Senior Java Software Engineer jobs in City of Westminster

Senior Java Engineer (Core Java) Want to apply Read all the information about this position below, then hit the apply button. £100,000 - £130,000 Central London - Hybrid A high-growth, privately backed Enterprise SaaS company is seeking a Senior Core Java Engineer to join its London-based engineering team. The organisation builds large-scale, mission-critical platforms used by some of the...

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract You can get further details about the nature of this opening, and what is expected from applicants, by reading the below. Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a...

Java Developer Increase your chances of an interview by reading the following overview of this role before making an application. Join a high-impact Core Technology team at a leading hedge fund. About the Company This firm is a major player in the space, a multi-strategy hedge fund with a strong focus on systematic and quantitative trading. Founded by industry veterans, it combines deep...

Java Software Engineer In order to make an application, simply read through the following job description and make sure to attach relevant documents. A leading trading firm in London is growing its engineering team and is looking for a high-performance Java Engineer to help build ultra-low-latency systems used directly on live trading desks. What You'll Be Doing - Designing and building...

About Us: If you think you are the right match for the following opportunity, apply after reading the complete description. We're a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision. Our mission is to bring the intelligence of modern...

Senior Software Engineer (Python) A high number of candidates may make applications for this position, so make sure to send your CV and application through as soon as possible. Up to £130,000 + excellent benefits (including work from abroad) Hybrid - 2 days onsite in Central London (London Bridge) Are you a Senior Python Engineer who loves solving deep technical challenges? Want to help...

Senior Python software engineer - with strong Maths background Is this the role you are looking for If so read on for more details, and make sure to apply today. Are you a software engineer who thrives on building robust, scalable products with a strong foundation in mathematics and analytics? We're specifically looking for an engineer—not a data scientist—to join ScanmarQED as a Senior Python...

You will also collaborate with the Platform, Support and DevEx teams on the wider technical strategy, reporting to the Director of Engineering in an influential role.

A fast-growing AI-driven SaaS company is hiring three Senior Software Engineers to join its engineering team. These are hands-on roles with a strong backend and architectural focus, ideal for engineers who enjoy working in scale up or startup environments and want to build high-quality, cloud-native software that powers real-world automation. The experience expected from applicants, as well as...

Senior Software Engineer (Python - FastAPI) Find out more about the daily tasks, overall responsibilities, and required experience for this opportunity by scrolling down now. This fast-growing consultancy is pushing the boundaries of AI and data science, helping clients turn complex challenges into scalable, production-ready solutions. They're now hiring a Senior Software Engineer who can blend...

Senior Embedded Software Engineer Scroll down for a complete overview of what this job will require Are you the right candidate for this opportunity Salary: Up to £100,000 Location: London - 3 days a week We're working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform...

You will join a cross-functional product engineering team focused on the evolution and modernisation of a core InsurTech platform. The work centres around building scalable, cloud-native services while improving performance, reliability, and long-term maintainability.

You should be comfortable with most of our core technologies:

Senior Backend Python Engineer – London A high number of candidates may make applications for this position, so make sure to send your CV and application through as soon as possible. London · In-person Very competitive base + equity A well-funded Series A startup in London is building AI agents that help internal teams focus on meaningful work by automating repetitive, admin-heavy finance...

London or Manchester (Hybrid) | £50,000 – £80,000 + Equity The full job description covers all associated skills, previous experience, and any qualifications that applicants are expected to have. About us At the forefront of using investment portfolios as security for access to credit, Firenze is emerging as the category defining leader in what is known as "Lombard lending". We already work...

Location LondonHybrid 1-2 days a week in the officeeligibility to work in the UKRole Overview Find out if this opportunity is a good fit by reading all of the information that follows below. We are seeking a highly skilled Senior Software Developer to lead the design and development of high quality, cloud native software solutions that drive real product and business impact. In this role, you...

About Webigence and Spark Travel Is this your next job Read the full description below to find out, and do not hesitate to make an application. Webigence has 25 years of experience crafting UX‐first, often highly complex software. Our engineers pair forward‐thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is...

Java Developer / Software Engineer (Java AWS Kafka) London / WFH to £90k Make sure to apply with all the requested information, as laid out in the job overview below. Are you a bright, ambitious Java technologist who enjoys building systems from scratch? You could be progressing your career at a global, prime broker that is replacing the legacy infrastructure used across capital markets with a...

Java Engineer - Java Developer - Software Engineer - PostGres - Kubernetes - Kafka - TDD - 6-Month Contract - Hybrid (2 days on site, London) - Day Rate: Up to £650 (Inside IR35) Apply (by clicking the relevant button) after checking through all the related job information below. Join a high-performing engineering team working on large-scale, high-availability systems used by millions. This...

You will be joining a highly innovative scale-up leading at the forefront of the GreenTech industry, as they assist in the global transition towards sustainable living, by providing affordable access to clean energy for the charging of electric vehicles. In this position, they are looking for experience in: