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        12 Permanent API jobs in Barnsley + 20 miles

        Senior Software Engineer (Python)

        Beamost Ltd
        Leeds (LS1)
        Up to £200,000 per annum depending on experience.
        Experience with messaging / event-driven systems and strong API/schema discipline.
        Experience with messaging / event-driven systems and strong API/schema discipline.

        Data Activation Executive

        DFS Furniture Ltd
        Adwick, Doncaster (DN6), DN6 7NA
        £27200.00 - £34300.00
        Experience activating 1PD audiences and API/CAPI integrations.
        Experience activating 1PD audiences and API/CAPI integrations.
        PREMIUM

        Senior Java Developer

        RECOPS (LEEDS) LIMITED
        Leeds (LS1)
        Up to £67,000 per annum
        A growing digital consultancy is looking for experienced Java Developers to join multidisciplinary teams delivering large-scale digital platforms used by thousands of users across the UK. Youll be working in agile teams alongside engineers, designers and product specialists to build modern, user-focused services. The work involves designing, building and improving cloud-based applications that support critical digital services. This is a hands-on engineering role with a strong focus on clean code, collaboration and delivering high-quality software in fast-moving environments. What youll be doing * Building and maintaining Java-based backend services using modern frameworks * Designing scalable APIs and microservices used by high-traffic digital platforms * Working in agile delivery teams alongside product managers, designers and other engineers
        A growing digital consultancy is looking for experienced Java Developers to join multidisciplinary teams delivering large-scale digital platforms used by thousands of users across the UK. Youll be working in agile teams alongside engineers, designers and product specialists to build modern, user-focused services. The work involves designing, building and improving cloud-based applications that support critical digital services. This is a hands-on engineering role with a strong focus on clean code, collaboration and delivering high-quality software in fast-moving environments. What youll be doing * Building and maintaining Java-based backend services using modern frameworks * Designing scalable APIs and microservices used by high-traffic digital platforms * Working in agile delivery teams alongside product managers, designers and other engineers
        more

        Senior Software Developer

        Get Recruited (UK) Ltd
        Leeds, West Yorkshire, BBTE
        £38000.00 - £42000.00 per annum
        UP TO £50,000 + GREAT CULTURE + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. What We're Looking For * Solid experience working with PHP at a mid or senior level * Strong JavaScript skills, including working with APIs * Good knowledge of MariaDB/MySQL, including database structure and performance * Experience with AWS (e.g. hosting, deployments, or working with cloud-based services) * Experience working on live systems, especially where data sensitivity matters
        UP TO £50,000 + GREAT CULTURE + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. What We're Looking For * Solid experience working with PHP at a mid or senior level * Strong JavaScript skills, including working with APIs * Good knowledge of MariaDB/MySQL, including database structure and performance * Experience with AWS (e.g. hosting, deployments, or working with cloud-based services) * Experience working on live systems, especially where data sensitivity matters
        more
        NEWFEATURED

        Senior Software Developer

        Get Recruited (UK) Ltd
        Sheffield, South Yorkshire, BBTE
        £38000.00 - £42000.00 per annum
        UP TO £50,000 + GREAT CULTURE + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. What We're Looking For * Solid experience working with PHP at a mid or senior level * Strong JavaScript skills, including working with APIs * Good knowledge of MariaDB/MySQL, including database structure and performance * Experience with AWS (e.g. hosting, deployments, or working with cloud-based services) * Experience working on live systems, especially where data sensitivity matters
        UP TO £50,000 + GREAT CULTURE + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. What We're Looking For * Solid experience working with PHP at a mid or senior level * Strong JavaScript skills, including working with APIs * Good knowledge of MariaDB/MySQL, including database structure and performance * Experience with AWS (e.g. hosting, deployments, or working with cloud-based services) * Experience working on live systems, especially where data sensitivity matters
        more
        NEWFEATURED

        Senior Software Developer

        Get Recruited (UK) Ltd
        Barnsley, South Yorkshire, BBTE
        £38000.00 - £42000.00 per annum
        UP TO £50,000 + GREAT CULTURE + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. What We're Looking For * Solid experience working with PHP at a mid or senior level * Strong JavaScript skills, including working with APIs * Good knowledge of MariaDB/MySQL, including database structure and performance * Experience with AWS (e.g. hosting, deployments, or working with cloud-based services) * Experience working on live systems, especially where data sensitivity matters
        UP TO £50,000 + GREAT CULTURE + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. What We're Looking For * Solid experience working with PHP at a mid or senior level * Strong JavaScript skills, including working with APIs * Good knowledge of MariaDB/MySQL, including database structure and performance * Experience with AWS (e.g. hosting, deployments, or working with cloud-based services) * Experience working on live systems, especially where data sensitivity matters
        more
        NEWFEATURED

        PHP Developer

        Get Recruited (UK) Ltd
        Leeds, West Yorkshire, BBTE
        £38000.00 - £42000.00 per annum
        UP TO £50,000 + GREAT CULTURE + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. What We're Looking For * Solid experience working with PHP at a mid or senior level * Strong JavaScript skills, including working with APIs * Good knowledge of MariaDB/MySQL, including database structure and performance * Experience with AWS (e.g. hosting, deployments, or working with cloud-based services) * Experience working on live systems, especially where data sensitivity matters
        UP TO £50,000 + GREAT CULTURE + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. What We're Looking For * Solid experience working with PHP at a mid or senior level * Strong JavaScript skills, including working with APIs * Good knowledge of MariaDB/MySQL, including database structure and performance * Experience with AWS (e.g. hosting, deployments, or working with cloud-based services) * Experience working on live systems, especially where data sensitivity matters
        more
        NEWFEATURED

        Lead DevOps Engineer

        DWP Digital
        Upperthorpe, Sheffield (S3), S3 7UF
        £75026 - £92522 per annum
        Pay up to £92,522 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. This is a real and significant DevOps leadership role in the UK's largest government department. Here you will have the freedom and autonomy to drive the development of our technical landscape and define what DevOps looks like in DWP - Digital with Purpose. We're looking for someone who has the vision to lead multiple teams through the adoption of cutting-edge infrastructure and development technologies. You'll be a leading, expert voice in a DWP Digital community that is driving a once-in-a-generation transformation of public services. We have a unique purpose - putting better, more efficient services in the hands of DWP users. * We have 1bn lines of code in over 12,000 code repos and 90+ programming languages.
        Pay up to £92,522 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. This is a real and significant DevOps leadership role in the UK's largest government department. Here you will have the freedom and autonomy to drive the development of our technical landscape and define what DevOps looks like in DWP - Digital with Purpose. We're looking for someone who has the vision to lead multiple teams through the adoption of cutting-edge infrastructure and development technologies. You'll be a leading, expert voice in a DWP Digital community that is driving a once-in-a-generation transformation of public services. We have a unique purpose - putting better, more efficient services in the hands of DWP users. * We have 1bn lines of code in over 12,000 code repos and 90+ programming languages.
        more

        Lead DevOps Engineer

        DWP Digital
        Leeds (LS9), LS2 7UA
        £75026 - £92522 per annum
        Pay up to £92,522 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. This is a real and significant DevOps leadership role in the UK's largest government department. Here you will have the freedom and autonomy to drive the development of our technical landscape and define what DevOps looks like in DWP - Digital with Purpose. We're looking for someone who has the vision to lead multiple teams through the adoption of cutting-edge infrastructure and development technologies. You'll be a leading, expert voice in a DWP Digital community that is driving a once-in-a-generation transformation of public services. We have a unique purpose - putting better, more efficient services in the hands of DWP users. * We have 1bn lines of code in over 12,000 code repos and 90+ programming languages.
        Pay up to £92,522 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. This is a real and significant DevOps leadership role in the UK's largest government department. Here you will have the freedom and autonomy to drive the development of our technical landscape and define what DevOps looks like in DWP - Digital with Purpose. We're looking for someone who has the vision to lead multiple teams through the adoption of cutting-edge infrastructure and development technologies. You'll be a leading, expert voice in a DWP Digital community that is driving a once-in-a-generation transformation of public services. We have a unique purpose - putting better, more efficient services in the hands of DWP users. * We have 1bn lines of code in over 12,000 code repos and 90+ programming languages.
        more

        Lead Full Stack Developer

        Oscar Associates (UK) Limited
        Leeds (LS1)
        £60000 - £85000 per annum
        I'm currently partnered with a global software provider delivering data-driven, high-performance web applications. They're looking for a Lead Web Developer to take ownership of a major front-end modernisation project and help guide the next phase of their product development. This is an exciting opportunity for an experienced developer who thrives in a technical leadership role - someone who enjoys setting architectural direction, mentoring engineers, and remaining hands-on with code. * Lead the design and development of full stack web applications using React and TypeScript on the front end, and Java/Spring on the back end. * Drive a key front-end migration project to deliver a cleaner, faster, and more scalable user experience. * Define and uphold best engineering practices, performing code reviews and ensuring high-quality, maintainable code.
        I'm currently partnered with a global software provider delivering data-driven, high-performance web applications. They're looking for a Lead Web Developer to take ownership of a major front-end modernisation project and help guide the next phase of their product development. This is an exciting opportunity for an experienced developer who thrives in a technical leadership role - someone who enjoys setting architectural direction, mentoring engineers, and remaining hands-on with code. * Lead the design and development of full stack web applications using React and TypeScript on the front end, and Java/Spring on the back end. * Drive a key front-end migration project to deliver a cleaner, faster, and more scalable user experience. * Define and uphold best engineering practices, performing code reviews and ensuring high-quality, maintainable code.
        more

        Software Developer

        Oscar Associates (UK) Limited
        Leeds (LS1)
        £40000 - £45000 per annum
        .NET Developer | £40,000 - £45,000 DOE - We're working with an established and growing organisation looking to add a skilled .NET Developer to their development team. This is a great opportunity for someone who enjoys building robust, scalable applications and wants a healthy balance between home and office working. The Role - You'll be part of a collaborative development team, contributing to the design, development, and maintenance of modern software solutions. The role offers exposure to a variety of projects and the chance to influence technical decisions. Key Responsibilities * Develop, maintain, and improve applications using C# and .NET * Collaborate with cross-functional teams to deliver high-quality solutions * Write clean, maintainable, and well-tested code * Participate in code reviews and contribute to best practices * Troubleshoot, debug, and optimise existing systems
        .NET Developer | £40,000 - £45,000 DOE - We're working with an established and growing organisation looking to add a skilled .NET Developer to their development team. This is a great opportunity for someone who enjoys building robust, scalable applications and wants a healthy balance between home and office working. The Role - You'll be part of a collaborative development team, contributing to the design, development, and maintenance of modern software solutions. The role offers exposure to a variety of projects and the chance to influence technical decisions. Key Responsibilities * Develop, maintain, and improve applications using C# and .NET * Collaborate with cross-functional teams to deliver high-quality solutions * Write clean, maintainable, and well-tested code * Participate in code reviews and contribute to best practices * Troubleshoot, debug, and optimise existing systems
        more

        41 exact matches jobs are outside your preferred location

        Workday Integration Developer

        Freshfields Bruckhaus Deringer
        Manchester, Greater Manchester
        Competitive
        Oversee API management (SOAP/REST, authentication models, vendor advisories) and integration platform operations, resolving technical issues and ensuring performance.
        Oversee API management (SOAP/REST, authentication models, vendor advisories) and integration platform operations, resolving technical issues and ensuring performance.
        more

        Senior Software Developer

        KO2 Embedded Recruitment Solutions LTD
        Daneshouse, Burnley (BB10), BB10 1DY
        £60000 - £70000 per annum
        Architect cloud-native solutions using AWS services (IoT Core, Lambda, DynamoDB, API Gateway, etc.) * Deep knowledge of AWS Technologies (IoT Core, Lambda, DynamoDB, Kinesis, SQS, API Gateway)
        Architect cloud-native solutions using AWS services (IoT Core, Lambda, DynamoDB, API Gateway, etc.) * Deep knowledge of AWS Technologies (IoT Core, Lambda, DynamoDB, Kinesis, SQS, API Gateway)
        more
        FEATURED

        Lead Technical Architect

        TPXImpact Holdings Plc
        Manchester (M1)
        From £53,600 to £79,200 per annum
        AboutTheRole - WerelookingformultipleLeadTechnicalArchitectswhowillplayacentralroleinthesuccessfuldeliveryoftechnologyprojects. Youwillworkcloselywithclientsandinternalteamstounderstandcontext,co-designsolutions,andleadtechnicalteamsthroughproductdevelopment. Inthisrole,youwillleadarchitectureworkonclientprogrammes. Youwilldesignandoverseeend-to-endtechnologysolutionsthatarescalable,secure,user-centred,andethicallyresponsible. Thisroleinvolvestranslatingbusinessneedsintotechnologysolutions,creatingarchitectureartefacts,andsupportingclientstomakesustainableanduser-focusedtechnologychoices. Youmightbeaspecialistinaparticulartechnologydomainorplatform-suchaslegacysystemmigration,m365,Azure,GCP,AWS,dataplatformsorintelligentprocessautomation-butyouwillapplyatechnologyagnosticperspective. You'lloperateasatrustedadvisor,oftenleadingsmallerengagementsorplayingaseniorroleonlargerones,butmayalsoworksoloorcontributeasamemberofateamasneeded.
        AboutTheRole - WerelookingformultipleLeadTechnicalArchitectswhowillplayacentralroleinthesuccessfuldeliveryoftechnologyprojects. Youwillworkcloselywithclientsandinternalteamstounderstandcontext,co-designsolutions,andleadtechnicalteamsthroughproductdevelopment. Inthisrole,youwillleadarchitectureworkonclientprogrammes. Youwilldesignandoverseeend-to-endtechnologysolutionsthatarescalable,secure,user-centred,andethicallyresponsible. Thisroleinvolvestranslatingbusinessneedsintotechnologysolutions,creatingarchitectureartefacts,andsupportingclientstomakesustainableanduser-focusedtechnologychoices. Youmightbeaspecialistinaparticulartechnologydomainorplatform-suchaslegacysystemmigration,m365,Azure,GCP,AWS,dataplatformsorintelligentprocessautomation-butyouwillapplyatechnologyagnosticperspective. You'lloperateasatrustedadvisor,oftenleadingsmallerengagementsorplayingaseniorroleonlargerones,butmayalsoworksoloorcontributeasamemberofateamasneeded.
        more
        PREMIUM
        You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment. * Implement secure authentication mechanisms (JWT, OAuth2, API Keys) * Maintain and publish API documentation via Swagger / OpenAPI * Ensure API security, reliability, and performance (error handling, retry logic, logging, timeouts, CORS) * Collaborate with database, infrastructure, and QA teams for portal and API releases * ASP.NET MVC or .NET Core Web API * REST API expertise and integration (HttpClient, RestSharp, JSON serialization/deserialization, CORS, HTTPS, API security) * Experience with fintech or payments API integration * Performance optimization and API rate-handling
        You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment. * Implement secure authentication mechanisms (JWT, OAuth2, API Keys) * Maintain and publish API documentation via Swagger / OpenAPI * Ensure API security, reliability, and performance (error handling, retry logic, logging, timeouts, CORS) * Collaborate with database, infrastructure, and QA teams for portal and API releases * ASP.NET MVC or .NET Core Web API * REST API expertise and integration (HttpClient, RestSharp, JSON serialization/deserialization, CORS, HTTPS, API security) * Experience with fintech or payments API integration * Performance optimization and API rate-handling
        more
        FEATURED

        Solution Architect - HR Platforms

        Freshfields Bruckhaus Deringer
        Manchester, Greater Manchester
        Competitive
        Are you a visionary architect passionate about harnessing technology to transform HR functions? Join us at Freshfields as our Lead Architect for HR Technology a global role at the cornerstone of our architectural and digital strategy for HR. About the Role - As Lead Architect, you will drive the direction, design, and implementation of cutting-edge HR technology solutions in a truly global environment. Youll collaborate closely with HR, Product, and IT stakeholders to co-create and execute an architectural vision, ensuring alignment with business outcomes and our overall IT Strategy. * Defining and assuring innovative HR platforms and integrated solutions, with a focus on security, integrity, performance, and interoperability. * Designing platform architectures, integration patterns, and high-quality documentation for diverse audiences.
        Are you a visionary architect passionate about harnessing technology to transform HR functions? Join us at Freshfields as our Lead Architect for HR Technology a global role at the cornerstone of our architectural and digital strategy for HR. About the Role - As Lead Architect, you will drive the direction, design, and implementation of cutting-edge HR technology solutions in a truly global environment. Youll collaborate closely with HR, Product, and IT stakeholders to co-create and execute an architectural vision, ensuring alignment with business outcomes and our overall IT Strategy. * Defining and assuring innovative HR platforms and integrated solutions, with a focus on security, integrity, performance, and interoperability. * Designing platform architectures, integration patterns, and high-quality documentation for diverse audiences.
        more

        Infrastructure Security Engineer

        Elevate Recruitment.
        Chorley (PR7)
        Up to £40,000 per annum C£40K, hybrid working & excellent benefits
        Drive efficiency through automation utilising PowerShell, with integration to Microsoft services such as Active Directory and Graph API
        Drive efficiency through automation utilising PowerShell, with integration to Microsoft services such as Active Directory and Graph API
        more
        NEW

        Cyber Security Analyst

        Elevate Recruitment.
        Warrington (WA5)
        Up to £40,000 per annum C£40K, hybrid working & excellent benefits
        Drive efficiency through automation utilising PowerShell, with integration to Microsoft services such as Active Directory and Graph API
        Drive efficiency through automation utilising PowerShell, with integration to Microsoft services such as Active Directory and Graph API
        more

        Cyber Security Analyst

        Elevate Recruitment.
        Chorley (PR7)
        Up to £40,000 per annum C£40K, hybrid working & excellent benefits
        Drive efficiency through automation utilising PowerShell, with integration to Microsoft services such as Active Directory and Graph API
        Drive efficiency through automation utilising PowerShell, with integration to Microsoft services such as Active Directory and Graph API
        more

        Head of IT

        Brellis Recruitment
        Mansfield (NG19), NG19
        £50k - 60k per year
        Engage confidently with third-party software developers, portal and API suppliers, and automation vendors — pushing back where needed
        Engage confidently with third-party software developers, portal and API suppliers, and automation vendors — pushing back where needed
        more

        Chemist Inspector

        Intertek
        Immingham (DN40), DN40 2NT
        competitive salary and package
        Measure cargo quantity using tank gauging, ullage, sounding, and dipping, calculate volumes using calibration tables, API/ASTM standards, and temperature corrections, Verify ship, shore, and terminal figures during loading and discharge, Witness and record custody transfer measurements. * Take representative samples of petroleum products and chemicals, ensure sampling follows API, ASTM, ISO, or IP standards, check product specifications (density, temperature, appearance, water content), Identify contamination, commingling, or off-spec cargoes.
        Measure cargo quantity using tank gauging, ullage, sounding, and dipping, calculate volumes using calibration tables, API/ASTM standards, and temperature corrections, Verify ship, shore, and terminal figures during loading and discharge, Witness and record custody transfer measurements. * Take representative samples of petroleum products and chemicals, ensure sampling follows API, ASTM, ISO, or IP standards, check product specifications (density, temperature, appearance, water content), Identify contamination, commingling, or off-spec cargoes.
        more
        PREMIUM

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        Frequently Asked Questions

        How many permanent API jobs are there in Barnsley?
        There are 12 permanent API jobs within 20 miles of Barnsley available on CWJobs right now.

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