101 to 125 of 188 API Development Jobs

Python Developer - Telecom Automation

Hiring Organisation
Hamilton Barnes
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 400 Daily
systems and APIs for validation, monitoring and health checks. Collaborate with QA, Network Engineering and DevOps teams. Essential Skills 4+ years of professional Python development experience. Strong Flask/FastAPI and REST API development experience. Experience with PostgreSQL/MySQL and MongoDB/Redis . Strong Linux ...

Lead Software Engineer / Technical Lead (Python & Django)

Hiring Organisation
NonStop Consulting
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £720/day
Technical Leads) Mentor developers and provide technical leadership across squads Essential Skills Strong commercial experience with Python Excellent hands-on experience with Django REST API development System design and software architecture experience Agile delivery experience Test-Driven Development (TDD) Cloud platform experience (AWS, Azure or GCP) Excellent ...

.NET Core Developer Fintech SQL- Guildford

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 80 K
Tech: C#, ASP.NET MVC 5, SQL, Anngular.JS Web API CFChallenge: Greenfield Automated Data platform, API development, industry specific challengesFirm: Well-known digital mapping solutions, Guildford , 20 man flat Dev TeamPay: 60k, Bonus- 750 training budget, Pension, Life/Health, Some Flex Working.NET Core Developer Fintech SQLQuant Capital … GuilfordCommutable fromCamberley Godalming Guildford Bracknell Dorking Reigate Petersfield Croydon Reigate Leatherhead Richmond Epsom “South London” Esher WokingGreenfield. C# Lead Software Developer, .Net Senior Developer, Development Lead, Technical Lead, Lead Application Developer Fullstack (web technologies, HTML, JQuery, AngularJS, SQL Server, C#, API ...

Senior Data Scientist - Biostatistics

Hiring Organisation
develop
Location
London Area, United Kingdom
life sciences and pharmaceutical organisations modernise and scale their statistical modelling capabilities. This role combines statistical expertise with modern data engineering practices, enabling the development of robust, reproducible, and production-ready analytical solutions. You'll work closely with biostatisticians, data scientists, and technical stakeholders to improve modelling approaches … complex statistical concepts into practical business and technical solutions Skills & Experience Essential Strong statistical background, ideally within Biostatistics Advanced R programming skills, including package development Experience with Git and collaborative development workflows Knowledge of CI/CD pipelines, automated testing, and software engineering best practices Strong understanding ...

Senior AI Engineer Manager/Associate Director Capital Markets

Hiring Organisation
Datatech Analytics
Location
London, United Kingdom
Employment Type
Permanent
Applied AI engineering, ML engineering or software engineering background Experience with LLMs, RAG, embeddings, prompt engineering or fine tuning Exposure to LangChain, LangGraph, Agent Development Kit or similar agent frameworks Experience with vector databases such as Pinecone, Chroma or similar API development experience, ideally with FastAPI ...

Senior AI Engineer Manager/Associate Director Capital Markets

Hiring Organisation
Datatech Analytics
Location
Edinburgh, Midlothian, Scotland, United Kingdom
Employment Type
Permanent
Applied AI engineering, ML engineering or software engineering background Experience with LLMs, RAG, embeddings, prompt engineering or fine tuning Exposure to LangChain, LangGraph, Agent Development Kit or similar agent frameworks Experience with vector databases such as Pinecone, Chroma or similar API development experience, ideally with FastAPI ...

Senior AI Engineer Manager/Associate Director Capital Markets

Hiring Organisation
Datatech Analytics
Location
Manchester, North West, United Kingdom
Employment Type
Temporary
Applied AI engineering, ML engineering or software engineering background Experience with LLMs, RAG, embeddings, prompt engineering or fine tuning Exposure to LangChain, LangGraph, Agent Development Kit or similar agent frameworks Experience with vector databases such as Pinecone, Chroma or similar API development experience, ideally with FastAPI ...

Cloud Engineer

Hiring Organisation
Economist Group
Location
London, United Kingdom
Salary
£ 80 K
develop threat modelsPerforming security control audits and coordinating with other teams within the organization to implement the outcomes of security controlsSkills:Cloud Security and Development (AWS a prerequisite)Understanding and experience with CICD and secure CICD best practices (CircleCI)Vulnerability Mgmt tooling (code scanning, IaC)Security expertise in cryptography … exploit developmentStrong investigative and analytical problem solving skills.Experience with secure architecture design. Strong communication skills, both written and spoken.Penetration testing experience.Proficient in software development, auditing code and features.Experience with SQL and API development best practices is a plus.Qualifications:Bachelor's or Master's degree in Computer Science ...

.NET Developer, C#, React, Hybrid

Hiring Organisation
Sanderson
Location
Cambridge, Cambridgeshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
Inside IR35) Contract: Initial 6 Months- Likely extensions We're working with a leading organisation that is investing heavily in the development and enhancement of its digital platforms. As part of this growth, we're looking for an experienced .NET Developer to join a collaborative engineering team and contribute … delivery of modern, scalable applications used across the business. This is an excellent opportunity for a developer who enjoys working across the full software development lifecycle, from designing and building new features through to maintaining and improving existing applications. You'll work closely with developers, architects, product teams ...

DevOps Engineer

Hiring Organisation
HCLTech
Location
London Area, United Kingdom
sign-off Your Skills and Experience Core Java Skills - Good understanding of Java fundamentals including object-oriented programming, collections, exception handling and concurrency. Integration, API Development and Databases - Experience building and deploying event-driven and RESTful APIs, with foundational knowledge of SQL and relational database design Infrastructure ...

Senior Data Engineer

Hiring Organisation
SCOR Global Life
Location
London, United Kingdom
Salary
£ 80 K
diversity of talents, and all positions are open to people with disabilities.Several years of experience as a data engineer, data oriented mindsetProven experience in development and maintenance of data pipelines, preferably in agile projects (Scrum and/or Kanban)Good knowledge of the Lloyds of London MarketTechnical Skills :Strong … Power BI/MDX/DAXGood knowledge in Python, PysparkExperience with Databricks and/or Palantir Foundry is a strong plusKnowledge of REST API development is a plusBehavioral & Management Skills :Strong analytical thinking, rigorous mindset solution-oriented and force of proposalTeam player, commitment, curiosity, interest to challengeCapacity ...

.Net Core Engineer

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 80 K
Tech: .Net Core, Blockchain Challenge: Greenfield Blockchain platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 30 man flat Dev Team Pay: 80k, Bonus- training budget, Pension, Life/Health, Some Flex Working.NET Core Engineer Fintech BlockchainQuant Capital is urgently looking … .NET Core Developer to join our high profile client.Small iterative releases over large releases Automated testing over manual testing Development team testing culture over testing is a separate function Upfront team acceptance criteria over tests derived from the specificationOur client is a well known financial market data provider ...

C# Software Engineer

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 100 K
Tech: C#, SQL, MVC, WPF, .net coreChallenge: Greenfield Insurance platform, API development, industry specific challengesFirm: Well-known Insurance Trading Platform Vendor, City of London, 30 man flat global Dev TeamPay: 80k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingC# Software Engineer Quant Capital is urgently … C# Developer to work for our high profile Lloyds of London insurer.This is an opportunity for an individual with a strong software development background. The applicant will be responsible for design, development and maintenance of my clients main pricing analytical library in C#.This varied role is based ...

Principal Business Analyst, Investment Technology

Hiring Organisation
Invesco
Location
Oxfordshire, United Kingdom
Employment Type
Full Time
education in the techniques and tools of data science and deep data analysis • Have knowledge of the capabilities of AWS services, Microservices (Kubernetes, Docker), API Development and DevOps, or a willingness to undertake training in these areas • Bachelor's Degree in Management Information Systems or Computer Science ...

Senior AI Engineer Python LLM - Finance Consultancy

Hiring Organisation
Client Server
Location
London, United Kingdom
Salary
£ 80 K
2.1 or above bachelor's degree in Computer Science, AI or related STEM disciplinesYou have a strong Python software engineering background including and API developmentYou have hands-on experience deploying LLMs and multi-modal models at scale in productionYou have a strong understanding of scalable MLOps, observability and cloud ...

C# Developer- Remote

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 80 K
Tech: C# 5, .net core AWS, Angular.JS, Bootstrap, Docker Challenge: Greenfield Financial platform, API development, industry specific challengesFirm: Well-known fintech50 business, City of London, 30 man flat Dev TeamPay: 50k, Bonus- training budget, Pension, Life/Health, Some Flex Working*This role is fully remote until … looking for a C# developer who wants to work in a tech driven bleeding edge business creating truly greenfield products.Working within the Development team the C# Developer will helping to introduce a new architecture as well as creating new products.C# Developers MUST have:Degree ideally Comp SciC#SQLIdeally .Net coreOO ...

Junior C# Developer

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 70 K
Tech: C# 5, .net core AWS, Angular.JS, Bootstrap, Docker Challenge: Greenfield Financial platform, API development, industry-specific challengesFirm: Well-known fintech50 business, City of London, 30 man flat Dev TeamPay: 50k, Bonus- training budget, Pension, Life/Health, Some Flex Working*This role is fully remote until … looking for a C# developer who wants to work in a tech driven bleeding edge business creating truly greenfield products.Working within the Development team the C# Developer will helping to introduce a new architecture as well as creating new products.C# Developers MUST have:Degree ideally Comp SciC#SQLIdeally .Net coreOO ...

Principal Information Architect – Metadata Thought Leadership

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
Step into the role of a Principal Information Architect (Executive Director) at JPMorganChase and become a promoting force behind the development and adoption of cutting-edge, cloud-based technologies. Make metadata real, usable, and impactful in modern engineering. In this role, you’ll sit at the intersection of Information … influence direction through thought leadership (not people management), partnering with stakeholders to drive standards and adoption. You will help ensure models and metadata support development practices and regulatory asks in a clear, implementable way.This could suit a strong Information Architect with metadata experience and an interest in software development ...

Junior C# Software Engineer

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 70 K
Tech: C#, SQL, ASP.NET, WinformsChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Fintech Trading Platform Vendor, City of London, 30 man flat global Dev TeamPay: 50k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingJunior C# Software EngineerQuant Capital is urgently looking … business. They provide valuations and pricing of derivatives to most of the buy side.This is an opportunity for an individual with a junior software development background. The applicant will be responsible for design, development and maintenance of my clients main pricing analytical library in C# Full training will ...

Principal Engineer - Mobile - London

Hiring Organisation
Photon Infotech
Location
London, United Kingdom
Salary
£ 80 K
desirableStay abreast of emerging technologies and industry trends, evaluating their potential impact and advocating for them to be included on the product roadmap and development processesChampion continuous improvement, performance optimisation, and security throughout the development lifecycleSkills:Proven experience as a hands-on engineer with proficiency in KotlinHands … experience in backend API development using Node.js will be an advantageExperience in technical decision making guiding the team to propose solutions which implement standard mythologies so that a maintainable product is producedStrong leadership skills with the ability to inspire and mentor other engineersExperience working in the Quick Service ...

Platform Application Specialist

Hiring Organisation
SQUAREPOINT CAPITAL
Location
London, United Kingdom
Salary
£ 100 K
self-service enablement.Required Qualifications:Degree in Engineering, Computer Science, or a related field.4+ years of experience in DevOps, SRE, or platform engineering roles.Software development experience with Python.Experience with system administration and troubleshooting (Linux, Bash, Containerization).Infrastructure automation and configuration management experience (e.g., Ansible, Terraform, Puppet).Nice to have:Deep … .Familiarity with specific middleware (e.g., Kafka, Consul), HPC schedulers (e.g., Slurm), Kubernetes, or workflow orchestrators (e.g., Airflow, Prefect).Experience with on-premise deployments of development tools like GitLab, Artifactory, CICD, or JupyterHub.Knowledge of other programming languages such as Golang, Rust, or JavaScript.Experience with advanced software engineering concepts, API ...

Backend Software Engineer C# .Net - Sports Trading

Hiring Organisation
Client Server
Location
London, United Kingdom
Salary
£ 120 K
team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City … office on a fulltime basis, Monday to Friday. About you:You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/ReactYou have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data ...

Software Engineer C# .Net - Sports Trading

Hiring Organisation
Client Server
Location
London, United Kingdom
Salary
£ 80 K
team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js.Location: You'll be based in plush City office … fulltime basis, Monday to Friday.About you:You have strong C# .Net, ASP.Net development experienceYou have a strong knowledge of databases (SQL or Oracle)You're comfortable with JavaScript/ReactYou have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, AlgorithmsYou are collaborative with ...

Backend Software Engineer C# .Net SQL - Sports Trading

Hiring Organisation
Client Server
Location
London, United Kingdom
Salary
£ 80 K
team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js.Location: You'll be based in plush City office … fulltime basis, Monday to Friday.About you:You have strong C# .Net, ASP.Net development experienceYou have a strong knowledge of databases (SQL or Oracle)You're comfortable with JavaScript/ReactYou have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, AlgorithmsYou are collaborative with ...

Staff Software Engineer, Labs Science

Hiring Organisation
Google
Location
London, United Kingdom
Salary
£ 80 K
iterate on features that genuinely delight the scientific community.Minimum qualifications:Bachelor’s degree or equivalent practical experience.8 years of experience in full-stack software development using languages such as C++, Java, Kotlin, and Typescript.3 years of experience with front-end frameworks, full-stack development, or API development.1 … support Google’s core mission. The Language Applications team manages a portfolio, including high-profile launches such as AI Studio, NotebookLM and the Gemini API for developers.Labs Science is a new initiative within Language Applications. In partnership with Google DeepMind (GDM), we transform breakthrough research—such as Co-Scientist ...