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        4 Permanent API jobs in Cardiff + 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

        19 exact matches jobs are outside your preferred location

        Senior Software Engineer (PHP, Typescript) - Trading

        Hargreaves Lansdown
        BS1, Bristol
        £60000 - £80000 per annum + Pension, Bonus etc
        Principles of RESTful API development, including structuring, documenting, versioning, testing and stubbing/mocking. * Third party API services integration experience.
        Principles of RESTful API development, including structuring, documenting, versioning, testing and stubbing/mocking. * Third party API services integration experience.
        more
        NEWFEATURED
        The Head of Application and Product Security is a strategic leadership role responsible for safeguarding the application landscape and digital products within HL. This pivotal position ensures that security is embedded throughout the software development lifecycle and product innovation pipeline, providing assurance to clients, regulators, and stakeholders during a period of significant digital transformation and on an ongoing basis. The role will champion secure-by-default/design principles, drive security best practices, and lead a high-performing team in the context of ambitious cloud adoption, agile delivery, and regulatory evolution. The role balances strategic vision with operational oversight, ensuring security resilience and enabling the firm's growth aspirations. What you'll be doing * Provide strategic leadership, direction and vision for all aspects of ...
        The Head of Application and Product Security is a strategic leadership role responsible for safeguarding the application landscape and digital products within HL. This pivotal position ensures that security is embedded throughout the software development lifecycle and product innovation pipeline, providing assurance to clients, regulators, and stakeholders during a period of significant digital transformation and on an ongoing basis. The role will champion secure-by-default/design principles, drive security best practices, and lead a high-performing team in the context of ambitious cloud adoption, agile delivery, and regulatory evolution. The role balances strategic vision with operational oversight, ensuring security resilience and enabling the firm's growth aspirations. What you'll be doing * Provide strategic leadership, direction and vision for all aspects of ...
        more
        NEWFEATURED

        Salesforce Architect

        Hireful
        Bristol, Avon
        Up to £90K Basic + 10% Bonus + Benefits package
        Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
        Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
        more
        NEWFEATURED
        Passion for clean code, API design, and maintainable architecture - Senior Software Engineer, Robotics, C++, Python, ROS 2, DDS, CUDA, PyTorch, TensorRT, Real-Time Systems, Embedded Systems, Low Latency, CI/CD, API Design, Linux Kernel, Multithreading, GPU Optimisation, Robotics Engineer, Autonomous Systems, London Engineering Jobs, Robotics Startups, High Performance Computing
        Passion for clean code, API design, and maintainable architecture - Senior Software Engineer, Robotics, C++, Python, ROS 2, DDS, CUDA, PyTorch, TensorRT, Real-Time Systems, Embedded Systems, Low Latency, CI/CD, API Design, Linux Kernel, Multithreading, GPU Optimisation, Robotics Engineer, Autonomous Systems, London Engineering Jobs, Robotics Startups, High Performance Computing
        more
        NEWFEATURED
        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)
        more
        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.
        more
        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

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        Software Engineer

        Oscar Associates (UK) Limited
        BS1, Bristol
        £350 - £450 per day
        We're looking for a versatile Software Engineer to join a leading Bristol-based business, delivering high-quality solutions for clients across finance, e-commerce, and technology. * Build and maintain software using C#/.NET, Python, JavaScript, React, Node.js, and TypeScript * Solid grounding in software engineering best practices - testing, design patterns, version control (Git). This is a hands-on role where you'll work across the full stack. Back-end services in C#/.NET and Python, and dynamic front-end applications using JavaScript, React, Node.js, and TypeScript. Location: Bristol (Hybrid) Contract: 6 Months (OIR35) Rate: £350-450 p/day - Start date: ASAP * Develop and optimise APIs, services, and integration layers. * Deliver end-to-end features across back-end, front-end, and cloud-hosted environments. * Write
        We're looking for a versatile Software Engineer to join a leading Bristol-based business, delivering high-quality solutions for clients across finance, e-commerce, and technology. * Build and maintain software using C#/.NET, Python, JavaScript, React, Node.js, and TypeScript * Solid grounding in software engineering best practices - testing, design patterns, version control (Git). This is a hands-on role where you'll work across the full stack. Back-end services in C#/.NET and Python, and dynamic front-end applications using JavaScript, React, Node.js, and TypeScript. Location: Bristol (Hybrid) Contract: 6 Months (OIR35) Rate: £350-450 p/day - Start date: ASAP * Develop and optimise APIs, services, and integration layers. * Deliver end-to-end features across back-end, front-end, and cloud-hosted environments. * Write
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        FEATURED

        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

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        What is the average salary for API in Cardiff?

        Average salary per year
        £42,499

        The average salary for a API in Cardiff is £42,499. API in Cardiff salaries range from £32,499 to £55,000.

        Frequently Asked Questions

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

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