11 of 11 Principal Java Engineer Jobs in England

Principal Software Engineer (Java) London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your … secure transactions across the globe. 🔍 What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Principal Software Engineer (Java) London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your … secure transactions across the globe. 🔍 What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Principal Software Engineer (Java) London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your … secure transactions across the globe. 🔍 What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Principal Software Engineer (Java) London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your … secure transactions across the globe. 🔍 What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Principal Software Engineer (Java) London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your … secure transactions across the globe. 🔍 What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Role: Principal Java Developer Location: Manchester once every two weeks Flexibility going forward: once every two weeks, Flexible. Salary: £70,000 - £80,000 + bonus Do you have experience of developing in Java? Are you passionate about developing high quality software? Are you an enthusiastic problem solver who enjoys working as part of a team in a … continuously improve their tech-for-good products to best support their customers. Follow best practice approaches to development in a highly Agile environment. We are looking for experienced Developers, Principal level to develop the next iterations of our market-leading software. You will play a vital role as a member of one of our Scrum teams in defining and … latest version of our market leading software utilising tools and practices such as pair programming, automated testing and continuous integration all supported by DevOps technologies Tech stack including: Strong Java development skills + experience CI/CD tooling, automated builds, Spring/Spring Boot Advocate for Agile and the ability to drive Agile delivery forwards Good grasp of TDD More ❯

Principal Java Engineers | Up to £140k – Y Combinator-Backed Fintech Java 21, Spring Boot, Microservices, TDD, AWS I’ve partnered up with a fintech company doing some genuinely exciting work across America. They’ve built a platform that allows people to hold and spend money in dollars using stablecoins a game-changer in regions where local currencies … with a card that works globally. Backed by top-tier investors like Y Combinator, they’ve raised over $20 million and are scaling fast.We’re currently looking for 15 Java Engineers (Lead level and above) to join the team. There’s a ton of greenfield work to get stuck into, using Java 21, Spring Boot, Microservices, TDD, AWS … and more. What we’re looking for: Strong experience with Java 21+, TDD, and microservices Passionate and ambitious mindset Clear and confident communicator Ideally, someone with startup experience What’s on offer: Salary up to £140k Bonus + equity Fast, two-stage interview process Interested in hearing more or know someone who might be Drop me a message at More ❯

Principal Java Engineers Up to £140k - Y Combinator-Backed Fintech Java 21, Spring Boot, Microservices, TDD, AWS I've partnered up with a fintech company doing some genuinely exciting work across America. They've built a platform that allows people to hold and spend money in dollars using stablecoins a game-changer in regions where local currencies … a card that works globally. Backed by top-tier investors like Y Combinator, they've raised over $20 million and are scaling fast. We're currently looking for 15 Java Engineers (Lead level and above) to join the team. There's a ton of greenfield work to get stuck into, using Java 21, Spring Boot, Microservices, TDD, AWS … and more. What we're looking for: Strong experience with Java 21+, TDD, and microservices Passionate and ambitious mindset Clear and confident communicator Ideally, someone with startup experience What's on offer: Salary up to £140k Bonus + equity Fast, two-stage interview process Interested in hearing more or know someone who might be? Drop me a message at More ❯

Technical Lead (Java/Python) London £90,000 - £95,000 + Progression + Pension An excellent opportunity awaits an experienced Developer with strong Python and Java experience join an exciting SaaS business. This role offers technical growth, variety, and strong development opportunities. The company is a profitable, maturing technology business delivering software and AI-driven solutions for industrial … mentor and provide technical guidance while working closely with the Software Engineering Manager. This role is fully office-based in London. The ideal candidate is a hands-on Software Engineer with strong experience in Java and Python, confident working with AWS cloud infrastructure including containerisation (Docker/Kubernetes), architecture, and scaling systems. They will have solid skills in … management, and reliability *Mentor and guide the development team while working closely with management *Fully office-based role in London The Person: *Experienced Hands-on Software Developer with strong Java and Python experience *Strong AWS cloud infrastructure and containerisation (Docker/Kubernetes) *Skilled in building and managing data ingestion and processing pipelines (Kafka/Spring Batch) *Looking to lead More ❯

Technical Lead (Java/Python) London £90,000 - £95,000 + Progression + Pension An excellent opportunity awaits an experienced Developer with strong Python and Java experience join an exciting SaaS business. This role offers technical growth, variety, and strong development opportunities. The company is a profitable, maturing technology business delivering software and AI-driven solutions for industrial … mentor and provide technical guidance while working closely with the Software Engineering Manager. This role is fully office-based in London. The ideal candidate is a hands-on Software Engineer with strong experience in Java and Python, confident working with AWS cloud infrastructure including containerisation (Docker/Kubernetes), architecture, and scaling systems. They will have solid skills in … management, and reliability*Mentor and guide the development team while working closely with management*Fully office-based role in London The Person: *Experienced Hands-on Software Developer with strong Java and Python experience*Strong AWS cloud infrastructure and containerisation (Docker/Kubernetes)*Skilled in building and managing data ingestion and processing pipelines (Kafka/Spring Batch)*Looking to lead More ❯

We are looking for a server-side Java developer to grow the platform even further. You are the kind of person who: Loves writing code and building great applications. Wants to work with a team that treats each other with respect and challenges you to be better. What you know how to do: Can write Spring 4 beans and … a related field or have equivalent experience. 8+ years of development experience. Experience working in an Agile environment. Familiarity with SQL and NoSQL databases. Qualifications Does this describe you? Java REST Spring The Ideal Candidate Must have good communication skills. Must have experience working on web applications supporting 1M+ end users or large data sets with 10M+ database records. … with an emphasis on performance optimization. Understanding how to secure data in a REST architecture. Knowledge of scaling web applications, including load balancing, caching, indexing, normalization, etc. Proficiency in Java/Spring web application development. Experience with Test Driven Development and Agile methodologies; Behavior Driven Development is a plus. Knowledge of Hadoop, Big Data, Hive, Pig, NoSQL is a More ❯