151 to 175 of 335 Java Jobs in the City of London

do: Build trading systems and market data infrastructure Develop quantitative research platforms and tools Optimize performance-critical financial applications Requirements: 2+ years software engineering experience Strong C Python/Java skills Trading experience preferred but not essential Our network: Pay: $150K-$800K+ based on experience Locations: London, Remote Focus: Trading platforms, risk systems, data infrastructure From high-growth prop firms More ❯

pipelines Delivering reliable, query-ready datasets to quants and researchers What they are looking for: Experience in distributed data engineering at scale Strong coding skills in Python, C++ or Java Familiarity with kdb+, ClickHouse, Kafka, Parquet/Arrow Previous experience with tick-level financial data is a strong advantage More ❯

it's importance - the tech stack is ultra-modern right across the board and there's a huge amount of new development to be done. Required 5+ Years Core Java Development Expereince in Algos or OMS in an Enterprise Environment. Strong Computer Science, Engineering (or related subject) background. Able to work in a modern software engineering environment, using Agile and More ❯

and direct impact from day one, with occasional travel to customer sites across the UK and internationally. What We're Looking For Strong coding skills in Python, C++, or Java Frontend experience with React and TypeScript Excellent communicator who thrives working directly with users Interest in AI, robotics, or embedded systems Excited to work in fast-moving, on-site technical More ❯

architecture alongside modern Android best practices. Ensure high-quality, maintainable code and scalable solutions. Required Skills & Experience Proven experience leading Android teams and mentoring developers. Deep expertise in Kotlin , Java , RxJava , and Jetpack Compose . Strong understanding of Android architecture patterns (including VIPER , MVVM, and Clean Architecture), asynchronous programming, and UI/UX best practices. Hands-on experience with CI More ❯

design and technical presentations Required Skills: 8+ years in senior technical architectural/leadership roles Strong background in FinTech or Financial Services Strong software development experience across multiple languages (Java preferred) Expertise in distributed systems, microservices, and cloud-native architecture Deep experience with AWS/GCP Strong communicator able to influence technical direction Leadership qualities to manage and mentor teams More ❯

design and technical presentations Required Skills: 8+ years in senior technical architectural/leadership roles Strong background in FinTech or Financial Services Strong software development experience across multiple languages (Java preferred) Expertise in distributed systems, microservices, and cloud-native architecture Deep experience with AWS/GCP Strong communicator able to influence technical direction Leadership qualities to manage and mentor teams More ❯

direction Compensation: Up to £150k (depending on exp.), equity, great perks (daily lunch, private health cover, 7% pension) 🚀 What they’re looking for Strong programming skills (Python, C++, Golang, Java, or Rust) A practical mindset - you enjoy solving tough, real-world problems Comfortable travelling and working hands-on with end users Their stack: Rust & Typescript (Happy to upskill) 📍 London | Hybrid More ❯

with Product Owners and team members to deliver value 👨‍🏫 Mentor junior developers and support their growth 🧠 What You Bring: 💻 Solid commercial experience in Kotlin (Open to those with a java background) 🌱 Experience with Spring Boot , or similar frameworks (e.g. Ktor) 🧩 Strong API-first mindset and clean coding practices 🧪 Knowledge of Agile, peer reviews, pair programming, and test-driven development 📐 Understanding More ❯

living, by providing affordable access to clean energy for the charging of electric vehicles. In this position, they are looking for experience in: 3+ years commercial experience JVM development - Java, Kotlin or Scala (Bonus) if you have already worked with Kotlin Microservices architecture Public cloud technologies e.g. AWS Have worked in modern, product-focused tech companies This is a fantastic More ❯

implementing AWS Well Architected Security pillar. Breadth of knowledge of cloud-based IAM/PAM and authentication concepts. Strong proficiency in coding/scripting/development languages – Python, Terraform, Java ideally Experience building and fine-tuning security tooling to be deployed in cloud environments. More ❯

GitHub and ClearCase. Ensure reliability and performance for real-time, mission-critical systems. Primary Skillset 5+ years of experience with Linux and Windows OS . Strong knowledge of C, Java, Oracle Database, SQL, and shell scripting . Experience reading/debugging logs and system files. Familiarity with GitHub and ClearCase . Proven experience with real-time or mission-critical systems More ❯

partner with CTO and drive tech strategy A high-calibre team in a collaborative, flat and engaging environment Experience required Stack: Open to strong engineers; experience in C#, Python, Java, or cloud-native development a plus Investment Banking, Asset Management or Hedge Fund experience Business knowledge on Trading and trade flows front to back Competitive comp package in line with More ❯

in the wild, not just in notebooks . What We’re Looking For Strong hands-on experience with machine learning engineering at scale . Expertise in Python (plus C Java a bonus), and familiarity with ML frameworks like PyTorch, TensorFlow, Scikit-learn . Experience building production-grade pipelines (Spark, Ray, Kafka, Dask, Kubernetes, cloud). Ability to handle large, noisy More ❯

Java/Kotlin Engineer A fast-growing Fintech company based in London, are on the lookout for talented Kotlin Engineers to join their high-impact engineering team. You don’t need to be a Kotlin expert yet — if you’ve worked in any JVM language (Java, Scala, Clojure, etc.) and are keen to learn Kotlin, we’d love to hear … maintainable code with a focus on reliability and scalability. Contribute to architectural discussions and help shape our platform as we scale. What we’re looking for Strong experience with Java, Scala, Kotlin, or another JVM language. Solid understanding of modern software engineering principles — from CI/CD to cloud-native development (AWS, GCP, or Azure). Experience with frameworks like More ❯

with Finance data/reporting in a corporate or investment banking context Excellent stakeholder management and communication skills Confident using JIRA and leading distributed teams Exposure to C# and JAVA would be a nice to have Contract Details Daily Rate : Up to £1150 (Inside IR35) Location : London (Hybrid working) Start : ASAP Duration : Initial 6 months (likely extension) Please apply with More ❯

and roadmap. You will likely have: Experience leading and scaling engineering teams within a front-office trading or high-performance technology environment. Strong hands-on background in modern C++, Java, or Python, with deep understanding of systems architecture and distributed design. Proven ability to bridge business and engineering, collaborating effectively with PMs, data scientists, and operations teams. A passion for More ❯

ML infrastructure. Influence across organisational boundaries and champion modern engineering trends. Stay ahead of the curve in Generative AI, ML infrastructure, and cloud-native tooling. Tech Stack Programming: Python (Java familiarity is a plus). AWS: S3, Kinesis, Glue, Lambda, Step Functions, SageMaker, and more. On-Prem: Managed Kubernetes Platform and Hadoop ecosystem. Why This Role is Different Direct Impact More ❯

experience of overseeing the Full Software System Lifecycle of a product Experience of working with software systems/programmes within an environmental setting Demonstrable experience in the use of Java Middleware, API, Docker, and MQ systems Good working knowledge of performance and security in Enterprise Systems Experience of working with networks: LAN & WAN/Internet and Security Prior experience of More ❯

Stack Engineer you will have the following experience: Designed and build scalable microservices, contributing to a growing distributed architecture. You can write code in at least 2 languages, preferably Java, C#, Python, Go, Ruby or Rust. Good React UI Development, however, probably consider yourself a stronger backend engineer. Used to working with Product and Design teams to turn complex requirements More ❯

nothing quite like building the next tech unicorn, together, in the same room, ask the big players. What you’ll need to succeed: Strong experience building production quality software (Java, TypeScript, or Python) Curiosity and adaptabilit y: you learn new technologies quickly and apply them effectively Hunger and drive: you’re comfortable working in ambiguous, fast paced environments Ownership mentality More ❯

s or Master’s degree in Data Science, Computer Science, or a related field. 5+ years of experience in data engineering and data quality. Strong proficiency in Python/Java, SQL, and data processing frameworks including Apache Spark. Knowledge of machine learning and its data requirements. Attention to detail and a strong commitment to data integrity. Excellent problem-solving skills More ❯

Job description Java Full-Stack Developer Location: London (Hybrid) Salary: £85,000 – £90,000 + benefits I’ve partnered with an exciting tech firm who are building software that transforms how stakeholders make important decisions. What started as a consultancy has evolved into a SaaS platform that helps organisations cut through hundreds of pages of board packs and focus on … what matters. Their products combine Java, AI, and modern web technologies to deliver clarity and speed for decision-makers. They’re estimated at nearly $30M, annually, and have 3 offices globally, with the view to grow their UK footprint. Having recently doubled down on AI-driven tools, they are tackling the biggest pain points stakeholders have, information overload and poor … decision-making efficiency. What You’ll Do Develop and enhance their core services built in Java (Spring Boot). Work on full-stack features using React (or similar modern JS frameworks). Collaborate on new product initiatives, including AI-powered tools. Contribute to architecture decisions and help shape the future Tech Stack Backend: Java (Spring Boot), Ruby on Rails (legacy More ❯

Have you got experience leading a team while remaining hands-on and technically involved? Senior Java Developer – FX Trading Salary : up to £120k + bonus Location : London office 3 days a week We are delighted to be continuing our longstanding partnership with an FX Market Disruptor FinTech that has been acquired by a leading capital market. They are looking for … an experienced Java Developer who will fulfil a hands-on Senior/Lead role leading the next generation of Java Developers. They are looking for the following experience in Senior Java Developers: Core Java development Multithreading, concurrency, low latency Working in the financial sector e.g. FX, trading Building microservices in the cloud (GCP, AWS) with Kubernetes Product-led development – architecting … training & development budget Are you looking for a step up in your career to take on additional responsibilities while remaining technically hands-on? Apply now for this excellent Senior Java Developer opportunity! Please note : Due to compliancy reasons, we will only be able to consider applications based in and eligible to work in the UK. More ❯

Java Developer – upto £140k plus shares Java21, Springboot, Microservices, TDD, AWS A well-funded, product-led tech startup is building a next-generation financial platform designed to serve millions across emerging markets. Their mission is to simplify access to stable, secure digital finance, enabling users to save, transact, and grow their money with confidence. We’re looking for x8 Java … and the impact is tangible. You’ll be working with a modern stack, contributing to a microservices ecosystem, and collaborating across disciplines to deliver secure, scalable solutions. The ideal Java Developer will bring deep experience in Java (17+), a strong grasp of distributed systems, and a passion for building infrastructure that performs under pressure. Tech stack includes: Java 21, Springboot More ❯