10 backend engineer jobs found in London

Senior Backend Engineer - Contractor (Outside of IR35) Senior Software Engineer – Java (Contract - Outside of IR35) Duration: 3 Months Plus Start Date: ASAP Day Rate: £400 - 500 per day   As a  Senior Software Engineer (Java) – Contractor  at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required. Key Responsibilities: Design and develop scalable backend systems...

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Emphasis on Architecture over Development (Must have a solid Development Background) Must be comfortable sitting in client meetings and advising Start date ASAP Duration 3 months (Likely to extend) 3 days / week in person working (London) Immediate Interviews     The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.     Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.     We are based at Old Street in the heart...

About Crumb Crumb is building the infrastructure for the independent legal economy. We believe that by 2030, the majority of lawyers will work independently. The standard for legal delivery has never been higher, but the tools to run an independent practice haven’t kept up. Crumb provides the operating system for fractional lawyers — helping them manage their practice, understand their work, invoice clients, and connect with new opportunities. The Role We’re looking for a Product Engineer (Contract) to help ship core features of the Crumb platform. You’ll work directly with the founders to build and launch production software quickly. This role is focused on execution — turning product ideas into working systems. You’ll work across the stack, building real product features used by independent lawyers. Typical work includes: Building product features end-to-end using React, Node.js, and TypeScript Implementing integrations and webhooks Designing asynchronous...

Mindera are currently looking for a Senior Software Deployment Engineer who can lead the delivery, configuration, testing, and rollout of applications and retail device solutions across complex, large-scale environments. In this role you will help shape deployment strategy, drive automation, improve reliability, mentor engineers, and work closely with product, platform, and engineering teams to ensure smooth, secure, and high-quality releases that reaches thousands of customers. This is a hybrid role and you will be expected to be on site in Bracknell 3 days per week. Requirements Deployment & Configuration Leadership Lead end-to-end deployment processes across Dev, Test, UAT, Pre-Prod, and Production. Design scalable, repeatable deployment workflows and environment strategies. Drive automation across CI/CD pipelines using scripting, IaC, and tooling improvements. Ensure environment readiness, configuration integrity, and release reliability....

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Emphasis on Architecture over Development (Must have a solid Development Background) Must be comfortable sitting in client meetings and advising Start date ASAP Duration 3 months (Likely to extend) 3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of ʺtech cityʺ...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial instruments and systems. Bonus...

We are seeking a passionate Software Engineering Manager who will provide technical expertise and operate with excellence. Being creative, curious, and confident, you will be an integral part of our empowered, self-managing, multi-disciplinary engineering teams - designing, building, releasing, and maintaining products. You will play a key role in driving our ambition to create a best-in-class software engineering team, environment, and culture. This is an initial 6 month contract (outside IR35) that requires you to work on client site 3 days a week in London, Paddington.   Your key accountabilities will include: • Team Management: Build, mentor, and manage a high-performing software engineering team. Foster a culture of collaboration, innovation, and continuous improvement within the team. Facilitate communication and collaboration among team members. Ensure budgets, people and resource allocation, and workload, balance across projects. • Agile Delivery:...

Kato is a fast growing PropTech (property tech) company. Backed by industry-leading VCs, investors, entrepreneurs and advisors, we’re on an exciting path with a mission to change the future of commercial property. We’re doing this through our ever-evolving all-in-one online platform built for everyone involved in commercial property transactions, plus a whole lot of industry data. We’re only just getting started, and we’re looking for dynamic, confident individuals to expand our brilliant team and join us on the journey!   Role overview We're looking for a Senior DevOps Engineer to join us on an initial 3-6 month contract basis. You'll be our go-to person for all things infrastructure; owning our AWS environment, keeping things running smoothly, and helping us level up how we build and ship software. Right now, we're at a point where we need someone who can take what we've got and make it better: tighter CI/CD pipelines, cleaner...

Principal Data Engineer - Temporary Contract Who we are looking for We are looking for a person who is passionate about the possibilities of data-driven culture and the advantages that organisations adopting data-driven learning can have in this rapidly changing market environment. The primary focus of the Principal Data Engineer role is  collaborating with stakeholders on various levels to gain a deep understanding of existing business processes and needs and implement end to end reporting & analytics solutions applying the latest enterprise engineering practices ensuring security, performance, and quality standards.  About Schroders We are a global investment manager. We help institutions, intermediaries and individuals around the world invest money to meet their goals, fulfil their ambitions, and prepare for the future. We have around 6,000 people on six continents. And we have been around for over 200 years but keep adapting as society and...

Waracle is looking for a Lead or Senior Backend Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations. This role is open to permanent or contract (Inside IR35) candidates and is a hybrid working role based from any Waracle office (Glasgow, Edinburgh, Dundee or London). Are you a technical expert who enjoys solving complex puzzles and helping others grow? We are looking for a Lead or Senior Developer who values collaboration and technical excellence in equal measure. Whether you are already...