Backend engineer jobs in London - Page 2Create job alerts

Backend Software Engineer – 6 months contract – UK(Remote) – £48 - £54/Hour. The existing team is a Product team that is building backend for user-facing product.

Following investment, they are now looking for a Staff Backend Engineer to join the team and help build their core backend systems. As a Staff Backend Engineer, you’ll be one of the first key hires on a new backend team. You will play a critical role in shaping the backend architecture, scaling s...

Profitable VC‑backed SMB SaaS | 1–3 % equity | UK visa sponsor | Build core product used by 500+ restaurants.Jelly is rebuilding the operating system for food businesses from the ground up.Kitchens in Michelin stars, pubs, cafes and hotels still run core ops on pen & paper; we give them a modern

Our client is a leading cryptocurrency-focused quantitative trading firm operating in the digital assets space, they are now seeking a Data Engineer to join them in London on a fully remote basis. The Data Engineer will have 3-7 year of experience working in a high impact role within finance. Dat...

Founding Backend Engineer – AI/HealthTech | Hybrid (London). Architect and develop backend microservices (Python/FastAPI) that power our RAG pipelines and analytics.

The ideal candidate is a seasoned software engineer who excels in designing and building complex software applications across the entire stack, particularly in single-page applications (SPA) or back-office systems. The Lead Full Stack Engineer will be responsible for both frontend and backend dev...

Senior Fullstack Engineer - Node/TypeScrip/React - AI MedTech - Salary + Equity - Hybrid, 1 day a week FRESH has partnered with an exciting start-up that is leveraging Artificial Intelligence to improve healthcare services. Through the use of advanced AI, this software can identify potential...

Title: Software Engineer (Fullstack) Salary/Package: £65k-£80k + Equity Company Sector: Fintech (Sustainability) Tech: TypeScript, Node, React, Next, GraphQL Location: Central London (London Bridge / Bank) WFH / Hybrid: 2 days a week on site Bounce are partnering with a customer who we ...

Role: Backend Python & AI Engineer.

Backend Engineer, Python, Go, Cloud Infrastructure | AWS, Full-stack mindset, TypeScript | AI, B2B Scale-up | £550 - 650pd Outside IR35 | 6-month contract | London, Hybrid. If you wish to apply for the Backend Engineer, Python, Go, Cloud Infrastructure | AWS, Full-stack mindset, TypeScript | AI, ...

Lead Backend Engineer (Kotlin/JVM) in a B2B FinTech startup. Join a B2B FinTech startup backed by a global bank, that is transforming the financial advisory space. Experience in a startup environment: building fast, wearing many hats.

What You'll Be Doing as a Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :. Core Skills for the Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :. Senior Backen...

The are looking for a Golang Software Engineer to join their engineering group. Design and develop robust, scalable, and secure backend services using Golang. Golang Developer with hands-on experience in designing and developing applications and frameworks.

This is an applied role, and we are looking to hire a software engineer with experience in cloud computing and distributed systems. Docker), infrastructure-as-code software (e.

Lead Backend Developer / Software Engineer (Python Java AWS) opportunity. Lead Backend Developer / Software Engineer (Python Java AWS) London / WFH to £115k. Are you a backend focussed software developer with leadership skills?.

We’re seeking a highly experienced and motivated Compiler Engineer [contractor] for a 3 month engagement outside of IR-35 to work on our ML Backend and functional simulator for our next-generation OTPUs with our permanent team.

Ruby on Rails (API-only), Sidekiq, MySQL, AWS (EC2, RDS, EFS), Highcharts.INDY powers every operational layer of a movie theater—from ticket sales and concessions to scheduling, accounting, and real-time business intelligence.Our platform handles tens of millions of tickets a year across cinemas ...

As the Staff Data Engineer (Back End), you will shape the future of our application's backend architecture, APIs, and infrastructure. Over six years of experience in data engineering, with at least two years working at a staff / principal level.

Salary: Up to £80,000 + Benefits.A mission-driven start-up, transforming the future of long-term private healthcare, are looking for a Founding Backend Engineer to specialise on their Backend using Python.They are building a smart, more efficient way for GP practices to manage care, scheduling an...

PHP), ideally with SaaS products. Senior Backend Engineer (PHP) - Build the Future of Data Connectivity!. Are you a seasoned backend engineer (PHP) eager to join a high-performing team that's at the forefront of data integration? If you're passionate about building platforms that empower other en...

The founding team consists of Cambridge graduates and former engineers at Microsoft, Bloomberg and Goldman Sachs. The role involves the design and development of backend infrastructure for Machine Learning workloads. This is an applied role, and we are looking to hire a software engineer with exp...

Copello is currently partnering with a global laser communications business. As a Backend Software Engineer, you will work on a powerful network orchestration platform designed for highly dynamic, global-scale connectivity systems. Work on pioneering technology that will shape the future of globa...

We are partnered with a pioneering blockchain infrastructure company that is building the backbone of decentralized finance. Our client supports some of the most widely used wallets and exchanges in the crypto space, with their systems currently handling over 20% of Ethereum network traffic. Thi...

🚀 Staff Software Engineer |Lead Engineer | Principal Engineer | £120K | Hybrid - London Staff Software Engineer - .NET | London (Hybrid) We're working with a high-growth, tech-driven company undergoing a major platform modernisation and are looking for a Staff Software Engineer to join the...

Design, implement, and maintain scalable backend systems and APIs. Keep up with emerging technologies and bring innovative ideas to the backend systems. Proficiency in backend programming languages such as Python, and familiarity with TypeScript and React.

They are looking for a Senior Backend Engineer with deep expertise in Kotlin (or JVM and willing to step into Kotlin specifically) to help scale and enhance their high-performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a ...

Having recently raised a substantial Seed round, they are now looking to hire an exceptional backend focused Senior Rust Engineer to join their high-calibre, distributed team in Europe. As Senior Backend Engineer (Rust) you will:. You have experience deploying and operating backend systems in the...

Senior Backend Engineer (Equity only). As a Senior/Lead Backend Engineer, your responsibility will be to manage the server-side code and APIs of our mobile applications.

Join a Fintech Revolution - Newly created role - As the first in this role, you’ll play a key role in defining how backend engineering evolves within a fast-scaling global fintech – with full support from leadership and autonomy to innovate. This is an opportunity to take ownership of robust, sc

Python • FastAPI • LangChain/LlamaIndex • PostgreSQL + PGVector • Redis • Pinecone/Weaviate • Vertex AI • Cloud Run • Docker • Terraform • Prometheus/Grafana • GitHub Actions. Master’s degree in Computer Science, Software Engineering, or related field; or equivalent practical

Golang Software Backend Engineer. A couple of Golang Software Backend Engineers are required for an exciting and innovative Software house company based in London and Hong Kong. Their development team uses various different programming languages with a particular focus on Golang but they are look...

Go, Kubernetes, microservices, GCP).SEED stage AI startup; Custom LLMs for Financial Services.Package: £80k - £120k base salary + a chunk of equity + benefits.UK Remote-First (occasional meet-ups in London, paid for).We’re looking for 2 x experienced.AI startup about to raise £10M in new fundin

Backend Blockchain Engineer | Web3 financing | London | up to £90,000 + bonus.

AI-first contact-centre as a service platform that automates contact operations across voice, email, chat and SMS, enabling humans in the loop where necessary. The role will focus on backend development that blends email, chat, telephony, voice AI and LLMs. Develop and maintain backend services u...

Senior Backend Game Engineer (Multiplayer / AAA Projects). In this role, you’ll be a key contributor to the backend systems that power scalable, real-time multiplayer games enjoyed by millions. Design and build high-performance backend systems to support online multiplayer gameplay across various...

As a Senior Backend Engineer, you will be tasked with the successful operation and delivery of backend software projects that encompass C++ development, SIP signaling protocols, WebRTC, audio streaming development, and AI speech-to-speech technology. You will play a crucial role in architecting b...

Senior Python Backend Engineer – 100-110k- 3 days in London. Senior Backend Engineer (Python). Python, Pandas, GCP/AWS, CI/CD, Terraform.

As a Senior Backend Engineer, you’ll be building and scaling the core systems that power payments for thousands of small businesses across the UK. You'll work closely with the product, frontend, and operations teams to deliver secure, high-performance services that are reliable at scale.

Im looking for a Python Engineer who’s passionate about machine learning, AI, and building production ready systems. Strong Python + backend experience.

Lead Backend Engineers (Platform Experience & Data Warehousing teams) 👩🏽‍💻. We are looking for experienced Lead Backend Engineers (PHP) to join either. As a Lead Backend Engineer, you will lead the development of new features, drive high code quality, provide technical guidance, and colla

We are seeking a Backend Software Engineer to work closely with the frontend and embedded software teams to improve and develop our cloud-based backend infrastructure. The ideal candidate will have worked for at least 3 years as a backend software engineer and have experience working with buildin...

We are hriing for an innovative analytics software company powering global credit investment is expanding its engineering team and looking for a Senior Fullstack Engineer to help shape its next generation of data products. Senior Fullstack Engineer | Hybrid | London. Proven experience with backen...

We are seeking an experienced Senior JavaScript full stack developer who loves modern web design and backend development, has a great eye for detail and is excellent problem solver. Proven track record as a Senior Software Engineer in a SaaS environment.

Lead Software Engineer / Developer (C# .Net 8 Azure) London / WFH to £110k Do you have expertise with C# .Net backend development combined with technical leadership skills? You could be progressing your career in a hands-on leadership role, at a tech company that provide a SaaS product s...

Senior C# Developer / Engineer (C# .Net Core React) London / WFH to £80k Are you a skilled C# Developer looking to work on complex and interesting systems with continual learning and self development opportunities? You could be progressing your career at in a senior, hands-on role at a su...

At QAD we are looking for a Senior Golang Software Engineer who is passionate about new technologies, and wants to be part of the team developing and maintaining the QAD Champion API Backend (Golang), serving the primary AI use-cases for various products within QAD.

Our client, a world-leading trading firm is currently seeking a Senior Full-Stack Developer specialising in java with some Python and React, to join their Commodities Trading Desk in London. This is a fantastic opportunity to work in a low-frequency trading team focused on building high-performan...

IDEXX is looking for a Senior Data Engineer to join the Veterinary Software team in London! This is an exciting opportunity for a a data engineer looking to expand their technical leadership skills and make an impact in a meaningful industry. This role will be hybrid 2 days onsite in our Wim...