Permanent 'API Development' Job Vacancies

126 to 150 of 492 Permanent API Development Jobs

Senior Python Developer

South West London, London, United Kingdom
Hybrid / WFH Options
Run-Time Group Ltd
paced, collaborative environment and grow your skills. Key Responsibilities: Develop and maintain scalable applications using Python (Django). Build and integrate APIs and third-party services. Participate in Agile development cycles and CI/CD processes. Optimize applications for performance and scalability. Collaborate with cross-functional teams. Requirements: Computer Science or STEM degree from a top Russell Group University … 1st or 2:1). 5+ years of full-stack development experience (Python/Django). Strong experience with SQL databases (PostgreSQL/MySQL). Familiarity with DevOps tools (Docker, Kubernetes, AWS/GCP/Azure). Experience with API development and Git. More ❯
Employment Type: Permanent, Work From Home
Posted:

Consultant Software Developer - Hybrid Working

Bedford, Bedfordshire, England, United Kingdom
Hybrid / WFH Options
Oliver James
scalable solutions from the ground up, and work closely with clients to solve meaningful business problems. You'll operate in small project teams (or sometimes independently), across the full development lifecycle from business requirements through to deployment and optimisation. Key Responsibilities Design, develop, and deliver high-quality software solutions in line with client needs and business goals Lead or … architecture, offering input into technology and design decisions Collaborate directly with clients to understand their operations and challenges Work across the full stack - backend through to frontend using modern development practices Take ownership of project delivery with an awareness of budgets and timelines Apply a problem-solving mindset and adapt quickly to different industries and business domains Core Technical … Skills Required C#/.NET (Core and Framework) strong backend development experience essential JavaScript and React for building responsive, user-friendly front-end applications Familiarity with API development (RESTful services) Experience with SQL Server and database integration Comfortable working in DevOps environments (CI/CD pipelines, version control, automated testing) Strong understanding of application architecture and scalable More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Consultant Software Developer - Hybrid Working

Crawley, West Sussex, England, United Kingdom
Hybrid / WFH Options
Oliver James
scalable solutions from the ground up, and work closely with clients to solve meaningful business problems. You'll operate in small project teams (or sometimes independently), across the full development lifecycle from business requirements through to deployment and optimisation. Key Responsibilities Design, develop, and deliver high-quality software solutions in line with client needs and business goals Lead or … architecture, offering input into technology and design decisions Collaborate directly with clients to understand their operations and challenges Work across the full stack - backend through to frontend using modern development practices Take ownership of project delivery with an awareness of budgets and timelines Apply a problem-solving mindset and adapt quickly to different industries and business domains Core Technical … Skills Required C#/.NET (Core and Framework) strong backend development experience essential JavaScript and React for building responsive, user-friendly front-end applications Familiarity with API development (RESTful services) Experience with SQL Server and database integration Comfortable working in DevOps environments (CI/CD pipelines, version control, automated testing) Strong understanding of application architecture and scalable More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Backend Software Engineer

City of London, London, United Kingdom
Albert Bow
systems using Python microservices, helping to scale fast and deliver real impact! What You’ll Do Build and maintain backend features with strong test coverage Contribute to architecture and API design Translate business needs into technical solutions Promote best practices in coding and DevOps Collaborate across teams to ship reliable, high-quality software What You’ll Bring 4+ years … of software development experience Strong skills in Python and API development Knowledge of microservices, CI/CD, and modern engineering practices Familiarity with SQL/NoSQL databases (Bonus) Frontend experience with JavaScript/TypeScript Apply directly or send your CV to cailacunningham@albertbow.com. Thanks, Caila More ❯
Posted:

Backend Software Engineer

London Area, United Kingdom
Albert Bow
systems using Python microservices, helping to scale fast and deliver real impact! What You’ll Do Build and maintain backend features with strong test coverage Contribute to architecture and API design Translate business needs into technical solutions Promote best practices in coding and DevOps Collaborate across teams to ship reliable, high-quality software What You’ll Bring 4+ years … of software development experience Strong skills in Python and API development Knowledge of microservices, CI/CD, and modern engineering practices Familiarity with SQL/NoSQL databases (Bonus) Frontend experience with JavaScript/TypeScript Apply directly or send your CV to cailacunningham@albertbow.com. Thanks, Caila More ❯
Posted:

Backend Software Engineer

london, south east england, united kingdom
Albert Bow
systems using Python microservices, helping to scale fast and deliver real impact! What You’ll Do Build and maintain backend features with strong test coverage Contribute to architecture and API design Translate business needs into technical solutions Promote best practices in coding and DevOps Collaborate across teams to ship reliable, high-quality software What You’ll Bring 4+ years … of software development experience Strong skills in Python and API development Knowledge of microservices, CI/CD, and modern engineering practices Familiarity with SQL/NoSQL databases (Bonus) Frontend experience with JavaScript/TypeScript Apply directly or send your CV to cailacunningham@albertbow.com. Thanks, Caila More ❯
Posted:

Backend Software Engineer

london (city of london), south east england, united kingdom
Albert Bow
systems using Python microservices, helping to scale fast and deliver real impact! What You’ll Do Build and maintain backend features with strong test coverage Contribute to architecture and API design Translate business needs into technical solutions Promote best practices in coding and DevOps Collaborate across teams to ship reliable, high-quality software What You’ll Bring 4+ years … of software development experience Strong skills in Python and API development Knowledge of microservices, CI/CD, and modern engineering practices Familiarity with SQL/NoSQL databases (Bonus) Frontend experience with JavaScript/TypeScript Apply directly or send your CV to cailacunningham@albertbow.com. Thanks, Caila More ❯
Posted:

Backend Software Engineer

slough, south east england, united kingdom
Albert Bow
systems using Python microservices, helping to scale fast and deliver real impact! What You’ll Do Build and maintain backend features with strong test coverage Contribute to architecture and API design Translate business needs into technical solutions Promote best practices in coding and DevOps Collaborate across teams to ship reliable, high-quality software What You’ll Bring 4+ years … of software development experience Strong skills in Python and API development Knowledge of microservices, CI/CD, and modern engineering practices Familiarity with SQL/NoSQL databases (Bonus) Frontend experience with JavaScript/TypeScript Apply directly or send your CV to cailacunningham@albertbow.com. Thanks, Caila More ❯
Posted:

MuleSoft Developer

City of London, London, United Kingdom
Hybrid / WFH Options
Advanced Resource Managers
desirable Your main responsibility will be to deliver clean, maintainable, and well-tested code that adheres to SOLID principles. You will work collaboratively across Quality Assurance, DevOps, and other development teams, sharing knowledge, supporting onboarding, and contributing to code reviews. Key Responsibilities Deliver high-quality, maintainable code and development outcomes. Manage data exchange between backend services, front-end … clear code comments. Ensure compliance with quality standards, including automated testing and code reviews. Address non-functional requirements such as performance, monitoring, and operational support. Support releases through all development environments, maintaining quality and reliability. Contribute to skill development and technology adoption within the team. Present technical concepts in demos and participate in user feedback sessions. Provide accurate … RAML, REST APIs, flow control, and error handling. Hands-on experience with the Anypoint Platform (CloudHub, VPC, VPN, DLB, firewalls, and cloud technologies). Securing and managing APIs using API Manager. Developing frameworks for error handling and logging. Managing the API development lifecycle from design to governance and management. Working with batch message processing, Salesforce, file, and More ❯
Posted:

MuleSoft Developer

London Area, United Kingdom
Hybrid / WFH Options
Advanced Resource Managers
desirable Your main responsibility will be to deliver clean, maintainable, and well-tested code that adheres to SOLID principles. You will work collaboratively across Quality Assurance, DevOps, and other development teams, sharing knowledge, supporting onboarding, and contributing to code reviews. Key Responsibilities Deliver high-quality, maintainable code and development outcomes. Manage data exchange between backend services, front-end … clear code comments. Ensure compliance with quality standards, including automated testing and code reviews. Address non-functional requirements such as performance, monitoring, and operational support. Support releases through all development environments, maintaining quality and reliability. Contribute to skill development and technology adoption within the team. Present technical concepts in demos and participate in user feedback sessions. Provide accurate … RAML, REST APIs, flow control, and error handling. Hands-on experience with the Anypoint Platform (CloudHub, VPC, VPN, DLB, firewalls, and cloud technologies). Securing and managing APIs using API Manager. Developing frameworks for error handling and logging. Managing the API development lifecycle from design to governance and management. Working with batch message processing, Salesforce, file, and More ❯
Posted:

MuleSoft Developer

South East, United Kingdom
Hybrid / WFH Options
Advanced Resource Managers
desirable Your main responsibility will be to deliver clean, maintainable, and well-tested code that adheres to SOLID principles. You will work collaboratively across Quality Assurance, DevOps, and other development teams, sharing knowledge, supporting onboarding, and contributing to code reviews. Key Responsibilities Deliver high-quality, maintainable code and development outcomes. Manage data exchange between backend services, front-end … clear code comments. Ensure compliance with quality standards, including automated testing and code reviews. Address non-functional requirements such as performance, monitoring, and operational support. Support releases through all development environments, maintaining quality and reliability. Contribute to skill development and technology adoption within the team. Present technical concepts in demos and participate in user feedback sessions. Provide accurate … RAML, REST APIs, flow control, and error handling. Hands-on experience with the Anypoint Platform (CloudHub, VPC, VPN, DLB, firewalls, and cloud technologies). Securing and managing APIs using API Manager. Developing frameworks for error handling and logging. Managing the API development lifecycle from design to governance and management. Working with batch message processing, Salesforce, file, and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

MuleSoft Developer

london, south east england, united kingdom
Hybrid / WFH Options
Advanced Resource Managers
desirable Your main responsibility will be to deliver clean, maintainable, and well-tested code that adheres to SOLID principles. You will work collaboratively across Quality Assurance, DevOps, and other development teams, sharing knowledge, supporting onboarding, and contributing to code reviews. Key Responsibilities Deliver high-quality, maintainable code and development outcomes. Manage data exchange between backend services, front-end … clear code comments. Ensure compliance with quality standards, including automated testing and code reviews. Address non-functional requirements such as performance, monitoring, and operational support. Support releases through all development environments, maintaining quality and reliability. Contribute to skill development and technology adoption within the team. Present technical concepts in demos and participate in user feedback sessions. Provide accurate … RAML, REST APIs, flow control, and error handling. Hands-on experience with the Anypoint Platform (CloudHub, VPC, VPN, DLB, firewalls, and cloud technologies). Securing and managing APIs using API Manager. Developing frameworks for error handling and logging. Managing the API development lifecycle from design to governance and management. Working with batch message processing, Salesforce, file, and More ❯
Posted:

MuleSoft Developer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Advanced Resource Managers
desirable Your main responsibility will be to deliver clean, maintainable, and well-tested code that adheres to SOLID principles. You will work collaboratively across Quality Assurance, DevOps, and other development teams, sharing knowledge, supporting onboarding, and contributing to code reviews. Key Responsibilities Deliver high-quality, maintainable code and development outcomes. Manage data exchange between backend services, front-end … clear code comments. Ensure compliance with quality standards, including automated testing and code reviews. Address non-functional requirements such as performance, monitoring, and operational support. Support releases through all development environments, maintaining quality and reliability. Contribute to skill development and technology adoption within the team. Present technical concepts in demos and participate in user feedback sessions. Provide accurate … RAML, REST APIs, flow control, and error handling. Hands-on experience with the Anypoint Platform (CloudHub, VPC, VPN, DLB, firewalls, and cloud technologies). Securing and managing APIs using API Manager. Developing frameworks for error handling and logging. Managing the API development lifecycle from design to governance and management. Working with batch message processing, Salesforce, file, and More ❯
Posted:

MuleSoft Developer

slough, south east england, united kingdom
Hybrid / WFH Options
Advanced Resource Managers
desirable Your main responsibility will be to deliver clean, maintainable, and well-tested code that adheres to SOLID principles. You will work collaboratively across Quality Assurance, DevOps, and other development teams, sharing knowledge, supporting onboarding, and contributing to code reviews. Key Responsibilities Deliver high-quality, maintainable code and development outcomes. Manage data exchange between backend services, front-end … clear code comments. Ensure compliance with quality standards, including automated testing and code reviews. Address non-functional requirements such as performance, monitoring, and operational support. Support releases through all development environments, maintaining quality and reliability. Contribute to skill development and technology adoption within the team. Present technical concepts in demos and participate in user feedback sessions. Provide accurate … RAML, REST APIs, flow control, and error handling. Hands-on experience with the Anypoint Platform (CloudHub, VPC, VPN, DLB, firewalls, and cloud technologies). Securing and managing APIs using API Manager. Developing frameworks for error handling and logging. Managing the API development lifecycle from design to governance and management. Working with batch message processing, Salesforce, file, and More ❯
Posted:

Software Developer

Saint Louis, Missouri, United States
ALTA IT Services
Clearance: Active Top Secret clearance required (with the ability to upgrade to a CI Poly) Compensation: $120,000 - $150,000 (depending on experience) Job Responsibilities: This position involves software development activities that support building and delivering new and innovative software solutions to Aeronautical based applications. Duties will include building AWS services, deep understanding of software languages (C#/Java … Python, Shell), participate in Agile Methodology, perform deployments to multiple development, test and operational environments, patching, troubleshooting, and working with internal teams and departments. Core Qualifications: The applicant must possess a deep understanding of core AWS services, like compute, storage and be able to develop and deploy cores services (Lambda, EC2s) C#/Java and JavaScript/TypeScript, Python … new and existing functionality within software version control repositories (Gitlab) and utilizing DevOps principals and tools to deliver new features within an Agile construct Participate in program Agile software development initiatives (standup, planning, Increment planning) to support innovation and enhancement of custom applications through iteration/functionality testing utilizing Atlassian (Jira/Confluence) Primary responsibilities will involve using cloud More ❯
Employment Type: Permanent
Salary: USD 150,000 Annual
Posted:

Software Engineer - Pensions, ISA & Investments

Bristol, Avon, South West, United Kingdom
Hybrid / WFH Options
Hargreaves Lansdown
security, performance and CI/CD processes. Responsible for documenting all solutions, produced to agreed team standards. Demonstrate a willingness to learn and further technologies & techniques embraced by the development team. Cultivate strong working relationships within the squad across Product and Engineering. Participating in working groups and communities of practice designed to support the development team. Continually develop … tools and practices (e.g. Jest, Cypress, Backstop). Enjoys learning - you prioritise growing knowledge Experience with CI/CD and Trunk Based Development. Understanding of Microservices & principles of RESTful API development, including structuring, documenting, versioning, testing and stubbing/mocking. Experience performing code reviews. Experience operating within Agile framework. Aware of website performance implications, best practices and other … non-functional requirements. Able to assist in writing or reviewing technical documentation. Advocate of excellent development practices to optimise for rapid and continuous delivery of client value. React Native, GraphQL, DevOps and event driven architecture experience beneficial Skills/Attributes Excellent collaborator, naturally works well with others across different disciplines in a cross functional team. Excellent communicator (written and More ❯
Employment Type: Permanent, Part Time, Work From Home
Salary: £65,000
Posted:

GenAI Python Developer x4

London Area, United Kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Posted:

GenAI Python Developer x4

City of London, London, United Kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Posted:

GenAI Python Developer x4

South East, United Kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

GenAI Python Developer x4

london, south east england, united kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Posted:

GenAI Python Developer x4

london (city of london), south east england, united kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Posted:

GenAI Python Developer x4

slough, south east england, united kingdom
Hybrid / WFH Options
EMBS Technology
environments with tight security controls Experience integrating AI or ML services into real-world applications Knowledge of authentication, secret management, networking, and model access governance Bonus Points For: Kong API Gateway, Kong Mesh, Flux CD AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock RESTful API development with FastAPI, microservices, Terraform, GitOps workflows Prompt evaluation tools such as More ❯
Posted:

Senior Backend Developer

Manchester, United Kingdom
The Portfolio Group
/BDD principles Create and maintain RESTful and GraphQL APIs Collaborate with POs, BAs, and stakeholders to define solutions Mentor junior developers and promote best practices Drive improvements in development processes and tools What You Bring 5+ years of backend development experience Expertise in C#, .NET (preferably .NET 6+), and SQL Server Deep understanding of SOLID and OOP … principles Skilled in Git, Unit Testing (NUnit), and API development Familiarity with CI/CD pipelines and agile methodologies Strong communication and problem-solving skills Desire to grow within a dynamic and evolving team Why Join? This is an incredible opportunity to make your mark in a company that prioritises purpose, innovation, and professional growth. You'll be … part of a team where your ideas are welcomed, your development is encouraged, and your work truly matters. Ready to build something that helps others-and builds your career in the process? Apply today. 48954MSR2 INDMANS More ❯
Employment Type: Permanent
Salary: £70000/annum
Posted:

Lead Software Engineer, Java Microservices

London, South East, England, United Kingdom
Hybrid / WFH Options
Salt Search
testing, and implementing modern microservices-based applications running in the public cloud. This is a hands-on position within a feature team that works collaboratively across the full software development lifecycle. What You'll Be Doing Designing, producing, testing, and implementing high-quality software across the system lifecycle Working within a permanent feature team focused on delivering business-critical … in a fast-paced Agile environment (two-week sprints) Collaborating with architects, principal engineers, and key stakeholders to align technical solutions with business objectives Applying Agile and Test-Driven Development (TDD) principles to build resilient, fast-running, and maintainable code Building and maintaining API-driven Java microservices hosted on public cloud infrastructure Contributing to intentional architecture while supporting … Proven ability to design and deliver well-tested, production-ready software with strong focus on functional and non-functional requirements Deep understanding of microservices architecture , cloud-native applications, and API development Experience with distributed systems - managing workloads at scale using modern practices for availability, performance, and observability Knowledge and experience with Test-Driven Development (TDD) and automated More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Full Stack Engineer

Birmingham, West Midlands, United Kingdom
Searchstone Ltd
kicking off their search for the next one! Key technologies are as follows: Proficiency in scripting languages such as TypeScript and JavaScript Experience with React and Next.js for frontend development Familiarity with Node.js API development using frameworks like Fastify, Express Experience using API testing tools such as Postman or Bruno Exposure to document and relational databases More ❯
Employment Type: Permanent
Salary: £50,000
Posted:
API Development
10th Percentile
£46,500
25th Percentile
£52,400
Median
£65,000
75th Percentile
£81,250
90th Percentile
£92,500