51 to 75 of 99 API Development Jobs in London

Smart Buildings Commissioning Engineer

Location
Greater London, England, United Kingdom
values, rather than transactional relationships. Alongside actively working to support the raising of standards in training and professional qualifications, we invest heavily in the development of our people. We give them access to continuous learning opportunities, leading to the freedom of working autonomously and making their own informed decisions … Buildings Commissioning Engineer, you will play a key role in the delivery of Master Systems Integration (MSI) projects, with a particular focus on software development, data integration, data input, testing, and commissioning of smart building systems. Working under the guidance of the Technical Services Manager, you will support ...

Lead Agentic AI Engineer

Location
City Of London, England, United Kingdom
seeking a highly skilled and innovative Lead Agentic AI Engineer to join our team and drive the design, development, and deployment of production‐grade generative AI and agentic solutions using Microsoft technologies. This role is ideal for a technically strong engineer who has hands‐on experience building AI solutions … Agent Framework Proficient in Python and production‐quality code practices Strong understanding of software engineering principles, architecture patterns, and delivery best practices Experience with API development using frameworks such as FastAPI, Flask, or Django Knowledge of Docker, containerised deployments, CI/CD, and cloud‐native delivery patterns What ...

Senior Software Engineer (Java)

Location
Greater London, England, United Kingdom
define and oversee the technical implementation of a client project We\'d love to talk to you if You have strong knowledge of API development using Java, including ORM storage You actively facilitate and encourage knowledge sharing within the team and wider department You advocate for best engineering ...

Software Engineer, Platform London, UK Apply →

Location
Greater London, England, United Kingdom
growth startups. Familiarity with LLMs, vector databases, embeddings, or other modern AI tooling (tinkering or production experience welcome). Proficiency with SQL and modern API development. Experience with Kubernetes, containerization, and microservice architectures. Experience working with at least one major cloud provider (AWS, GCP, or Azure). We believe ...

Full Stack Engineer

Hiring Organisation
Response Informatics
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Application Development & Integration Full-stack software engineering expertise across Java, Python, .NET, JavaScript/TypeScript, Node.js, React, Angular, and modern web technologies. Deep experience in API development, Microservices, Event-Driven Architectures, Enterprise Integration, and Distributed Systems design. . click apply for full job details ...

Python Developer - Agentic AI / GenAI - Investment Banking

Location
Greater London, England, United Kingdom
Engineer to join a consulting engagement delivering Agentic AI and Generative AI solutions within an Investment Banking environment . This is a hands‐on development role requiring strong Python engineering alongside proven commercial experience building Agentic AI, LLM and RAG solutions . Key Skills Strong commercial Python development Hands‐on Agentic AI/AI Agent development LLMs/Generative AI RAG (Retrieval-Augmented Generation) OpenAI/GPT Anthropic Claude LangChain, LangGraph, AutoGen, CrewAI or similar FastAPI/API development AI orchestration, tool calling and guardrails Strong Investment Banking/Capital Markets experience Excellent communication ...

Java Developer (Market Data)

Location
City Of London, England, United Kingdom
develop systems to leverage and audit market/Reference data feeds. As a Senior Java Developer, you will undertake a mixture of server-side development in Java & SpringBoot, partnered with being a part of business facing initiatives to modernise and enhance their external facing application and ever evolving market … skills in the following: Server-side engineering in Java, and the building of SpringBoot microservices Experience working across Market/Reference Batch Data Modern development best practises including TDD and DevOps, being familiar with modifying CI/CD pipelines to maximise efficiency. REST API development and integration. ...

Creative Technology Developer (AI/ML Focus)

Location
City Of London, England, United Kingdom
efficiency. This position is ideal for arecent MA graduateor early-career technologist with strong academic grounding inArtificial Intelligence (AI),Machine Learning (ML), andmodern software development techniques. The role will work across Film, TV, Games, and Ads to turn small problems into creative solutions. Sittingoutside the core development team … Identify, scope, and deliver innovative software solutions to improve operational workflows and business processes. Use a combination of AI/ML, scripting, and traditional development methods to build prototypes and production-ready tools. Conduct internal discovery across business units to identify pain points and areas for efficiency gains. Build ...

Cyber AI Engineer - Remote

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £425/day
capabilities into practical solutions for Security Operations Centres (SOCs). This is a hands-on role focused on prototyping, experimentation and proof-of-concept development - taking ideas from discovery through to working AI solutions that could genuinely augment cyber analysts and operations. You'll work closely with … experience with Generative AI and LLM technologies, ideally alongside an understanding of cyber security operations. You'll ideally bring experience across: OpenAI platform/API development LLMs and Generative AI RAG implementation Prompt engineering and optimisation AI assistants/copilots Agentic AI or multi-agent systems Python development ...

Principal Information Architect - Metadata Thought Leadership

Location
Greater London, England, United Kingdom
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 ...

Technical Architect - Pre-sales

Location
Greater London, England, United Kingdom
client data will be sourced, validated, and integrated into Mondra, leveraging where possible our existing Import and Export APIs and identifying where custom API development may be required for fulfil Mondra’s data requirements. You will also contribute to the client contracting process, ensuring technical commitments are clearly … including mapping data sources, transformation logic, and validation processes. Identify the client’s BI requirements, and define data export strategies (preferably via existing Mondra API). Identify the authentication/authorisation capabilities of the client, and promote the integration with Mondra’s Identity Provider via Single Sign On. Leverage ...

Member of Technical Staff - Applications

Location
Greater London, England, United Kingdom
usable interfaces. Feed delivery learnings back into platform patterns and defaults so the next system ships faster. What You\'ll Work With Full-Stack & API Development: React, TypeScript, REST, gRPC, FastAPI, Go services, API design. Auth & Governance: OIDC authentication, RBAC, audit logging. Workflows & Integrations: Event-driven systems … About You Strong full-stack engineering background with experience shipping production-grade applications end-to-end. Comfortable owning the full delivery surface — UI through API through auth — without needing to hand off between layers. Experience integrating with external systems or customer environments and making those integrations reliable and maintainable. ...

Backend Software Engineer Python LLM - Finance

Hiring Organisation
Client Server
Location
East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
2.1 or above bachelor's degree in Computer Science, AI or related STEM disciplines You have a strong Python software engineering background including and API development You have hands-on experience deploying LLMs and multi-modal models at scale in production You have a strong understanding of scalable ...

Solutions Engineer (Upmarket, Pre-Sales) - EMEA

Location
Greater London, England, United Kingdom
skills. Have general knowledge with a scripting language (Python, Ruby, Bash, and JavaScript) and a desire to expand those skills. Be familiar with REST API development and service integrations is a plus. Ideally have prior experience in the cybersecurity, GRC (governance, risk, and compliance), or audit space. Open ...

Principal Information Architect – Metadata Thought Leadership

Location
Greater London, England, United Kingdom
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 ...

flutter developer for mobile games

Location
Greater London, England, United Kingdom
Требования Strong, demonstrable Flutter and Dart experience, with the ability to own a production app independently; Solid backend experience with Node.js, TypeScript, MongoDB and API development; Experience integrating third-party services such as Shopify, payments and authentication; Confidence using AI tools to accelerate development; Pragmatic engineering judgement ...

Martech Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £55,000 per annum
scalable applications and integrations using JavaScript, TypeScript, and Node.js * Developing cloud-native and serverless solutions, with a focus on Google Cloud Platform (GCP) * Creating API integrations and automated data pipelines * Supporting the development of AI and agent-based solutions using modern frameworks * Collaborating with digital marketing teams across … Skills & Experience * Strong commercial experience with JavaScript, TypeScript, and Node.js * Experience developing and deploying cloud solutions, ideally within GCP * Familiarity with serverless architectures and API development * Experience working with AI tools, LLM applications, or agentic frameworks such as LangChain or CrewAI * Knowledge of front-end technologies such ...

Data Engineer - Index Data Processing

Location
Greater London, England, United Kingdom
APIs and pipelines. Use automated testing to build and own features from conception to deployment. Requirements SQL/data processing experience Scalable data pipeline development Some experience building effective programmatic interfaces in any language. Desirables Experience with PostgreSQL query performance optimisation Experience with Python HTTP, API development ...

Data Integration Specialist GB

Location
City Of London, England, United Kingdom
transformation techniques. Required Skills and Experience 3+ years of experience in data integration or similar technical roles Strong programming skills with demonstrated experience in API development Deep understanding of database systems and data modeling Experience with ETL processes and data migration projects Familiarity with integration platforms and middleware ...

Senior Data Scientist, Graph Risk Analytics

Location
City of Westminster, England, United Kingdom
professional experience is a strong differentiator Comfort working across research and data engineering contexts — this role spans all three Experience with Docker, Kubernetes, and API development Strong product instincts — able to go deep technically while staying aligned to customer and business outcomes Bonus: Experience with LLMs ...

Machine Learning Scientist III

Location
City of Westminster, England, United Kingdom
engineers, product managers, applied scientists, and domain experts to translate ambiguous business problems into scalable ML solutions. Contribute to system design, low-level design, API development, and data modelling for production machine learning systems. Build and operate production solutions using technologies such as Python, TensorFlow, PyTorch, Redis, Airflow … operational improvement. Experience building and operating production ML systems at scale. Understanding of distributed systems, data structures, algorithms, system design, low-level design, API design, and data modelling. Experience with batch and real-time data processing systems, databases such as Redis, and low-latency serving technologies such as KServe ...

Machine Learning Scientist III

Location
Greater London, England, United Kingdom
engineers, product managers, applied scientists, and domain experts to translate ambiguous business problems into scalable ML solutions. Contribute to system design, low-level design, API development, and data modelling for production machine learning systems. Build and operate production solutions using technologies such as Python, TensorFlow, PyTorch, Redis, Airflow … operational improvement. Experience building and operating production ML systems at scale. Understanding of distributed systems, data structures, algorithms, system design, low-level design, API design, and data modelling. Experience with batch and real-time data processing systems, databases such as Redis, and low-latency serving technologies such as KServe ...

Senior Python Developer: Trading & Risk Systems

Location
Greater London, England, United Kingdom
Responsibilities include building backend applications, data processing pipelines, and collaborating with financial teams. Proficiencies in SQL, leveraging libraries like Pandas and NumPy, and RESTful API development are essential. The role promises a dynamic environment in investment banking within a collaborative setting. #J-18808-Ljbffr ...

Senior Fullstack Engineer - Python + React | Remote

Location
Greater London, England, United Kingdom
Parser Limited is seeking a Senior Fullstack Engineer to design, develop, and maintain scalable backend services and robust frontend interfaces. The role emphasizes microservices, API development, and secure, performant systems with ReactJS on the frontend. You will collaborate with product managers and engineers to deliver AI-enabled solutions ...

Cloud-Native AI Developer & Systems Engineer

Location
Greater London, England, United Kingdom
powered applications within a collaborative team. The successful candidate will leverage their 5-8 years of Python experience along with AI and ML development skills to create scalable, high-performance applications that integrate various AI technologies. Responsibilities include developing data pipelines, optimizing performance, and utilizing cloud platforms. Ideal candidates … will exhibit a robust understanding of API development and database systems, complemented by strong problem-solving abilities. #J-18808-Ljbffr ...