101 to 125 of 136 API Development Jobs

Senior AI Engineer

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
architects and data teams, you will turn conceptual designs into robust, production-grade software using Amazon Bedrock and modern Python frameworks. Key Responsibilities · Agent Development: Build and deploy sophisticated AI agents using Python, LangChain, and LangGraph. Implement tool calling (function calling), memory persistence, and error-handling logic for robust …/CD pipelines for AI models and manage prompt versioning and evaluation metrics. Technical Skills & Requirements · Programming: Expert proficiency in Python (Pydantic, AsyncIO, API development with FastAPI/Flask). · AWS AI Stack: Hands-on experience with Amazon Bedrock APIs, SageMaker (Training Jobs, Inference Endpoints), and Vector Databases. ...

Full Stack Engineer (AI Startup)

Hiring Organisation
Oliver Bernard
Location
United Kingdom
performing international team Ideal Background – B2B SaaS experience and startup mindset – 6+ years full-stack experience, can build end-to-end features – Proven REST API development with Python – Strong React + TypeScript skills – Bonus: Production level LLM integration experience – Work independently in a small, senior team, shaping architecture ...

Laravel Developer

Hiring Organisation
Proactive Appointments
Location
Sheffield, Yorkshire, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
VueJS framework and its ecosystem is highly desirable Competent with Git for source control. Understanding of MySQL, HTML, CSS, JavaScript Agile Methodologies Any RESTful API development useful Excellent Communication skills If this could be your next career move within an expanding employee-centric company, please drop across your ...

Asset Management Specialist

Hiring Organisation
SRMD Ltd
Location
United Kingdom
stakeholders to gather requirements and translate them into technical solutions Troubleshoot and resolve platform issues, ensuring optimal performance Required Skills: Strong experience in ServiceNow development and administration Hands-on expertise in ITSM, ITOM, HRSD, CMDB, Asset Management, PPM/SPM, and GRC modules Proficiency in JavaScript (ServiceNow scripting … good knowledge of Java Experience with databases like Oracle and MySQL Knowledge of REST/SOAP integrations and API development Strong problem-solving and communication skills ...

Full Stack Engineer

Hiring Organisation
Inara
Location
Leeds, England, United Kingdom
native platform within a secure, regulated environment . The Role You’ll be: Building backend services using C#/.NET Core Contributing to frontend development ( React or similar frameworks ) Working within a cloud-native Azure environment Collaborating with product, design, and engineering teams Supporting delivery within a client-facing … experience with C#/.NET Core Experience with modern frontend frameworks (React preferred) Experience working within Azure or cloud-native environments Solid understanding of API development and microservices Comfortable working in fast-paced, delivery-focused teams Active SC clearance OR eligible for SC clearance Why Join: Opportunity ...

Lead C# IoT & Cloud Software Engineer

Hiring Organisation
Jobleads-UK
Location
Oxford, England, United Kingdom
technology company in Oxford is seeking a Senior Software Engineer to lead the development of IoT device and cloud platform software. The role involves developing and maintaining C# codebases, API development, and collaboration with technical teams. Ideal candidates will have 8 years of C# experience, familiarity with ...

Senior Lead Analyst - Data Science - Machine Learning & Gen AI - UK

Hiring Organisation
Infosys
Location
Chester, England, United Kingdom
seeking a Senior AI/ML & Generative AI Engineer with deep expertise in designing, developing, and deploying advanced AI solutions. This includes core Python development using OOPs concepts, Large Language Models (LLMs), and Agentic AI architectures. The ideal candidate will collaborate with clients to understand complex business challenges, architect … Markets. Your Role As a Senior Lead Analyst, you will: •Anchor the engagement effort from business process consulting and problem definition to solution design, development, and deployment. •Lead the discovery and definition of AI/ML solutions and guide teams on project processes and deliverables. •Act as a thought ...

Hubspot Integration Specialist - Edinburgh/Hybrid/Remote Flex

Hiring Organisation
Lorien
Location
Edinburgh, Stockbridge, City of Edinburgh, United Kingdom
Employment Type
Permanent
Salary
£55000 - £65000/annum Hybrid, Remote, Progression, Trainin
ongoing supported opportunities for both upskilling and career progression, and a lot more. Role Snapshot: This post offers a great mix of CRM architecture, API development, strategic automation and systems thinking; ensuring seamless data flow, scalable automation and reliable system interoperability across the organisation's marketing, sales, customer … bring to the table: Demonstrable record of working with Hubspot in a technical hands-on capacity Strong understanding of Hubspot APIs and custom app development Track record of integrating SaaS platforms (CRM/ERP/marketing automation/billing tools/etc.) Hands-on skills across ...

Senior Backend Engineer

Hiring Organisation
CV Bay Ltd
Location
B2 4QA, Birmingham, West Midlands (County), United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum Up to £70,000 per annum
user interviews to understand real customer needs Make architecture and technical decisions, taking ownership of the solutions you build Requirements: Significant experience in backend API development (REST/JSON-RPC) Strong database design and architecture knowledge (SQL and/or NoSQL) Experience integrating third-party services, cloud platforms ...

AI Software Developer

Hiring Organisation
Thomas Professional
Location
Cirencester, Gloucestershire, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £75,000 per annum
experience writing high-quality Python in a commercial environment • Hands-on experience working with large language models (OpenAI, Anthropic, Mistral, or similar) • Familiarity with API development and modern software architecture • Understanding of prompt design and managing AI-generated outputs • Ideally have experience in RAG pipelines and vector databases ...

Software Engineering Lead

Hiring Organisation
VIQU IT Recruitment
Location
Northampton, Northamptonshire, UK
Employment Type
Full-time
pivotal point in their growth, having an influence over the technical strategy whilst remaining hands. Experience required: Strong background in modern .NET/C# development & architecture. A track record of leading and mentoring teams of engineers. Cloud experience across Azure & AWS. Experience with Angular framework, REST APIs … API development. Experience with testing frameworks and quality engineering practices (unit & integration testing and test driven development). SpecFlow for Behaviour-Driven Development and Postman for API testing. Experience building and maintaining CI/CD pipelines. Knowledge of Docker and containerised applications. Hands on experience with ...

Software Engineering Lead

Hiring Organisation
VIQU IT
Location
Milton Keynes, Fenny Stratford, Buckinghamshire, United Kingdom
Employment Type
Permanent
Salary
£80000 - £85000/annum
pivotal point in their growth, having an influence over the technical strategy whilst remaining hands. Experience required: Strong background in modern .NET/C# development & architecture. A track record of leading and mentoring teams of engineers. Cloud experience across Azure & AWS. Experience with Angular framework, REST APIs … API development. Experience with testing frameworks and quality engineering practices (unit & integration testing and test driven development). SpecFlow for Behaviour-Driven Development and Postman for API testing. Experience building and maintaining CI/CD pipelines. Knowledge of Docker and containerised applications. Hands on experience with ...

Senior Technical Lead (AI & Data Platform)

Hiring Organisation
Brightsmith
Location
Oxford, England, United Kingdom
Help shape the long-term engineering team and technical roadmap Experience Requires- Senior Technical Lead 5+ years software engineering experience Strong Python backend and API development Experience building production systems in startups or fast-moving environments Experience with data-heavy platforms or analytics products Interest in AI, modelling ...

C# Senior Software Developer

Hiring Organisation
Adria Solutions
Location
Manchester, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 Annual
lead projects, mentor junior developers, and work on high-impact, secure banking solutions. You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment click apply for full job details ...

Senior ML Systems Architect: Scalable AI Platform

Hiring Organisation
Jobleads-UK
Location
Bristol, England, United Kingdom
successful candidate will bridge research and commercial deployment, focusing on performance, reliability, and maintainability. Key qualifications include expertise in TensorFlow and Python, experience in API development, and familiarity with MLOps practices. Joining means working on cutting-edge ML solutions and collaborating with experts across various fields. #J ...

Java Developer

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 per day
seeking a skilled Java Developer to join our engineering team and contribute to the design, development, and maintenance of high-quality, scalable software solutions. The ideal candidate has strong experience in core Java, modern frameworks, API development, and cloud-based architectures. You will work closely with product ...

Senior Software & Data Engineer

Hiring Organisation
Adentis Portugal
Location
Lisboa, Portugal
Employment Type
Permanent
Salary
EUR Annual
routine; Health benefits (for you and your family); Team Building activities; Over 300 protocols to offer you great discounts in different areas; Continuous professional development sponsored by our Training and Certification Department; Regular feedback on your performance through a personalized plan; Comprehensive career plan and progression involving assertive performance … reviews. Responsibilities: Lead technical discussions and actively participate in development, with a particular focus on Spring Boot, Azure SQL, Azure DevOps, and Databricks/Scala/Spark. Support and drive architectural efforts, including High-Level Design (HLD) and Domain-Driven Design (DDD). Develop microservices, RESTful APIs, and ensure ...

GenAI Specialist

Hiring Organisation
Velocity Talent Ltd
Location
Bromley, London, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £550 per day £500 TO £550 A DAY inside IR35
hybrid 8-12 month contract paying £500 - £550 per day inside IR35, (2-3 days in the office) This includes core Python development using OOPs concepts, Large Language Models (LLMs), and Agentic AI architectures. The ideal candidate will collaborate with clients to understand complex business challenges, architect scalable … Capital Markets. As a Senior Lead Analyst, you will: Anchor the engagement effort from business process consulting and problem definition to solution design, development, and deployment. Lead the discovery and definition of AI/ML solutions and guide teams on project processes and deliverables. Act as a thought leader ...

Senior Software Engineer

Hiring Organisation
Bright Purple Resourcing
Location
United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
Salary up to £80,000 33 days annual leave Pension & healthcare A role with genuine social impact A supportive, mission-driven workplace Professional development and clear career progression Key Responsibilities Lead the design, development, and delivery of modern, web-based applications Improve codebases, development practices, and deployment … effective systems About You Extensive experience with C#, .NET, and SQL Strong expertise in Azure and Azure cloud adoption frameworks Proven track record in API developmentand modern system architectures At least 3 years experience in a leadership role Strong problem-solving skills and ability to perform under pressure Hands ...

Senior Software Engineer

Hiring Organisation
Bright Purple Resourcing
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
Salary up to £80,000 33 days annual leave Pension & healthcare A role with genuine social impact A supportive, mission-driven workplace Professional development and clear career progression Key Responsibilities Lead the design, development, and delivery of modern, web-based applications Improve codebases, development practices, and deployment … effective systems About You Extensive experience with C#, .NET, and SQL Strong expertise in Azure and Azure cloud adoption frameworks Proven track record in API developmentand modern system architectures At least 3 years experience in a leadership role Strong problem-solving skills and ability to perform under pressure Hands ...

Senior Software Engineer

Hiring Organisation
Bright Purple Resourcing
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
Salary up to £80,000 33 days annual leave Pension & healthcare A role with genuine social impact A supportive, mission-driven workplace Professional development and clear career progression Key Responsibilities Lead the design, development, and delivery of modern, web-based applications Improve codebases, development practices, and deployment … effective systems About You Extensive experience with C#, .NET, and SQL Strong expertise in Azure and Azure cloud adoption frameworks Proven track record in API developmentand modern system architectures At least 3 years experience in a leadership role Strong problem-solving skills and ability to perform under pressure Hands ...

Senior Software Engineer

Hiring Organisation
Bright Purple Resourcing
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
Salary up to £80,000 33 days annual leave Pension & healthcare A role with genuine social impact A supportive, mission-driven workplace Professional development and clear career progression Key Responsibilities Lead the design, development, and delivery of modern, web-based applications Improve codebases, development practices, and deployment … effective systems About You Extensive experience with C#, .NET, and SQL Strong expertise in Azure and Azure cloud adoption frameworks Proven track record in API developmentand modern system architectures At least 3 years experience in a leadership role Strong problem-solving skills and ability to perform under pressure Hands ...

Integration Architect

Hiring Organisation
Pontoon
Location
Warwick, Warwickshire, United Kingdom
Employment Type
Contract
Contract Rate
£900 - £950/day
CDE. Strong understanding of data exchange mechanisms and system interoperability. Experience in managing configurations across diverse tools to ensure compliance and efficiency. Familiarity with API development and information management principles, including ISO 19650. Excellent communication and stakeholder management skills. Qualifications: Bachelor's degree in computer science, Information Technology ...

Java FullStack Developer

Hiring Organisation
Decskill
Location
Lisboa, Portugal
Employment Type
Permanent
Salary
EUR Annual
main mission is to deliver value through knowledge and talent, and we achieve this by fostering a culture of excellence and investing in the development and well-being of our people. With over 600 dedicated professionals and offices in Lisbon, Porto, Madrid, and Luxembourg, Decskill operates across three core … Expertise in Spring Boot 3, Maven, and Git ; 3+ years of experience with Angular , preferably with knowledge of the latest versions; Experience in RESTful API design and development ; Familiarity with Continuous Integration tools such as Jenkins, XL Deploy, and XL Release; Knowledge of Microservices architecture ; Experience with ...

Full Stack Developer

Hiring Organisation
Horwich Farrelly
Location
Salford, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Collaborate with stakeholders and product owners to understand requirements and deliver solutions. Participate in code reviews, testing, and continuous improvement initiatives. Contribute to the development of our AI-driven product suite, including ELI. Occasionally engage with clients or internal teams to understand needs and provide technical guidance. What … looking for: Essential Skills: Strong experience in C# for backend/API development. Proficiency in JavaScript/TypeScript , with exposure to frameworks such as Angular (front-end) and Node.js (backend). Ability to adapt quickly and learn new technologies as needed. Solid understanding of software development principles ...