Senior Software Engineer role working with TypeScript, React (NextJS), Node.js, PostgreSQL, and AWS (SQS). You will join an eight-person engineering team building a full-stack platform that automates UK immigration, integrating LLM and AI for document classification and extraction.

You will architect and build scalable backend systems using Node.js, TypeScript, PostgreSQL, and event-driven microservices, integrating LLMs to power Felicity—an AI assistant automating 80–90% of property management workflows. As the most senior backend engineer at LightWork AI, you will mentor engineers and establish engineering standards.

Work with Svelte/TypeScript, Python (FastAPI, Django), PostgreSQL, and AWS. Tab is a YC-backed London travel fintech building a payments platform for 100,000+ global tourism businesses, processing thousands of real-time transactions per hour. You will develop features across the stack and collaborate in a tight-knit engineering team.

Architect a greenfield financial platform using TypeScript, React, and Node, integrating digital asset infrastructure with traditional banking rails for cross-border payments in emerging markets. Lead zero-to-one development of ledger, custody, and settlement systems. Scope of team or reports is not stated.

You will work with Python, FastAPI, LLMs, RAG architectures, chain-of-thought prompting, and multi-agent tool use. The Science team builds cognitive architectures to create synthetic populations for behavioral prediction, using LLMs to simulate human responses with 95% accuracy.

Work with Svelte, TypeScript, Python (FastAPI/Django), PostgreSQL, and AWS. You'll build and scale a payments platform processing 100 currencies and a discovery engine listing 100,000+ tourism businesses. Join a profitable, lean team of nine as one of the first developers.

Backend engineers will build low-latency services and APIs in Rust using Tokio, async frameworks, and proc-macros, with cloud infrastructure on Azure and Kubernetes. The role supports a global financial services firm's trading platform, connecting pricing engines, risk systems, and core infrastructure.

You'll work with HTML, CSS, JavaScript/TypeScript, React or Vue, Git, Jira, Figma, automated testing, and AI tools like Claude Enterprise, in an agile model. As an AI-forward web developer embedded in SharkNinja's D2C business, you'll fix bugs from the ticket backlog and bridge Design and Engineering to buildable requirements. No team size is stated.

Senior Data Engineer role using SQL, Python, Java, Airflow, dbt, Spark, BigQuery, Snowflake, GCP, AWS, and DOMO. You will design and maintain scalable data pipelines for web analytics, CMS, ad tech, and social media, supporting analytics and reporting across Independent Media’s portfolio of digital news brands.

The role builds and maintains the automation layer for ElevenLabs' influencer/creator marketing program, covering discovery, onboarding, contracts, content tracking, reporting, invoices, and payment alerts. Tech stack includes Zapier, Make, n8n, Python or JavaScript, APIs, webhooks, SQL, plus integrations with social platforms, CRM, finance, Slack, and e-signature tools.

Design, build, and deploy ML models using Python, TensorFlow, PyTorch, Scikit-learn, and LLMs with LangChain, RAG, and vector databases (Pinecone, FAISS). Deploy on AWS, Azure, or GCP, developing REST APIs with FastAPI/Flask. This role is with Aivra Health, a health technology company solving real-world business problems.

A Staff Engineer will drive front-end and mobile technical strategy using React, React Native, and TypeScript across a tribe of 3–5 squads at Flagstone Group, an online savings platform. The role involves owning design systems, architecture, and mentoring, plus Azure, CI/CD, and security practices.

Work with Cisco and Arista platforms, including VxLAN, EVPN, Meraki, and traditional enterprise networking, plus automation and infrastructure as code. You'll engineer enterprise network solutions for NatWest Digital X, ensuring security, resilience, and operational requirements.

Luxoft★4.5 (669)· London

Work with Python, FastAPI, AWS (eventing, queues, serverless), Git, CI/CD, vector databases, RAG, and LLMs (OpenAI, Azure OpenAI, Anthropic). Build an Agentic AI solution to generate investment insights from sales and research materials, reducing client meeting prep time. Also use React (TypeScript) for UI and possibly AgentCore, AWS Neptune, API Gateway.

Use React Native (iOS/Android) with Ruby on Rails, Postgres, and JSON APIs; work with TypeScript, Expo, Jest, and Git. You will build the platform managing end-to-end installation of home energy solutions for BOXT and E.ON Next. As technical anchor, you mentor junior engineers and lead mobile architecture.

You will own the Flutter/Dart companion app end-to-end, building daily games in Flame or Unity and maintaining REST APIs. You will also work across Node/TypeScript + MongoDB backends and the Next.js/React web platform. Big Potato creates easy-to-learn, laughter-first board games played by millions worldwide.

Design, build, and operate cloud infrastructure on AWS, Azure, or GCP using Terraform, Kubernetes, Docker, CI/CD pipelines (GitHub Actions, Azure DevOps), and scripting (Python, Bash, PowerShell). The role delivers secure, scalable platforms for enterprise applications and digital services, partnering with software, security, and architecture teams.

You will work with Large Language Models (LLMs), agentic AI, and cloud-native technologies on the Enterprise Asset Management team, building AI-native enterprise software that solves complex customer challenges. The role involves designing, building, and evolving scalable, secure production systems where AI enhances product capabilities.

You will work with Node.js/TypeScript, Ruby/Rails, Nuxt, AWS CDK, serverless event-driven architecture, and the Salesforce platform. As part of the “In Life” squad, you will maintain back-end services, iterate on Digital Renewals customer journeys, develop quoting tools, and build batch jobs.

You’ll use JavaScript, React, Python, Go, Grafana, GCP, Docker, and Kubernetes, alongside APIs and LLM integrations. The role provides technical support for Xapien’s AI-driven due diligence platform, troubleshooting issues and collaborating with Engineering, Solutions, and Product teams to improve developer experience.

Develop software using Java, C#, Python, JavaScript, TypeScript, Go, RESTful APIs, microservices, SQL databases (PostgreSQL, MySQL, etc.), MongoDB, cloud platforms (AWS, Azure, GCP), Docker, Kubernetes, and CI/CD tools. This role builds and maintains enterprise applications and business-critical services for Elite Global Logistics, a logistics firm.

You will work with Python, SQL, PostgreSQL, Snowflake, git, GitHub, and CI/CD pipelines to support in-house fund management tools. The Index Analytics and Technology team within Legal & General’s Asset Management division builds and maintains these tools for portfolio performance analysis and data pipelines.

As a UI Software Engineer at NatWest, you will design and develop user interfaces using React, Java-based microservices with Spring Boot, and mobile apps for iOS/Android, while also working with REST APIs, Kafka, IBM MQ, and TDD/automated testing frameworks on a permanent feature team.

Working with JavaScript, ReactJS, AngularJS, Python, Java, AWS, GitLab, Google Cloud Platform, Kafka, Hadoop, PostgreSQL, and Snowflake, you'll join the Engineering Platforms team to deliver a modern software development tool chain for engineers across the bank.

Build interactives, calculators and data visualizations using JavaScript, React or Svelte, D3, R or Python, SQL, and Git. You will work on data-led stories for The Times and The Sunday Times newsrooms, fact-checking claims and maintaining data infrastructure. No team size specified.