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        4 Permanent API jobs in Wales + 20 miles

        Software Developer, C#, ASP.NET, MVC, COR7327B

        Corriculo Ltd
        Cardiff Gate, CF23
        £55k - 75k per year + Benefits
        Taking a lead role in the development and support of MVC and .NET web applications, as well as C# Console and API solutions, this Senior Software Developer role sits at the intersection of development leadership and hands-on technical coding and delivery. * Proficiency in JavaScript and Web API
        Taking a lead role in the development and support of MVC and .NET web applications, as well as C# Console and API solutions, this Senior Software Developer role sits at the intersection of development leadership and hands-on technical coding and delivery. * Proficiency in JavaScript and Web API
        more
        NEW

        Lead Dynamics Developer

        Intellectual Property Office
        Rhiwderyn, NP10 8QQ
        From £64,079 to £75,701 per annum (salary package will be DOE)
        The IPO is a modern organisation which depends on its IT services to operate and innovate effectively. In order to provide up to date services to our customers both nationally and internationally systems need to be developed, improved and maintained. You will have the opportunity to work on the latest cutting edge cloud technologies, use modern delivery processes and work on innovative projects some including the use of AI and ML. Working alongside experts in their fields you will have the opportunity to make valuable contributions without compromising on quality. You will need the appetite to learn new technologies and methodologies for delivering high quality IT services. In this role you will work within a multi-disciplined team using several technologies to build enterprise grade services as well as mentoring and coaching team members.
        The IPO is a modern organisation which depends on its IT services to operate and innovate effectively. In order to provide up to date services to our customers both nationally and internationally systems need to be developed, improved and maintained. You will have the opportunity to work on the latest cutting edge cloud technologies, use modern delivery processes and work on innovative projects some including the use of AI and ML. Working alongside experts in their fields you will have the opportunity to make valuable contributions without compromising on quality. You will need the appetite to learn new technologies and methodologies for delivering high quality IT services. In this role you will work within a multi-disciplined team using several technologies to build enterprise grade services as well as mentoring and coaching team members.
        more
        NEW
        Consult on API design, performance, scalability, and security. * Strong Azure knowledge, including Logic Apps, Service Bus, Functions, API Management. * Proficient in API design, relational data modelling, and integration strategies.
        Consult on API design, performance, scalability, and security. * Strong Azure knowledge, including Logic Apps, Service Bus, Functions, API Management. * Proficient in API design, relational data modelling, and integration strategies.
        more

        12 exact matches jobs are outside your preferred location

        IT Jobs in Poland With Work Sponsorship / VISA Hiring at Infinity Quest (Please apply if you are currently in Poland) Already living in Poland? We're hiring experienced tech professionals for global projects - full work permit provided. Only candidates based in Poland will be considered. 1. DevOps Engineer (AWS / Azure / GCP | CI/CD | Terraform / Ansible | Kubernetes) 2. Cloud Data Engineer (AWS (Redshift, Glue) / Azure (ADF, Synapse) / GCP (BigQuery, Dataflow) | Python | SQL | Spark | DBT) 3. Full Stack Engineer (React / Angular | Java / Python / Node.js | Cloud) 4. Java Backend Developer (Java | Spring Boot | Microservices | Cloud Platforms) 5. Data Engineer (Power BI / MSBI | Python | SQL | Snowflake) 6. Data Scientist / ML Engineer (Python | Pandas | TensorFlow / PyTorch | Data Modelling) 7. Golang Developer (Golang | REST APIs | Concurrency | Cloud-native develop
        IT Jobs in Poland With Work Sponsorship / VISA Hiring at Infinity Quest (Please apply if you are currently in Poland) Already living in Poland? We're hiring experienced tech professionals for global projects - full work permit provided. Only candidates based in Poland will be considered. 1. DevOps Engineer (AWS / Azure / GCP | CI/CD | Terraform / Ansible | Kubernetes) 2. Cloud Data Engineer (AWS (Redshift, Glue) / Azure (ADF, Synapse) / GCP (BigQuery, Dataflow) | Python | SQL | Spark | DBT) 3. Full Stack Engineer (React / Angular | Java / Python / Node.js | Cloud) 4. Java Backend Developer (Java | Spring Boot | Microservices | Cloud Platforms) 5. Data Engineer (Power BI / MSBI | Python | SQL | Snowflake) 6. Data Scientist / ML Engineer (Python | Pandas | TensorFlow / PyTorch | Data Modelling) 7. Golang Developer (Golang | REST APIs | Concurrency | Cloud-native develop
        more

        Technical Integration Lead

        Zorba Consulting
        UK
        From £60,000 to £70,000 per annum 28 days hols, health insurance, soci
        Join a fast-growing HR software company as a Technical Lead for their Integration team with Client Facing experience, leading/mentoring technical teams and API development & integrations experience (C#, .NET, SQL Server). * 4+ years experience in API development and integrations (REST, SOAP, GraphQL) * Expertise in AWS services (Lambda, API Gateway, S3, DynamoDB, SQS, SNS)
        Join a fast-growing HR software company as a Technical Lead for their Integration team with Client Facing experience, leading/mentoring technical teams and API development & integrations experience (C#, .NET, SQL Server). * 4+ years experience in API development and integrations (REST, SOAP, GraphQL) * Expertise in AWS services (Lambda, API Gateway, S3, DynamoDB, SQS, SNS)
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        NEW
        Location: Onsite (secure location, UK) Clearance: Developed Vetting (eDV) required - Employment Type: Permanent - Overview - We are seeking an experienced Fullstack Software Engineer with active eDV clearance to join a high-performing engineering team working on critical projects within the UK Defence and National Security sector. The successful candidate will be responsible for designing, developing, and maintaining secure, scalable, and high-quality software solutions across both front-end and back-end systems. Key Responsibilities * Design, develop, and maintain fullstack applications with a focus on performance, security, and reliability * Contribute to software architecture and technical decision-making in complex, secure environments * Implement and maintain APIs, databases, and user interfaces * Write clean, maintainable, and testable code following modern engi
        Location: Onsite (secure location, UK) Clearance: Developed Vetting (eDV) required - Employment Type: Permanent - Overview - We are seeking an experienced Fullstack Software Engineer with active eDV clearance to join a high-performing engineering team working on critical projects within the UK Defence and National Security sector. The successful candidate will be responsible for designing, developing, and maintaining secure, scalable, and high-quality software solutions across both front-end and back-end systems. Key Responsibilities * Design, develop, and maintain fullstack applications with a focus on performance, security, and reliability * Contribute to software architecture and technical decision-making in complex, secure environments * Implement and maintain APIs, databases, and user interfaces * Write clean, maintainable, and testable code following modern engi
        more
        TypeScript | React | Go | Python | Mission-Driven Start-up - Weve partnered with a mission-driven, remote-first start-up thats transforming a global industry worth billions. Their platform is tackling long-standing inefficiencies, unlocking fairness, transparency, and faster payments for creators and rights-holders worldwide. Theyre looking for a Full Stack Software Engineer who wants to build technology that makes a real impact. You wont just write code - youll solve real-world problems that improve how people get paid and recognized. Youll build end-to-end features across UI, APIs, and infrastructure, helping the team deliver meaningful products. * Salary:Up to £100,000 (DOE) * Location:Fully remote (UK only) * Key Technologies:TypeScript, React, Next.js, Go or Python, AWS or GCP - Senior Software Engineer Requirements * 5+ years experience as a Software Engineer (F
        TypeScript | React | Go | Python | Mission-Driven Start-up - Weve partnered with a mission-driven, remote-first start-up thats transforming a global industry worth billions. Their platform is tackling long-standing inefficiencies, unlocking fairness, transparency, and faster payments for creators and rights-holders worldwide. Theyre looking for a Full Stack Software Engineer who wants to build technology that makes a real impact. You wont just write code - youll solve real-world problems that improve how people get paid and recognized. Youll build end-to-end features across UI, APIs, and infrastructure, helping the team deliver meaningful products. * Salary:Up to £100,000 (DOE) * Location:Fully remote (UK only) * Key Technologies:TypeScript, React, Next.js, Go or Python, AWS or GCP - Senior Software Engineer Requirements * 5+ years experience as a Software Engineer (F
        more
        Do you bring a breadth of technical expertise across reservation systems, Dynamics CRM, and API design? * Deep technical expertise across API design, integration layers, and data flow management.
        Do you bring a breadth of technical expertise across reservation systems, Dynamics CRM, and API design? * Deep technical expertise across API design, integration layers, and data flow management.
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        NEWFEATURED
        Apply now - Date: 27 Aug 2025 - Location: London region, GB - 81357 - Power System & Product Development Engineer - This Power System & Product Development Engineer will report to the Network Access Manager and will work within DSO directorate based in our London office. You will be a permanent employee. You will attract a salary of £80,574.00 and a bonus of 3%. This role can also offer blended working after probationary period (6 months) - 3 days in the office and 2 remote - Close Date: 14/09/2025 - We also provide the following additional benefits * 25 Days Annual Leave plus bank holidays. * Reservist Leave - Additional 18 days full pay and 22 unpaid * Personal Pension Plan - Personal contribution rates of 4% or 5% (UK Power Networks will make a corresponding contribution of 8% or 10%) * Tenancy Loan Deposit Scheme, Season Ticket Loan
        Apply now - Date: 27 Aug 2025 - Location: London region, GB - 81357 - Power System & Product Development Engineer - This Power System & Product Development Engineer will report to the Network Access Manager and will work within DSO directorate based in our London office. You will be a permanent employee. You will attract a salary of £80,574.00 and a bonus of 3%. This role can also offer blended working after probationary period (6 months) - 3 days in the office and 2 remote - Close Date: 14/09/2025 - We also provide the following additional benefits * 25 Days Annual Leave plus bank holidays. * Reservist Leave - Additional 18 days full pay and 22 unpaid * Personal Pension Plan - Personal contribution rates of 4% or 5% (UK Power Networks will make a corresponding contribution of 8% or 10%) * Tenancy Loan Deposit Scheme, Season Ticket Loan
        more

        These jobs might also interest you

        GCP certification (e.g. Associate Cloud Engineer, Professional Cloud Developer) preferred - We're seeking a skilled GCP Cloud Developer to design and implement scalable, serverless applications and cloud-native solutions on Google Cloud Platform. The role includes building APIs via Apigee, working with Cloud Functions, Dataflow, Cloud SQL, and automating tasks with Excel VBA. - Develop serverless applications using Cloud Functions (Python or Node.js) - Build and optimise data pipelines with Cloud Dataflow - Manage relational databases via Cloud SQL (PostgreSQL/MySQL) - Solid experience with GCP services (Cloud Functions, SQL, Dataflow, IAM, GCS) Start: ASAP - Duration: 6-12 months - L
        GCP certification (e.g. Associate Cloud Engineer, Professional Cloud Developer) preferred - We're seeking a skilled GCP Cloud Developer to design and implement scalable, serverless applications and cloud-native solutions on Google Cloud Platform. The role includes building APIs via Apigee, working with Cloud Functions, Dataflow, Cloud SQL, and automating tasks with Excel VBA. - Develop serverless applications using Cloud Functions (Python or Node.js) - Build and optimise data pipelines with Cloud Dataflow - Manage relational databases via Cloud SQL (PostgreSQL/MySQL) - Solid experience with GCP services (Cloud Functions, SQL, Dataflow, IAM, GCS) Start: ASAP - Duration: 6-12 months - L
        more
        NEW

        Lead Software Developer

        Copello
        Stevenage, Hertfordshire
        Up to £65,000 per annum Bonus up to 21%, Pension up to 14%
        Were looking for a proactive and passionate Lead Software Developer to join our expanding team inSystems Simulation & Experimentation, creating innovative solutions that deliver an end-to-end representation of advancedsystems. * Lead a small software team developing synthetic environments and simulation components. Are you ready to lead the development of cutting-edge simulation and experimentation environments that shape the future of defence systems? * Collaborate with project leads, simulation architects and multi-disciplinary teams. * Strong background in software engineering (C++, C#). * (Bonus) Experience with real-time software, DIS or HLA simulation standards. Location: Hybrid (34 days per week on-site) Salary:Up to £65,000 (plus bonus and exc
        Were looking for a proactive and passionate Lead Software Developer to join our expanding team inSystems Simulation & Experimentation, creating innovative solutions that deliver an end-to-end representation of advancedsystems. * Lead a small software team developing synthetic environments and simulation components. Are you ready to lead the development of cutting-edge simulation and experimentation environments that shape the future of defence systems? * Collaborate with project leads, simulation architects and multi-disciplinary teams. * Strong background in software engineering (C++, C#). * (Bonus) Experience with real-time software, DIS or HLA simulation standards. Location: Hybrid (34 days per week on-site) Salary:Up to £65,000 (plus bonus and exc
        more
        NEW

        Lead Dynamics Developer

        Yolk Recruitment
        Rhiwderyn, NP10 8QQ
        £64000 - £75000 per annum
        We are helping them recruit for a Lead Dynamics Developer who has experience with C# and Microservice architecture. What the Lead Dynamics Developer will be doing - What the successful Lead Dynamics Developer will bring to the team - If you think this Lead Dynamics Developer opportunity is for you then please apply online. You will be line managing 5 direct reports, whilst working on the Dynamics Development and contributing to departmental strategy. You will have proven experience of Dynamics alongside knowledge of C# and microservice development. * Proven experience working with Dynamics to create applications. The Opportunity - Yolk Recruitment Public Sector & Not-for-Profit team h
        We are helping them recruit for a Lead Dynamics Developer who has experience with C# and Microservice architecture. What the Lead Dynamics Developer will be doing - What the successful Lead Dynamics Developer will bring to the team - If you think this Lead Dynamics Developer opportunity is for you then please apply online. You will be line managing 5 direct reports, whilst working on the Dynamics Development and contributing to departmental strategy. You will have proven experience of Dynamics alongside knowledge of C# and microservice development. * Proven experience working with Dynamics to create applications. The Opportunity - Yolk Recruitment Public Sector & Not-for-Profit team h
        more

        Senior Software Engineer (Java or C/C++)

        Leidos Innovations UK Limited
        South Farnborough, GU14 6TQ
        Up to £70,000 per annum
        Senior Software Engineer We are in search of a Senior Software Engineer to support a Government Critical National Infrastructure project. As a Senior Software Engineer you will lead multiple software development team(s) to deliver solutions with architectures that provide capability improvements, reduced costs and flexibility to adapt quickly to customer needs. * Responsible for the application-level outcomes, prioritisation of those outcomes and maintaining a roadmap of capability improvements (in conjunction with the Senior Leadership Team) related to the softwares architecture and the end-to-end design. * Lead multiple software development team(s)
        Senior Software Engineer We are in search of a Senior Software Engineer to support a Government Critical National Infrastructure project. As a Senior Software Engineer you will lead multiple software development team(s) to deliver solutions with architectures that provide capability improvements, reduced costs and flexibility to adapt quickly to customer needs. * Responsible for the application-level outcomes, prioritisation of those outcomes and maintaining a roadmap of capability improvements (in conjunction with the Senior Leadership Team) related to the softwares architecture and the end-to-end design. * Lead multiple software development team(s)
        more
        NEWFEATURED

        Senior Integration Developer

        Oscar Associates (UK) Limited
        London
        £55000 - £60000 per annum
        Role - Senior Integration Developer A new position has come to light for a Senior Integration Developer to join a company who have had their strongest financial year ever. These positions report to the Integration Lead and Architect and you will be working alongside a team of strong developers and programmers. If you are a talented Integration Developer interested in progressing your career with an organisation committed to meeting and innovating the needs of an increasingly diverse client and consumer base with the best talent across the globe, then your search ends here! Historically a portion of their integration work has been outsourced to a 3rd party but they are in the process of bringing this all-in house to allow greater control and efficienci
        Role - Senior Integration Developer A new position has come to light for a Senior Integration Developer to join a company who have had their strongest financial year ever. These positions report to the Integration Lead and Architect and you will be working alongside a team of strong developers and programmers. If you are a talented Integration Developer interested in progressing your career with an organisation committed to meeting and innovating the needs of an increasingly diverse client and consumer base with the best talent across the globe, then your search ends here! Historically a portion of their integration work has been outsourced to a 3rd party but they are in the process of bringing this all-in house to allow greater control and efficienci
        more
        NEWFEATURED

        Senior Software Engineer for Southampton based organisation

        Claremont Consulting
        SO14, Southampton
        £55000.00 - £66000.00 per annum + Many benefits, superb pension
        Senior Software Engineer for hybrid IT role with my client's offices being based in Southampton - My client is looking to recruit a Senior Software Engineer with excellent .Net c# developer skills - Working with other members of the team to collaborate to produce high-quality software solutions contributing to and following established development practices. The Technology function is responsible for the delivery of business and technology change including the provision of robust infrastructure and IT service operations - The Technology function brings technology enabled innovation to market by developing relevant, integrated and optimised solutions that are scalable, commercially viable and deliver long-term value aligned to the business strategy. Working as a strategic partner to the business the aim of the departme
        Senior Software Engineer for hybrid IT role with my client's offices being based in Southampton - My client is looking to recruit a Senior Software Engineer with excellent .Net c# developer skills - Working with other members of the team to collaborate to produce high-quality software solutions contributing to and following established development practices. The Technology function is responsible for the delivery of business and technology change including the provision of robust infrastructure and IT service operations - The Technology function brings technology enabled innovation to market by developing relevant, integrated and optimised solutions that are scalable, commercially viable and deliver long-term value aligned to the business strategy. Working as a strategic partner to the business the aim of the departme
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        NEW
        Are you an experienced Software Engineer with strong expertise in .NET Core and Azure? Experience: 8-10 years as a Software Engineer Epsom & Remote | 6-Month Contract | £69/hr (Inside IR35) We're looking for a talented developer to join our IT Services team on a 6-month contract to help deliver modern, high-quality applications and support the migration of legacy systems to newer technologies. This is a fantastic opportunity to work within an evolving IT function that's shifting from "Business as Usual" to becoming a true digital partner to the business, driving innovation and value through technology. Develop and enhance custom applications using .NET Core (C#), Entity Framework Core, Razor Pages, and Blazor. Support migration of older applications to modern technologies. Collaborate with IT and business teams to ensure high-quality,
        Are you an experienced Software Engineer with strong expertise in .NET Core and Azure? Experience: 8-10 years as a Software Engineer Epsom & Remote | 6-Month Contract | £69/hr (Inside IR35) We're looking for a talented developer to join our IT Services team on a 6-month contract to help deliver modern, high-quality applications and support the migration of legacy systems to newer technologies. This is a fantastic opportunity to work within an evolving IT function that's shifting from "Business as Usual" to becoming a true digital partner to the business, driving innovation and value through technology. Develop and enhance custom applications using .NET Core (C#), Entity Framework Core, Razor Pages, and Blazor. Support migration of older applications to modern technologies. Collaborate with IT and business teams to ensure high-quality,
        more
        NEW

        Mid/Senior Software Engineer

        Oscar Associates (UK) Limited
        Gloucester, Gloucestershire
        £55000 - £75000 per annum
        We are working with a fast-growing business at the forefront of Cyber, Defence and IT solutions, and we're looking for a talented Mid/Senior Software Engineer with current MOD DV or eDV Clearance to join their expanding team in Gloucester. * Strong commercial experience as a Software Engineer (Mid or Senior level). If you are a motivated Software Engineer with MOD DV or eDV Clearance and strong skills in Python or Java, we'd love to hear from you. You'll be part of a close-knit group of 20 engineers, working on a variety of cutting-edge projects that make a real impact. * Designing, developing, and maintaining secure, high-quality software solutions. * Collaborating with a team of engineers on diverse projects in the Cyber and Defence sectors. * Solid understanding of software engineering principles, testing, and version control. * Collaborative culture with a skilled
        We are working with a fast-growing business at the forefront of Cyber, Defence and IT solutions, and we're looking for a talented Mid/Senior Software Engineer with current MOD DV or eDV Clearance to join their expanding team in Gloucester. * Strong commercial experience as a Software Engineer (Mid or Senior level). If you are a motivated Software Engineer with MOD DV or eDV Clearance and strong skills in Python or Java, we'd love to hear from you. You'll be part of a close-knit group of 20 engineers, working on a variety of cutting-edge projects that make a real impact. * Designing, developing, and maintaining secure, high-quality software solutions. * Collaborating with a team of engineers on diverse projects in the Cyber and Defence sectors. * Solid understanding of software engineering principles, testing, and version control. * Collaborative culture with a skilled
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        NEWFEATURED
        Are you a talented Software Developer eager to take on exciting project-based work with leading organisations? At Myn, were dedicated to helping software professionals find fulfilling contract opportunities that elevate their careers and connect them with innovative projects. We are seeking skilled developers for multiple contract opportunities across various sectors, including tech, finance, and healthcare. * Collaborate with innovative teams to design and implement robust software solutions that meet business needs. These contract roles are ideal for developers looking to make an impact quickly and explore different industries while enjoying the freedom of flexible assignments. * 3+ years of experience in software development or related roles. * Demonstrated experie
        Are you a talented Software Developer eager to take on exciting project-based work with leading organisations? At Myn, were dedicated to helping software professionals find fulfilling contract opportunities that elevate their careers and connect them with innovative projects. We are seeking skilled developers for multiple contract opportunities across various sectors, including tech, finance, and healthcare. * Collaborate with innovative teams to design and implement robust software solutions that meet business needs. These contract roles are ideal for developers looking to make an impact quickly and explore different industries while enjoying the freedom of flexible assignments. * 3+ years of experience in software development or related roles. * Demonstrated experie
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        What is the average salary for API in Wales?

        Average salary per year
        £42,499

        The average salary for a API in Wales is £42,499. API in Wales salaries range from £32,499 to £52,499.

        Frequently Asked Questions

        How many permanent API jobs are there in Wales?
        There are 4 permanent API jobs within 20 miles of Wales available on CWJobs right now.

        What other similar jobs are there to permanent API jobs in Wales?
        As well as permanent API jobs in Wales, you can find permanent Aws, Python, IT, amongst many others.