Build scalable backend systems, APIs, data pipelines, and DevOps practices using Python or full-stack JavaScript, integrating voice, reasoning, and context management. You will ship end-to-end product features for an AI layer designed to autonomously run small businesses for thousands of customers.

You will work with React, React Native, Node.js, TypeScript, SQL, AWS, and cloud-native AI-powered products. The company is a Series A–funded, fast-growing tech business building products that matter and planning to double in size. This Staff Engineer role owns business-critical product areas and mentors engineers while remaining deeply hands-on.

As a founding AI engineer, you’ll build production algorithms and evaluation pipelines using Python, LLMs, prompt engineering, OpenAI evals, PostgreSQL, and React/TypeScript. You will develop AI for patent generation, pushing LLM boundaries to boost efficiency for 400+ global IP teams. You work directly with PhD founders from UCL and Cambridge.

Work with JavaScript, Vue.js/React/Angular, HTML/CSS, and Figma to build scalable UI components. Join TransPerfect’s TechOps team, which delivers technology and interfaces for the company’s GlobalLink platform.

Work with a modern TypeScript stack: Next.js App Router, Server Actions, React 19, Node.js, Drizzle ORM, PostgreSQL, Playwright, Vitest, and GitHub Actions. Join Rentmigo's two-person engineering team to build and scale the core platform for their seed-stage PropTech startup, which allows UK renters to build credit history and wealth through monthly payments. As the third engineer, you'll own features end-to-end and influence architectural decisions.

You will work with Java 17+, Spring Boot, Oracle SQL, document store DBs, Kubernetes, Jenkins, and GitHub Copilot. The investment bank team builds mission-critical, high-performance systems providing end-to-end visibility into payment lifecycles for technical, operations, and reporting teams.

Infosys★3.8 (17k)· London

Lead Consultant role at Infosys: build Oracle Fusion HCM Cloud solutions for UK public sector clients using HDL, HCM Extracts, BI Publisher, Fast Formulas, Payroll Batch Loader, OIC, and Redwood. This technical architect handles HR modules (Core HR, recruiting, learning, talent, UK payroll, pension, OTL, absence), integrations, data migration, and SDLC delivery. Preferred experience managing a team of 10+.

This role involves maintaining and building data pipelines using SQL, Python/Java, and cloud tools like Google Cloud Platform, BigQuery, Airflow, dbt, and Apache Spark. The team supports data analytics and reporting for a media company's portfolio. It focuses on integrating data from web analytics, CMS, subscription, and ad tech sources to enable business intelligence.

Sovos★3.3 (105)· London

Lead partner and internal enablement strategy at a tax compliance SaaS company, using platforms like Mindtickle, Seismic, or Highspot and working with ERP systems such as SAP, Oracle, or NetSuite. You will drive scalable partner certification programs and AI-forward enablement initiatives, collaborating with Product, Marketing, and Sales teams. This role oversees an enablement function, managing teams with 3+ years of leadership experience.

Microsoft★4.2 (9k)· London

Work with Azure SQL, Azure Database for PostgreSQL, Azure Cosmos DB, Microsoft Fabric (Lakehouse, Data Factory, Spark, Power BI, Real-Time Intelligence), and Copilot to help organisations modernise their data estates and ground AI on their data. As a Solution Engineer, you lead strategic customer engagements, design architectures, and mentor peers within Microsoft’s Data & AI team.

Salesforce★4.2 (1.5k)· London

Works with Salesforce Agentforce, Data360, MCP, A2A

Fortinet★3.7 (188)· London

Work with Python, Microsoft SQL, Mongo, Postgres, and Tableau to maintain data pipelines, ETL processes, and REST API integrations. Support Sales Operations by managing databases that serve as the foundation for AI and LLM-powered tools across the organization.

Work with SQL, Python, AI tools (LLMs, AI agents), and data visualization tools (Tableau, Power BI, D3.js) on AWS, Snowflake, Postgres, and MySQL. Analyze private markets and alternative investment data, extracting insights from unstructured text (PDFs) and collaborating with Product and Machine Learning teams.

Workato★4.1 (7)· London

You will work with iPaaS, API management, data orchestration, EDI, AI/agentic automation, and enterprise MCP as a Chief Strategic Architect at Workato. The role is the external technical authority and strategic advisor within a region, engaging with C-level executives at enterprise accounts to shape integration, automation, and AI orchestration strategies.

Competition & Markets Authority★3.7 (15)· London

Data scientists join a ~20-person Data Science & Data Engineering team building tools on AWS, using Python, Git/GitHub, generative AI, agentic AI frameworks and web apps. The CMA regulates digital markets and protects consumers by analysing large-scale data and algorithms to ensure fair competition.

Work with Cypress, Playwright, Selenium, Appium, Postman, Jira, and Git to build and maintain automated test suites integrated into a CI/CD pipeline. As part of Reset Health's QA team, you will design manual and automated tests for web and native mobile apps while helping transition to greater automation and AI under an ISO13485 QMS.

NatWest Group★3.7 (1.2k)· London

You'll work with Cisco and Arista platforms, VxLAN, EVPN, Cisco Meraki, and multicast protocols to engineer and automate enterprise network infrastructure. This role supports NatWest Group's digital transformation, building secure, scalable network solutions for its financial services environment.

You will work with Cypher, Neo4j, Terraform, REST APIs, Kafka/Confluent, Python, JavaScript, React, Go, OAuth 2.0, AuthZEN, and AI tools like Gemini and Claude. IndyKite builds a data trust and AI enablement platform using a live context graph to secure agentic AI workloads with identity-centric authorization. You will act as a technical evangelist, delivering demos, proofs of concept, and architectural guidance across enterprise sales cycles.

Persistent Systems★3.9 (626)· London

Work with Java, iOS, Swift, mobile architecture patterns, Test-Driven Development, and automated mobile testing tools to design and build the user interface and user experience for iOS financial applications. The role also involves cross-functional collaboration, code reviews, and ensuring scalable, maintainable, and optimized code.

NatWest Group★3.7 (1.2k)· London

You will work with React, Java, Spring Boot, REST APIs, Kafka, IBM MQ, iOS, and Android, applying test-driven development and Agile practices. As a member of a permanent feature team, you will design, develop, and test software for the bank’s platform, collaborating with engineers and architects.

Design, build, and optimize ServiceNow solutions using Script Includes, Business Rules, Client Scripts, Flow Designer, IntegrationHub, REST/SOAP APIs, MID Server, and App Engine. Develop across ITSM, CMDB, and Service Portal for enterprise environments. Mentor junior developers and enforce platform standards.

Big Potato★0.0· London

Own the Flutter companion app for Big Potato's board games, using Dart, Flutter, Node.js, TypeScript, MongoDB, and Next.js/React. You'll build daily games with Flame or Unity, integrate REST APIs, Shopify, payments, and analytics, and use AI tools daily to accelerate coding, refactoring, and testing.

Design software using Java, C#, Python, JavaScript, TypeScript, or Go, with REST APIs, microservices, SQL databases (PostgreSQL, SQL Server, MySQL, Oracle, MongoDB), and cloud platforms (AWS, Azure, GCP). You will build enterprise applications and business-critical services across the full development lifecycle.

As a backend engineer on the Pricing Core team, you will work with Java, Spring Boot, AWS, and Apache Kafka to build and maintain the main pricing platform that enables teams at Wise to price their products reliably and scalably. The services process 100+ million requests daily within strict SLAs.

Develop mobile apps in React Native (iOS/Android) with TypeScript, Expo, and Jest, integrating with Ruby on Rails backend services over a JSON API and Postgres. You will join the product team building a market-leading platform that manages the end-to-end installation of home energy solutions like boilers, heat pumps, and solar panels for brands such as BOXT and E.ON Next.