract top-tier talent * Aggressively engineering our data at scale to unlock the value of our combined data assets * Implementing scientific technology products that leverage the data and capabilities provisioned by Onyx - As a Staff Application Engineer (Individual Contributor), you are a highly experienced technical leader who delivers high-impact engineering outcomes across multipl
        The Onyx Research Data Tech organization represents a major investment by GSK R&D and Digital & Tech, designed to deliver a step-change in our ability to leverage data, knowledge, and prediction to find new medicines. * Building a next-generation data experience for GSKs scientists, engineers, and decision-makers, increasing productivity and reducing time spent on data mechanics * Providing best-in-class AI/ML and data analysis environments to accelerate our predictive capabilities and attract top-tier talent * Aggressively engineering our data at scale to unlock the value of our combined data assets * Implementing scientific technology products that leverage the data and capabilities provisioned by Onyx - As a Staff Application Engineer (Individual Contributor), you are a highly experienced technical leader who delivers high-impact engineering outcomes across multipl
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        Why Faculty? We established Faculty in 2014 because we thought that AI would be the most important technology of our time. Since then, weve worked with over 350 global customers to transform their performance through human-centric AI. You can read about our real-world impact here. We dont chase hype cycles. We innovate, build and deploy responsible AI which moves the needle - and we know a thing or two about doing it well. We bring an unparalleled depth of technical, product and delivery expertise to our clients who span government, finance, retail, energy, life sciences and defence. Our business, and reputation, is growing fast and were always on the lookout for individuals who share our intellectual curiosity and desire to build a positive legacy through technology. AI is an epoch-defining technology, join a company where youll be empowered to envision its most powe
        Why Faculty? We established Faculty in 2014 because we thought that AI would be the most important technology of our time. Since then, weve worked with over 350 global customers to transform their performance through human-centric AI. You can read about our real-world impact here. We dont chase hype cycles. We innovate, build and deploy responsible AI which moves the needle - and we know a thing or two about doing it well. We bring an unparalleled depth of technical, product and delivery expertise to our clients who span government, finance, retail, energy, life sciences and defence. Our business, and reputation, is growing fast and were always on the lookout for individuals who share our intellectual curiosity and desire to build a positive legacy through technology. AI is an epoch-defining technology, join a company where youll be empowered to envision its most powe
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        Job Description - Verisks Summer Internship Program is designed to provide you with real work experience, professional development, and networking opportunities. This is a full-time (35 hours/ week) paid internship program spanning ten weeks from mid-June through end of August 2026. Participation in the internship program requires that you are located near London office as the program is a hybrid work schedule, requiring you to be in the office at least 2 days per week. As an Integration Analyst Intern, youll work closely with product owners, customer integration leads, and other integration analysts to support data-driven initiatives. Youll gain hands-on experience collecting and processing data through APIs, visualizing insights, and contributing to the development of scalable data solutions in the insurance domain. We want to get to know YOU.
        Job Description - Verisks Summer Internship Program is designed to provide you with real work experience, professional development, and networking opportunities. This is a full-time (35 hours/ week) paid internship program spanning ten weeks from mid-June through end of August 2026. Participation in the internship program requires that you are located near London office as the program is a hybrid work schedule, requiring you to be in the office at least 2 days per week. As an Integration Analyst Intern, youll work closely with product owners, customer integration leads, and other integration analysts to support data-driven initiatives. Youll gain hands-on experience collecting and processing data through APIs, visualizing insights, and contributing to the development of scalable data solutions in the insurance domain. We want to get to know YOU.
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        Role Summary - LSEGs ambition is to be one of the worlds greatest companies and best places to work. To achieve this, we are on a journey of building a world class engineering function supporting our Customer Data Master (CDM) Platform team. The team has embarked on a journey to provide internal teams and platform teams with a fully managed customer data master platform. The role will take part in the definition of the CDM strategy and execution of the CDM engineering strategy and deliver the technology capability, in line with the Corporate Engineering (CE) strategy which includes evolving our current master data capability. What youll be doing * Lead and scale a senior engineering team (currently 5, growing to ~10) to design, build and operate the MDM , CDM and Customer 360 platforms as a product, with clear ownership, measurable outcomes, and a roadmap aligned to b
        Role Summary - LSEGs ambition is to be one of the worlds greatest companies and best places to work. To achieve this, we are on a journey of building a world class engineering function supporting our Customer Data Master (CDM) Platform team. The team has embarked on a journey to provide internal teams and platform teams with a fully managed customer data master platform. The role will take part in the definition of the CDM strategy and execution of the CDM engineering strategy and deliver the technology capability, in line with the Corporate Engineering (CE) strategy which includes evolving our current master data capability. What youll be doing * Lead and scale a senior engineering team (currently 5, growing to ~10) to design, build and operate the MDM , CDM and Customer 360 platforms as a product, with clear ownership, measurable outcomes, and a roadmap aligned to b
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        ££60,000 - £110,000 GBP + Package - Hybrid WORKING - Location: London;Cheltenham;Bournemouth, Central London, Greater London - United Kingdom Type: Permanent - Location: Cheltenham, London, Bournemouth - Consultative travel required - Clearance: Must be a sole British National, elligable or holding SC or DV - Salary: £60,000 - £110,000 (Depandant on grade) A leading digital consultancy is looking for a Senior Data Scientist to lead and deliver cutting-edge AI/ML solutions for clients across UK defence and public sector. This is a hands-on, strategic position for someone who thrives at the intersection of data science, client delivery, and software product design. What You'll Be Doing * Lead technical project delivery and shape data science strategy across multiple client engagements * Define and implement bespoke machine learning algorithms to solve real-world defence
        ££60,000 - £110,000 GBP + Package - Hybrid WORKING - Location: London;Cheltenham;Bournemouth, Central London, Greater London - United Kingdom Type: Permanent - Location: Cheltenham, London, Bournemouth - Consultative travel required - Clearance: Must be a sole British National, elligable or holding SC or DV - Salary: £60,000 - £110,000 (Depandant on grade) A leading digital consultancy is looking for a Senior Data Scientist to lead and deliver cutting-edge AI/ML solutions for clients across UK defence and public sector. This is a hands-on, strategic position for someone who thrives at the intersection of data science, client delivery, and software product design. What You'll Be Doing * Lead technical project delivery and shape data science strategy across multiple client engagements * Define and implement bespoke machine learning algorithms to solve real-world defence
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        PREMIUM

        Data Scientist (Football Club)

        Singular Recruitment
        Central London (W1)
        From £50,000 to £70,000 per annum
        Data Scientist(one day a week in the central London office) Sports Analytics - This role is a unique opportunity for aData Scientistto combine technical challenges with creativity in a collaborative, high-standard work environment. By joining this team, youll not only be part of a creative and open work culture focused on innovation and excellence but also have the chance to work with and collaborate with some of the most well-known footballers in the industry. This position offers significant opportunities for professional growth within sports analytics and the potential to impact sports performance through advanced technology, making it an ideal setting for those passionate about leveraging cutting-edge technology to make meaningful contributions in the world of sports analytics. * Collect, clean, and process football-related data from various sources.
        Data Scientist(one day a week in the central London office) Sports Analytics - This role is a unique opportunity for aData Scientistto combine technical challenges with creativity in a collaborative, high-standard work environment. By joining this team, youll not only be part of a creative and open work culture focused on innovation and excellence but also have the chance to work with and collaborate with some of the most well-known footballers in the industry. This position offers significant opportunities for professional growth within sports analytics and the potential to impact sports performance through advanced technology, making it an ideal setting for those passionate about leveraging cutting-edge technology to make meaningful contributions in the world of sports analytics. * Collect, clean, and process football-related data from various sources.
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        FEATURED
        The Hoddesdon site has state-of-the-art Good Manufacturing Practice (GMP) standard facilities for the development of Active Pharmaceutical Ingredients (API), Formulation Development (FD) and Process Chemistry (PC).
        The Hoddesdon site has state-of-the-art Good Manufacturing Practice (GMP) standard facilities for the development of Active Pharmaceutical Ingredients (API), Formulation Development (FD) and Process Chemistry (PC).
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        You possess deep domain knowledge in language models and generative AI model architectures, including fine-tuning techniques beyond API-level implementation.
        You possess deep domain knowledge in language models and generative AI model architectures, including fine-tuning techniques beyond API-level implementation.
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        Deep technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale advanced AI/ML applications.
        Deep technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale advanced AI/ML applications.
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        As a Senior Implementation Engineer, you will lead enterprise customers through complex integrations with Yapilys API, combining strategic guidance with deep technical execution. You will collaborate closely with Customer Success, Product, and Engineering to drive successful delivery, resolve technical challenges, and ensure ongoing customer success - ultimately becoming a subject matter expert in the Yapily API and its enterprise capabilities. * Experience with API integration and implementation of SaaS solutions * Proven experience writing and maintaining code, with hands-on programming skills relevant to API integration * Collaborating in various additional projects such as maintaining our API documentation * Able to write, review, and debug code as part of end-to-end API integration * Familiarity with back-end development practices, API-driven architectures, and e
        As a Senior Implementation Engineer, you will lead enterprise customers through complex integrations with Yapilys API, combining strategic guidance with deep technical execution. You will collaborate closely with Customer Success, Product, and Engineering to drive successful delivery, resolve technical challenges, and ensure ongoing customer success - ultimately becoming a subject matter expert in the Yapily API and its enterprise capabilities. * Experience with API integration and implementation of SaaS solutions * Proven experience writing and maintaining code, with hands-on programming skills relevant to API integration * Collaborating in various additional projects such as maintaining our API documentation * Able to write, review, and debug code as part of end-to-end API integration * Familiarity with back-end development practices, API-driven architectures, and e
        more
        You will leverage your deep technical knowledge to build AI applications, intelligent agents, and API-based solutions, creating proof of concepts and transitioning these prototypes into scalable, cloud-based applications. Utilise your proficiency in Python (and relevant libraries such as OpenAI, LangChain, LlamaIndex, Pandas, NumPy) to design, develop, and deploy end-to-end AI systems, API integrations, and ETL/ELT pipelines in the cloud. * Strong understanding of LLM concepts, API orchestration, and agentic workflows, with a proven track record in designing, developing, and deploying AI solutions in Python. * Hands-on experience with data engineering tasks, including building ETL/ELT pipelines, containerisation (Docker), and API development and integration.
        You will leverage your deep technical knowledge to build AI applications, intelligent agents, and API-based solutions, creating proof of concepts and transitioning these prototypes into scalable, cloud-based applications. Utilise your proficiency in Python (and relevant libraries such as OpenAI, LangChain, LlamaIndex, Pandas, NumPy) to design, develop, and deploy end-to-end AI systems, API integrations, and ETL/ELT pipelines in the cloud. * Strong understanding of LLM concepts, API orchestration, and agentic workflows, with a proven track record in designing, developing, and deploying AI solutions in Python. * Hands-on experience with data engineering tasks, including building ETL/ELT pipelines, containerisation (Docker), and API development and integration.
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        Demonstrable track record of building and scaling large-scale, commercial B2B platforms , such as enterprise SaaS products, financial data platforms, or API-as-a-product businesses. * Expertise in cloud architecture (AWS/GCP), specifically with services related to API management (e.g., Kong, AWS API Gateway), identity and access management (IAM), and content delivery networks (CDNs).
        Demonstrable track record of building and scaling large-scale, commercial B2B platforms , such as enterprise SaaS products, financial data platforms, or API-as-a-product businesses. * Expertise in cloud architecture (AWS/GCP), specifically with services related to API management (e.g., Kong, AWS API Gateway), identity and access management (IAM), and content delivery networks (CDNs).
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        Senior Data Scientist II

        LEXISNEXIS RISK SOLUTIONS UK LIMITED T/a LexisNexis Risk Solutions Group
        London
        Competitive
        Are you ready to take your data science expertise to the next level and lead impactful projects? Would you enjoy working on advanced machine learning models and cutting-edge analytics solutions? We are a fast-moving, high-impact Data Science & AI team building real-world GenAI and ML solutions across the entire LexisNexis business. Our work powers smarter decisions for Product, Sales, Finance, Marketing, Customer Success, and Engineeringeverything from predictive models to enterprise GenAI apps to automation that transforms how teams operate. We are data science generalists who love variety. One day, it is designing a new GenAI workflow, the next it is deploying a model into Salesforce or engineering a pipeline in Databricks. We own our projects end-to-end and partner directly with stakeholders to deliver solutions that get used and make a measurable difference.
        Are you ready to take your data science expertise to the next level and lead impactful projects? Would you enjoy working on advanced machine learning models and cutting-edge analytics solutions? We are a fast-moving, high-impact Data Science & AI team building real-world GenAI and ML solutions across the entire LexisNexis business. Our work powers smarter decisions for Product, Sales, Finance, Marketing, Customer Success, and Engineeringeverything from predictive models to enterprise GenAI apps to automation that transforms how teams operate. We are data science generalists who love variety. One day, it is designing a new GenAI workflow, the next it is deploying a model into Salesforce or engineering a pipeline in Databricks. We own our projects end-to-end and partner directly with stakeholders to deliver solutions that get used and make a measurable difference.
        more
        Job Title - Job Description - So, who are we? Hello, we're IG Group. We are a publicly-traded FTSE250 FinTech company who run mobile, web and desktop platforms that help our clients trade stocks & shares, leveraged products, Futures & Options and Crypto. We are ambitious. Over 340,000 people already use our platforms. We're global with offices in 18 countries and products in 16 regions. We're hungry to move faster, ship better product for our customers and grow our user base. We believe in high autonomy, and we want people who are looking to do things differently in order to create better experiences for our customers. We work in cross-functional teams and are laser-focused on increasing the number of active clients we serve to drive sustainable growth. Your team - Are you passionate about delivering real value to an organisation using advanced techniques in data scie
        Job Title - Job Description - So, who are we? Hello, we're IG Group. We are a publicly-traded FTSE250 FinTech company who run mobile, web and desktop platforms that help our clients trade stocks & shares, leveraged products, Futures & Options and Crypto. We are ambitious. Over 340,000 people already use our platforms. We're global with offices in 18 countries and products in 16 regions. We're hungry to move faster, ship better product for our customers and grow our user base. We believe in high autonomy, and we want people who are looking to do things differently in order to create better experiences for our customers. We work in cross-functional teams and are laser-focused on increasing the number of active clients we serve to drive sustainable growth. Your team - Are you passionate about delivering real value to an organisation using advanced techniques in data scie
        more
        FactSet creates flexible, open data and software solutions for over 200,000 investment professionals worldwide, providing instant access to financial data and analytics that investors use to make crucial decisions. At FactSet, our values are the foundation of everything we do. They express how we act and operate , serve as a compass in our decision-making, and play a big role in how we treat each other, our clients, and our communities. We believe that the best ideas can come from anyone, anywhere, at any time, and that curiosity is the key to anticipating our clients needs and exceeding their expectations. Your Team's Impact - FactSets commitment to our clients, employees, shareholders, and communities is at the core of who we are. Our commitment to corporate citizenship is built into all aspects of our business.
        FactSet creates flexible, open data and software solutions for over 200,000 investment professionals worldwide, providing instant access to financial data and analytics that investors use to make crucial decisions. At FactSet, our values are the foundation of everything we do. They express how we act and operate , serve as a compass in our decision-making, and play a big role in how we treat each other, our clients, and our communities. We believe that the best ideas can come from anyone, anywhere, at any time, and that curiosity is the key to anticipating our clients needs and exceeding their expectations. Your Team's Impact - FactSets commitment to our clients, employees, shareholders, and communities is at the core of who we are. Our commitment to corporate citizenship is built into all aspects of our business.
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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 API jobs are there in London?
        There are 39 API jobs within 30 miles of London available on EmedCareers right now.

        Where in London are these jobs?
        You can find jobs in Uxbridge, Central London, West End.

        What other similar jobs are there to API jobs in London?
        As well as API jobs in London, you can find Science, Data Science, Management, amongst many others.

        How many temporary and part-time API jobs are available in London?
        There are 0 temporary API jobs and 1 part-time API jobs available in London at the moment.