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        57 Permanent API jobs in South East London + 20 miles

        206 exact matches jobs are outside your preferred location

        Senior Software EngineerNew

        Wikimedia Uk
        UK
        Competitive
        Our team owns the web API and other integration interfaces of MediaWiki, enabling other teams to create features that allows users to access, edit, and consume knowledge efficiently and reliably. * Contributing to the adoption and advocacy of API-first development, and influencing best practices in system design, SLOs/SLAs, and OpenAPI Specification;
        Our team owns the web API and other integration interfaces of MediaWiki, enabling other teams to create features that allows users to access, edit, and consume knowledge efficiently and reliably. * Contributing to the adoption and advocacy of API-first development, and influencing best practices in system design, SLOs/SLAs, and OpenAPI Specification;
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        Job Introduction - Job Title: Technical Business Analyst - Salary: £51,000 - 56,000 - Contract: Permanent - Location: Hybrid based in Warrington - Weekly Hours: 35 hours per week - So. What is this role exactly? This is an exciting opportunity for a Technical Business Analyst to join our Data & Business Intelligence team. We're continuing to evolve our data capabilities and governance frameworks-so it's a great time to be part of the journey. We're looking for someone who's passionate about data, thrives on technical analysis, and takes pride in delivering high-quality solutions that support business strategy and decision-making. What will my working week look like? You will be homebased, living within the North West, within a reasonable travelling distance of our Head Office in Warrington, to attend meetings and training courses when needed.
        Job Introduction - Job Title: Technical Business Analyst - Salary: £51,000 - 56,000 - Contract: Permanent - Location: Hybrid based in Warrington - Weekly Hours: 35 hours per week - So. What is this role exactly? This is an exciting opportunity for a Technical Business Analyst to join our Data & Business Intelligence team. We're continuing to evolve our data capabilities and governance frameworks-so it's a great time to be part of the journey. We're looking for someone who's passionate about data, thrives on technical analysis, and takes pride in delivering high-quality solutions that support business strategy and decision-making. What will my working week look like? You will be homebased, living within the North West, within a reasonable travelling distance of our Head Office in Warrington, to attend meetings and training courses when needed.
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        NEW
        Job Description Summary - We are seeking a results-driven Data Engineer to join our Grid Innovation team. This role focuses on designing, building, and maintaining the infrastructure and data pipelines that enable effective data collection, processing, storage, and analysis for cutting-edge AI/ML applications in the energy domain. Experience in the energy sector, smart infrastructure, or industrial automation is fundamental, as this role supports AI-driven innovation in mission-critical systems with high regulatory and operational complexity. As part of the CTO organization, reporting to the AI Leader, you will work closely with Grid Automation (GA) product lines, R&D teams, product management, and other GA functions. You will also support cross-functional initiatives by developing scalable and unified data frameworks to address critical customer problems and enable r
        Job Description Summary - We are seeking a results-driven Data Engineer to join our Grid Innovation team. This role focuses on designing, building, and maintaining the infrastructure and data pipelines that enable effective data collection, processing, storage, and analysis for cutting-edge AI/ML applications in the energy domain. Experience in the energy sector, smart infrastructure, or industrial automation is fundamental, as this role supports AI-driven innovation in mission-critical systems with high regulatory and operational complexity. As part of the CTO organization, reporting to the AI Leader, you will work closely with Grid Automation (GA) product lines, R&D teams, product management, and other GA functions. You will also support cross-functional initiatives by developing scalable and unified data frameworks to address critical customer problems and enable r
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        Fitch GroupInformation Services - United Kingdom , LondonApply Now - Fitch Group is currently seeking a Senior Software Developer Emp. Experience and Risk Technology based out of our London office. As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100 years of experience and colleagues in over 30 countries, Fitch Groups culture of credibility, independence, and transparency is embedded throughout its structure, which includes Fitch Ratings, one of the worlds top three credit ratings agencies, and Fitch Solutions, a leading provider of insights, data and analytics. With dual headquarters in London and New York, Fitch Group is owned by Hearst.
        Fitch GroupInformation Services - United Kingdom , LondonApply Now - Fitch Group is currently seeking a Senior Software Developer Emp. Experience and Risk Technology based out of our London office. As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100 years of experience and colleagues in over 30 countries, Fitch Groups culture of credibility, independence, and transparency is embedded throughout its structure, which includes Fitch Ratings, one of the worlds top three credit ratings agencies, and Fitch Solutions, a leading provider of insights, data and analytics. With dual headquarters in London and New York, Fitch Group is owned by Hearst.
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        Golang or Erlang Software Engineer (Junior, Senior & Lead Opportunities Available) Hybrid North West & Midlands | Remote Options Available Are you passionate about building robust APIs and scalable microservices? We're hiring backend engineers to work on a modern platform powering large-scale systems. Whether you're experienced in Golang or Erlang, or coming from another backend language (C#, Java, Python, TypeScript) and want to make the move, this is a chance to join a high-performing engineering team solving real-world problems at scale. Our systems are built around a microservices architecture, driven by performance, reliability, and clean service-to-service communication. You'll help design, develop, and optimise APIs that are integral to the platforms continued growth and evolution. What Youll Be Doing: Designing and developing high-performance RESTful and ...
        Golang or Erlang Software Engineer (Junior, Senior & Lead Opportunities Available) Hybrid North West & Midlands | Remote Options Available Are you passionate about building robust APIs and scalable microservices? We're hiring backend engineers to work on a modern platform powering large-scale systems. Whether you're experienced in Golang or Erlang, or coming from another backend language (C#, Java, Python, TypeScript) and want to make the move, this is a chance to join a high-performing engineering team solving real-world problems at scale. Our systems are built around a microservices architecture, driven by performance, reliability, and clean service-to-service communication. You'll help design, develop, and optimise APIs that are integral to the platforms continued growth and evolution. What Youll Be Doing: Designing and developing high-performance RESTful and ...
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        Fitch GroupInformation Services - United Kingdom , LondonApply Now - Fitch Group is currently seeking an Associate Director Emp. Experience and Risk Technology based out of our London office. As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100 years of experience and colleagues in over 30 countries, Fitch Groups culture of credibility, independence, and transparency is embedded throughout its structure, which includes Fitch Ratings, one of the worlds top three credit ratings agencies, and Fitch Solutions, a leading provider of insights, data and analytics. With dual headquarters in London and New York, Fitch Group is owned by Hearst. Fitch's Technology & Data Team is a dynamic department where innovation
        Fitch GroupInformation Services - United Kingdom , LondonApply Now - Fitch Group is currently seeking an Associate Director Emp. Experience and Risk Technology based out of our London office. As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100 years of experience and colleagues in over 30 countries, Fitch Groups culture of credibility, independence, and transparency is embedded throughout its structure, which includes Fitch Ratings, one of the worlds top three credit ratings agencies, and Fitch Solutions, a leading provider of insights, data and analytics. With dual headquarters in London and New York, Fitch Group is owned by Hearst. Fitch's Technology & Data Team is a dynamic department where innovation
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        Fitch GroupInformation Services - United Kingdom , LondonApply Now - Fitch Learning is currently seeking a Senior Python Developer based out of our London office. Fitch Learning is a leader in financial services training. With unrivaled breadth and depth, the company delivers learning solutions for apprentices, graduates, and those with 10+ years experience in Financial Services. Our offerings include expert faculty, e-learning, coaching, and blended assessments, improving individual and collective business performance. Fitch Learning is a Fitch Solutions company. Working at Fitch Learning provides the opportunity to be part of a global leader in financial education, committed to delivering cutting-edge training solutions. You'll collaborate with a team of experts dedicated to empowering professionals with the skills and knowledge needed to excel in the finance indust
        Fitch GroupInformation Services - United Kingdom , LondonApply Now - Fitch Learning is currently seeking a Senior Python Developer based out of our London office. Fitch Learning is a leader in financial services training. With unrivaled breadth and depth, the company delivers learning solutions for apprentices, graduates, and those with 10+ years experience in Financial Services. Our offerings include expert faculty, e-learning, coaching, and blended assessments, improving individual and collective business performance. Fitch Learning is a Fitch Solutions company. Working at Fitch Learning provides the opportunity to be part of a global leader in financial education, committed to delivering cutting-edge training solutions. You'll collaborate with a team of experts dedicated to empowering professionals with the skills and knowledge needed to excel in the finance indust
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        Fitch GroupInformation Services - Lead Machine Learning Engineer, Associate Director... United Kingdom , LondonApply Now - Fitch Group is currently seeking a Lead Machine Learning Engineer, Associate Director based out of our London office. As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100 years of experience and colleagues in over 30 countries, Fitch Groups culture of credibility, independence, and transparency is embedded throughout its structure, which includes Fitch Ratings, one of the worlds top three credit ratings agencies, and Fitch Solutions, a leading provider of insights, data and analytics. With dual headquarters in London and New York, Fitch Group is owned by Hearst.
        Fitch GroupInformation Services - Lead Machine Learning Engineer, Associate Director... United Kingdom , LondonApply Now - Fitch Group is currently seeking a Lead Machine Learning Engineer, Associate Director based out of our London office. As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100 years of experience and colleagues in over 30 countries, Fitch Groups culture of credibility, independence, and transparency is embedded throughout its structure, which includes Fitch Ratings, one of the worlds top three credit ratings agencies, and Fitch Solutions, a leading provider of insights, data and analytics. With dual headquarters in London and New York, Fitch Group is owned by Hearst.
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        Fitch GroupInformation Services - Lead Machine Learning Engineer, Associate Director... United Kingdom , ManchesterApply Now - Fitch Group is currently seeking a Lead Machine Learning Engineer, Associate Director based out of our Manchester office. As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100 years of experience and colleagues in over 30 countries, Fitch Groups culture of credibility, independence, and transparency is embedded throughout its structure, which includes Fitch Ratings, one of the worlds top three credit ratings agencies, and Fitch Solutions, a leading provider of insights, data and analytics. With dual headquarters in London and New York, Fitch Group is owned by Hearst.
        Fitch GroupInformation Services - Lead Machine Learning Engineer, Associate Director... United Kingdom , ManchesterApply Now - Fitch Group is currently seeking a Lead Machine Learning Engineer, Associate Director based out of our Manchester office. As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100 years of experience and colleagues in over 30 countries, Fitch Groups culture of credibility, independence, and transparency is embedded throughout its structure, which includes Fitch Ratings, one of the worlds top three credit ratings agencies, and Fitch Solutions, a leading provider of insights, data and analytics. With dual headquarters in London and New York, Fitch Group is owned by Hearst.
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        Proven experience in full-stack .NET development (C#/ASP.NET MVC/Web API). * Strong skills in API integration and backend connectivity.
        Proven experience in full-stack .NET development (C#/ASP.NET MVC/Web API). * Strong skills in API integration and backend connectivity.
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        What is the average salary for API in South East London?

        Average salary per year
        £72,499

        The average salary for a API in South East London is £72,499. API in South East London salaries range from £61,249 to £82,499.

        Frequently Asked Questions

        How many permanent API jobs are there in South East London?
        There are 57 permanent API jobs within 20 miles of South East London available on CWJobs right now.

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