Trading applications - Essential Proficiency with Bash and a scripting language such as Python or Perl Detailed practical knowledge of FIX. Ideally, familiarity with native exchange protocols Experience in SQL (PostgreSQL, MySQL, MS SQL) Bachelor’s degree in computer science, Engineering or related subject preferred Highly organized, detailed, control oriented, enjoys solving problems and brings in a "take charge" attitude Strong More ❯
backend behemoth: You write clean, scalable, high-performance backend code. You take pride in your craft. Bonus points for familiarity or mastery with our tech stack: FastAPI and pydantic, postgres, sqlalchemy, etc. Happy with (or ready to learn about) all the usual add-ons like Redis, Celery, New Relic, Sentry; and deploying to production with good CI/CD/ More ❯
the challenge! That might look like this: Must-Have: • 3+ yrs building ML/AI systems that served real users. • Strong Python; comfort with AWS, Docker, Terraform/CDK, Postgres, etc. • Solid grounding in ML algorithms, MLOps, and data science workflows. • Experience with Spark, TensorFlow, Kafka, or similar tools. • Experience with SageMaker, KServe, Triton, or similar infra. Nice-to-Have More ❯
big ambitions, backed by top-tier VCs who were early backers of companies like Stripe and Airbnb. We’re building in a modern stack (TypeScript, Next.js, Vercel, Supabase/Postgres, Tailwind), blending powerful agentic AI architectures, curated LLM pipelines, quantitative methods and robust SaaS foundations. We’re looking for Senior Product Engineers who: Are deeply curious and passionate about building More ❯
Reading, Berkshire, United Kingdom Hybrid / WFH Options
Bytes Group
issue tracking in JIRA. Observability: Instrument applications using the LGTM stack (e.g. logs, metrics, tracing) to ensure reliability and rapid incident response. Database Management: Design and optimize schemas in PostgreSQL and Microsoft SQL Server; write efficient queries, migrations, and manage connections securely. Collaboration & Mentorship: Work closely with product managers, designers, and fellow engineers; participate in code reviews, pair programming, and … Hands on with Docker, Kubernetes, GitHub, ArgoCD (or similar GitOps), and Snyk. Cloud Platforms: Proven track record deploying and managing applications on Azure. Databases: Comfortable modelling, querying, and tuning PostgreSQL and MSSQL databases. Observability: Experience setting up metrics, logs, and tracing with the LGTM stack (or ELK/Prometheus/Open Telemetry equivalents). CI/CD: Skilled at building More ❯
Years of Experience: 3- 5+ years Skills: Go, Java, Git, REST Web Services, Jenkins, NoSQL, Postgres/ql Based in London Victoria or Burgess Hill Enthusiastic, diligent Senior Golang Software Engineer to work on the global Loyalty and Benefits platform in American Express. The candidate should have excellent soft skills, strong technical ability with an extensive passion to learn. A … engineering methodology (Agile, incl Scrum, Kanban, SAFe, Test-Driven Development (TDD), Behavior Driven Development (BDD) and Waterfall) Knowledge of any or all of the following technologies is desired: Kafka, Postgres, Golang, Git, gRPC, Docker, GraphQL · Experienced in continuous integration (CI), continuous deployment (CD) and continuous testing (CT), including tools such as Jenkins, Rally and/or JIRA and version control More ❯
slough, south east england, united kingdom Hybrid / WFH Options
THRivve by intelletec
high-growth fintech scale-up working with top-tier global financial institutions. The role involves building and scaling backend systems in Node.js and Python, deploying on AWS (Lambda, DynamoDB, PostgreSQL), and collaborating closely across engineering, product, and customer teams. 💼 Ideal Candidate: Proven experience with backend/fullstack development using Node.js , Python , and AWS serverless architecture Strong database design skills (PostgreSQL … Comfortable mentoring developers and influencing technical direction Experience in financial services or a data-heavy B2B environment is a plus 🛠 Tech Stack: Node.js , Python , AWS (Lambda, DynamoDB, CloudWatch, CloudFormation), PostgreSQL, Elasticsearch, Terraform 📍 Location: Hybrid, based in London (Victoria) — flexible home/office split Please apply now More ❯
slough, south east england, united kingdom Hybrid / WFH Options
HBS
needs of multiple real-time consumers with reliability and clarity. 📌 About the Role Design and deliver a metadata API for real-time and historical workflows. Model and manage Aurora PostgreSQL relational data with scalability and consistency in mind. Build serverless endpoints using TypeScript on AWS Lambda, exposed via API Gateway. Collaborate with graphics and frontend teams to define clear, consumer … to architecture reviews and cross-functional teamwork. 🛫 What makes a successful candidate? Proficient in TypeScript and modern JavaScript (ES6+). Strong experience with AWS serverless (Lambda, API Gateway, Aurora PostgreSQL/RDS). Skilled in relational database design, SQL, and performance tuning. Experienced in RESTful API design (GraphQL a plus) and Swagger/OpenAPI. Knowledge of CI/CD pipelines More ❯
Citywire’s Catalyst platform. -Design resilient, fault-tolerant workflows using AWS services such as Lambda, Kinesis, SQS, DynamoDB Streams, and EventBridge. -Implement processors that ensure data consistency across DynamoDB, PostgreSQL (Aurora), OpenSearch, and BigQuery. -Modernise legacy batch processes into stream-first architectures. -Build and integrate APIs to enable smooth publishing and consumption of events across systems. -Collaborate with engineers on … and resilient design patterns. -Cloud & CI/CD Experience: Familiarity with Terraform, Git-based workflows, and cloud-native deployments. -Database Skills: Experience with SQL and NoSQL databases such as PostgreSQL, DynamoDB, or OpenSearch. -Problem-Solver: Comfortable working in Linux environments and confident debugging logs, scripts, and production issues. -Additional Skills: Exposure to Kafka, Spark, or dbt Core, with an interest More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Aquent
Develop and implement user interfaces using JavaScript and React. Develop and maintain server-side logic using Python, managing APIs, and integrating third-party services. Design and manage databases in Postgres, ensuring data integrity and security. Build and deploy AI/ML solutions, including Agentic systems, MCP servers/clients, and RAG systems with LLMs. Perform ETL processes and build vector … throughout the project lifecycle. Proficiency in JavaScript and React for front-end development. Experience with Python for back-end development, API management, and third-party service integration. Experience with Postgres database design and management. Expertise in building and deploying AI/ML solutions, including Agentic systems, MCP servers/clients, and RAG systems with LLMs. Experience with ETL processes and More ❯
Theale, Berkshire, United Kingdom Hybrid / WFH Options
Applause IT Recruitment Ltd
ready digital infrastructure. What You'll Be Doing: Leading data migration and ETL projects for UK public sector software implementations Analysing and mapping legacy database schemas (Oracle, SQL Server, Postgres) Extracting raw data from legacy systems, often with limited documentation Writing and executing SQL scripts and/or using ETL tools to build data pipelines Creating transformation logic and performing … What You'll Need: Strong ETL experience in data migrations or software transitions Expert-level SQL scripting for transformation and manipulation Hands-on knowledge of Oracle, SQL Server, or PostgreSQL Excellent communication skills for working with technical and non-technical stakeholders Problem-solving mindset when facing incomplete or messy data A consulting approach - proactive, collaborative, and detail-driven Nice to More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Medly AI
latency data environment within AWS Work on our AI backend and help make it scale proof Help with migration to AWS Consolidate mobile and web databases into one optimized Postgres environment Develop processes for importing and editing data directly in the database Collaborate closely with the CEO and other Full Stack Engineers on high-impact projects Technical Requirements … years of back-end engineering experience, ideally in a startup environment Strong knowledge of Python and Flask Proficiency with SQL and Postgres Experience with AWS services (migration experience is a plus) Ideal Candidate Quality Focus: Obsessive attention to detail and commitment to shipping polished, bug-free experiences Collaborative Spirit: Ability to work closely with designers, product managers, and other developers More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Burns Sheehan
Senior Backend Software Engineer (multiple vacancies) – Python | FastAPI | AWS | Microservices 💵 £70,000–95,000 base salary + Bonus 📦 Flexible benefits budget | 90 day work-from-anywhere perk 💻 Python, FastAPI, PostgreSQL, DynamoDB, AWS, EKS 📍 Remote first or hybrid (London) InsurTech | Modern, high traffic, scalable microservices development We’ve partnered with a well known name in the insuretech space - one of the … re looking for a number of bright, engaging Senior and Lead Software Engineers familiar with or interested in working with their tech stack. Tech stack: Python (FastAPI) | gRPC | GraphQL | PostgreSQL | DynamoDB | AWS | EKS | CI/CD pipelines What you’ll be doing: ✅ Contributing to the design and development of scalable backend systems ✅ Working across rotating product squads with full domain More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Capi Money
Senior Fullstack Engineer Hybrid from London or Paris Typescript, React, NextJS, NodeJS, Express, PostgreSQL £80,000 - £120,000 + equity depending on experience About the Company: Capi helps businesses in Africa pay their international suppliers. We’ve raised over $18m from Creandum, Y Combinator, General Catalyst, Firstminute, Janngo, Kima Ventures, and some great angels from Revolut, Checkout, Stripe, Onfido, and … and KYC documents from customers Asynchronous workers that OCR invoices Internal tooling to manage and process millions of dollars of transactions Our stack is: Typescript, React, NextJS, NodeJS, Express, PostgreSQL Requirements Experience in a high growth or VC-backed engineering team and building products used by customers A strong understanding of web development, frontend and backend best practices Excellent written More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Client Server
As a Principal Platform Engineer you'll have an impactful role with lots of influence. Initially you'll assess the current tech set up based on GCP, Python, TypeScript, PostgreSQL and Terraform; establish the production environment and extend the platform to enable scalability. You'll collaborate closely with the CTO and Lead Software Engineer to establish and build systems from … discipline You have a software engineering background with a strong knowledge of modern best practices, architecture and design experience You have strong, current technical skills including: GCP, Python, TypeScript, PostgreSQL and Terraform You're collaborative and pragmatic with strong leadership and stakeholder management skills You have experience of building teams and developing people What's in it for you: Starting More ❯
This is an opportunity to join early and shape something meaningful. What You'll Do Architect and build end-to-end features across our stack (Next.js + TypeScript + PostgreSQL) Build modular, maintainable UI components that feel seamless and fast Shape APIs, database schemas, and infrastructure with scalability in mind Work closely with design, product, and ops to deliver polished … 90K + Equity | 3 Days LDN What They Are Looking For 4+ years of experience building and shipping web applications Deep knowledge of Next.js & TypeScript Backend skills in Node.js, PostgreSQL, and related tooling Comfort working autonomously in a fast-moving, early-stage environment Strong sense of ownership, taste, and engineering quality Bonus: experience in e-commerce, headless CMS, payments, or More ❯
coding platforms. API Architecture : Designing and building robust APIs that serve as the foundation for future integrations and external endpoints. This will involve shaping a modern architecture based on Postgres while moving away from low-code solutions. System Reliability : Ensuring that the backend is resilient, stable, and dependable, giving the wider team confidence to ship improvements without worrying about breakages. … looking for someone with strong backend experience, ideally in Python, and a track record of building production-ready systems with complex business logic. Familiarity with relational data modelling and PostgreSQL is key, as is experience making architectural decisions in growing environments. While the work will be 90% backend-focused, some comfort with basic frontend tasks (HTML, CSS, jQuery) will be More ❯