CMC Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform. This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence is critical. You'll design and build ultra-low latency pricing and risk systems that directly power our global trading operations. If you thrive in performance critical environments and want your work to have real market impact, we would love to hear from you. Please note that this is an onsite role that will require you to work within our London office (near Liverpool street) 5 days on site per week. The Role Ultra-Low Latency Engineering Develop and optimise high-performance Java (21+) systems for pricing, risk and trading. Build and enhance components within a low latency, high-throughput trading architecture. Apply advanced concurrency, memory management and performance tuning techniques. System Design & Ownership Take responsibility for designing scalable, resilient and maintainable systems. Contribute to architectural decisions across the trading and risk platform. Build tooling to improve monitoring, maintenance and performance diagnostics. Trading-Focused Collaboration Work closely with Quants, Financial Engineering, Front Office and Business Operations. Support live trading systems, troubleshooting time-critical production issues. Contribute to the continuous evolution of our electronic trading infrastructure. Mentorship & Technical Leadership Provide guidance and mentorship to junior developers. Champion engineering best practices, clean code principles and robust design patterns. What You will Bring Strong hands-on Java development experience within low latency financial systems. Deep understanding of performance optimisation, concurrency and JVM internals. Experience working on pricing, risk or electronic trading platforms. Knowledge of FIX protocol, order routing and broker connectivity highly beneficial. Strong mathematical and problem-solving mindset. Experience across asset classes such as FX, Equities, Commodities or Derivatives preferred. Ability to operate calmly in a fast-paced, front-office trading environment. Experience mentoring engineers and influencing technical direction. Why Join CMC Markets? Direct impact on global trading and risk systems. Close proximity to the trading floor and real-time market operations. High-visibility role within a performance-driven engineering culture. Strong focus on continuous learning and technical excellence. Clear progression opportunities into senior technical and leadership roles. CMC Markets is an equal opportunities employer and positively encourages applications from suitably qualified and eligible candidates regardless of gender, sexual orientation, marital or civil partner status, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief, disability or age.
Aug 17, 2026
Full time
CMC Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform. This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence is critical. You'll design and build ultra-low latency pricing and risk systems that directly power our global trading operations. If you thrive in performance critical environments and want your work to have real market impact, we would love to hear from you. Please note that this is an onsite role that will require you to work within our London office (near Liverpool street) 5 days on site per week. The Role Ultra-Low Latency Engineering Develop and optimise high-performance Java (21+) systems for pricing, risk and trading. Build and enhance components within a low latency, high-throughput trading architecture. Apply advanced concurrency, memory management and performance tuning techniques. System Design & Ownership Take responsibility for designing scalable, resilient and maintainable systems. Contribute to architectural decisions across the trading and risk platform. Build tooling to improve monitoring, maintenance and performance diagnostics. Trading-Focused Collaboration Work closely with Quants, Financial Engineering, Front Office and Business Operations. Support live trading systems, troubleshooting time-critical production issues. Contribute to the continuous evolution of our electronic trading infrastructure. Mentorship & Technical Leadership Provide guidance and mentorship to junior developers. Champion engineering best practices, clean code principles and robust design patterns. What You will Bring Strong hands-on Java development experience within low latency financial systems. Deep understanding of performance optimisation, concurrency and JVM internals. Experience working on pricing, risk or electronic trading platforms. Knowledge of FIX protocol, order routing and broker connectivity highly beneficial. Strong mathematical and problem-solving mindset. Experience across asset classes such as FX, Equities, Commodities or Derivatives preferred. Ability to operate calmly in a fast-paced, front-office trading environment. Experience mentoring engineers and influencing technical direction. Why Join CMC Markets? Direct impact on global trading and risk systems. Close proximity to the trading floor and real-time market operations. High-visibility role within a performance-driven engineering culture. Strong focus on continuous learning and technical excellence. Clear progression opportunities into senior technical and leadership roles. CMC Markets is an equal opportunities employer and positively encourages applications from suitably qualified and eligible candidates regardless of gender, sexual orientation, marital or civil partner status, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief, disability or age.
About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery,and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Overview We are looking for a Scala Software Developer to design, build, and maintain high-quality microservices and Back End systems using Scala and the Play Framework . You will help UK government clients solve complex problems and deliver tangible value for citizens and the public sector. Working as part of a multidisciplinary agile team, you will deliver user-centred digital services that meet strict Government Digital Service (GDS) standards and WCAG accessibility requirements. This is a hands-on technical role operating within structured, highly governed environments where security, high performance, accessibility, and architectural reliability are critical to service success. Key responsibilities Build and ship high-performance software components that meet user needs end-to-end. Write clean, secure, and well-tested code in Scala , adhering to functional programming principles and modern development standards. Operate, maintain, and scale the services you build identifying, triaging, and resolving production issues. Follow and help improve internal engineering best-practice guidelines. Coach apprentices and junior developers, contributing actively to Scrumconnect's engineering community. Conduct thorough peer code reviews and contribute to architectural decisions within your team. Collaborate closely with product owners, interaction designers, and user researchers to shape what gets built. Required skills & experience You'll be working with: Scala , Play Framework , MongoDB, AWS, Kubernetes (EKS), Terraform, GitHub Actions, Splunk, Grafana. We're looking for: Strong commercial experience designing, building, and operating production software systems using Scala and the Play Framework. Confidence with modern development practices (Test-Driven Development using ScalaTest/Specs2, continuous integration/continuous deployment, and automated testing). Solid understanding of information security principles and secure-by-default engineering. Experience with systems design, RESTful API development, and microservices integration in complex environments. Comfort supporting services in production including on-call participation, incident response, and setting up observability tools. A user-focused mindset and experience collaborating closely with designers and product colleagues. Experience working in agile or hybrid delivery models (Scrum, Kanban). Experience working on high-volume transactional digital services (or strong evidence you can ramp quickly in a fast-paced environment). Experience delivering digital services within UK central government or the wider public sector. Desirable experience Experience working with regulated public-sector, GDS, or financial-services environments. Open-source contributions to government engineering ecosystems. Active community-of-practice contribution (technical talks, blog posts, or internal Scala mentoring). Location and working pattern Working Pattern: Hybrid working Location: Newcastle Duration: 6 months How we work It is our mission to make digital easy - through intelligent systems that predict needs, automate complexity and drive measurable value for the citizens and organisations we serve. Our values: - Collaboration - We are stronger as a team than as individuals. We tackle problems and celebrate wins together. - Create Value Early - We find the quickest route from idea to product because customers rely on us to do what's best. - Integrity - Teamwork requires trust. We can always be relied upon to uphold the highest standards. - Commitment - No matter what, no matter how, we will always give our 100% to keeping our promises and achieving our goals. Diversity and Inclusion At Scrumconnect Consulting, we believe that diversity drives innovation and better outcomes. We are committed to fostering an inclusive environment where every individual is valued, respected, and supported. We welcome applications from candidates of all backgrounds and actively encourage individuals from underrepresented groups, including women, people with disabilities, and diverse communities, as well as those seeking flexible working arrangements. As a Disability Confident Level 1 employer, we are committed to providing reasonable adjustments throughout the recruitment process and during employment to ensure equal opportunities for all.
Aug 14, 2026
Contractor
About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery,and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Overview We are looking for a Scala Software Developer to design, build, and maintain high-quality microservices and Back End systems using Scala and the Play Framework . You will help UK government clients solve complex problems and deliver tangible value for citizens and the public sector. Working as part of a multidisciplinary agile team, you will deliver user-centred digital services that meet strict Government Digital Service (GDS) standards and WCAG accessibility requirements. This is a hands-on technical role operating within structured, highly governed environments where security, high performance, accessibility, and architectural reliability are critical to service success. Key responsibilities Build and ship high-performance software components that meet user needs end-to-end. Write clean, secure, and well-tested code in Scala , adhering to functional programming principles and modern development standards. Operate, maintain, and scale the services you build identifying, triaging, and resolving production issues. Follow and help improve internal engineering best-practice guidelines. Coach apprentices and junior developers, contributing actively to Scrumconnect's engineering community. Conduct thorough peer code reviews and contribute to architectural decisions within your team. Collaborate closely with product owners, interaction designers, and user researchers to shape what gets built. Required skills & experience You'll be working with: Scala , Play Framework , MongoDB, AWS, Kubernetes (EKS), Terraform, GitHub Actions, Splunk, Grafana. We're looking for: Strong commercial experience designing, building, and operating production software systems using Scala and the Play Framework. Confidence with modern development practices (Test-Driven Development using ScalaTest/Specs2, continuous integration/continuous deployment, and automated testing). Solid understanding of information security principles and secure-by-default engineering. Experience with systems design, RESTful API development, and microservices integration in complex environments. Comfort supporting services in production including on-call participation, incident response, and setting up observability tools. A user-focused mindset and experience collaborating closely with designers and product colleagues. Experience working in agile or hybrid delivery models (Scrum, Kanban). Experience working on high-volume transactional digital services (or strong evidence you can ramp quickly in a fast-paced environment). Experience delivering digital services within UK central government or the wider public sector. Desirable experience Experience working with regulated public-sector, GDS, or financial-services environments. Open-source contributions to government engineering ecosystems. Active community-of-practice contribution (technical talks, blog posts, or internal Scala mentoring). Location and working pattern Working Pattern: Hybrid working Location: Newcastle Duration: 6 months How we work It is our mission to make digital easy - through intelligent systems that predict needs, automate complexity and drive measurable value for the citizens and organisations we serve. Our values: - Collaboration - We are stronger as a team than as individuals. We tackle problems and celebrate wins together. - Create Value Early - We find the quickest route from idea to product because customers rely on us to do what's best. - Integrity - Teamwork requires trust. We can always be relied upon to uphold the highest standards. - Commitment - No matter what, no matter how, we will always give our 100% to keeping our promises and achieving our goals. Diversity and Inclusion At Scrumconnect Consulting, we believe that diversity drives innovation and better outcomes. We are committed to fostering an inclusive environment where every individual is valued, respected, and supported. We welcome applications from candidates of all backgrounds and actively encourage individuals from underrepresented groups, including women, people with disabilities, and diverse communities, as well as those seeking flexible working arrangements. As a Disability Confident Level 1 employer, we are committed to providing reasonable adjustments throughout the recruitment process and during employment to ensure equal opportunities for all.
Global technology & software product company operating in the observability and monitoring space, is looking for a Senior Java Software Engineer to join their Platform Team in London . You'll help build the distributed services that sit at the core of their product, ingesting and transforming data at scale so it can power a range of analytics and monitoring tools used by customers around the world. Location: London (Old Street / Shoreditch). Salary: £90K - £110K basic , plus an extensive benefits package. Working arrangement: hybrid, ideally 2 days per week in the office, with flexibility considered. What you'll be doing Design and build distributed services from the ground up, working with core Java rather than solely relying on heavy framework usage. Develop event-driven systems using Kafka and event-streaming frameworks at scale Orchestrate deployments on Kubernetes , defining services, deployments and stateful sets Tackle hard problems around data consistency and availability, and shape how the platform evolves Mentor other engineers while continuing to learn from senior peers across a global team What you need to bring At least 7 years' experience as a backend Java developer, building complex distributed systems A deep understanding of core Java, data structures and concurrency, not just framework knowledge Hands-on experience with Kafka and event-streaming frameworks such as Flink, Kafka Streams or Spark Practical Kubernetes experience, including troubleshooting production issues Experience tuning JVM performance - garbage collection, CPU hotspots and heap dump analysis Why you'll love this job Genuine ownership - you'll take on your own piece of the product within 90 days, backed by a supportive team A strong learning culture, with a structured onboarding plan and an ambitious L&D policy behind you An extensive benefits package covering health, dental, pension, life assurance and more If you're a b ackend-focused Java engineer who enjoys solving hard distributed systems problems and wants to work on technology used at global scale , we'd love to hear from you. Apply today to find out more about this opportunity.
Aug 14, 2026
Full time
Global technology & software product company operating in the observability and monitoring space, is looking for a Senior Java Software Engineer to join their Platform Team in London . You'll help build the distributed services that sit at the core of their product, ingesting and transforming data at scale so it can power a range of analytics and monitoring tools used by customers around the world. Location: London (Old Street / Shoreditch). Salary: £90K - £110K basic , plus an extensive benefits package. Working arrangement: hybrid, ideally 2 days per week in the office, with flexibility considered. What you'll be doing Design and build distributed services from the ground up, working with core Java rather than solely relying on heavy framework usage. Develop event-driven systems using Kafka and event-streaming frameworks at scale Orchestrate deployments on Kubernetes , defining services, deployments and stateful sets Tackle hard problems around data consistency and availability, and shape how the platform evolves Mentor other engineers while continuing to learn from senior peers across a global team What you need to bring At least 7 years' experience as a backend Java developer, building complex distributed systems A deep understanding of core Java, data structures and concurrency, not just framework knowledge Hands-on experience with Kafka and event-streaming frameworks such as Flink, Kafka Streams or Spark Practical Kubernetes experience, including troubleshooting production issues Experience tuning JVM performance - garbage collection, CPU hotspots and heap dump analysis Why you'll love this job Genuine ownership - you'll take on your own piece of the product within 90 days, backed by a supportive team A strong learning culture, with a structured onboarding plan and an ambitious L&D policy behind you An extensive benefits package covering health, dental, pension, life assurance and more If you're a b ackend-focused Java engineer who enjoys solving hard distributed systems problems and wants to work on technology used at global scale , we'd love to hear from you. Apply today to find out more about this opportunity.
Global technology & software product company operating in the observability and monitoring space, is looking for a Senior Java Engineer to join their Platform Team in London . You'll help build the distributed services that sit at the core of their product, ingesting and transforming data at scale so it can power a range of analytics and monitoring tools used by customers around the world. This is an excellent opportunity to join a highly-skilled team of Software Engineers, who value technical coding ability, ownership & delivery - no client work, no consultancy, no "Project management" of software - just pure, coding ability with Java, Data & complex, distributed global software systems required! Location: London (Old Street / Shoreditch). Salary: £120,000 to £125,000 basic, plus an extensive benefits package. Working arrangement: hybrid, ideally 2 days per week in the office, with flexibility considered. What you'll be doing Design and build distributed services from the ground up, working with core Java rather than solely relying on heavy framework usage. Develop event-driven systems using Kafka and event-streaming frameworks at scale Orchestrate deployments on Kubernetes, defining services, deployments and stateful sets Tackle hard problems around data consistency and availability, and shape how the platform evolves Mentor other engineers while continuing to learn from senior peers across a global team What you need to bring At least 7 years' experience as a backend Java developer, building complex distributed systems A deep understanding of core Java, data structures and concurrency, not just framework knowledge Hands-on experience with Kafka and event-streaming frameworks such as Flink, Kafka Streams or Spark Practical Kubernetes experience, including troubleshooting production issues Experience tuning JVM performance - garbage collection, CPU hotspots and heap dump analysis Why you'll love this job Genuine ownership - you'll take on your own piece of the product within 90 days, backed by a supportive team A strong learning culture, with a structured onboarding plan and an ambitious L&D policy behind you An extensive benefits package covering health, dental, pension, life assurance and more If you're a b ackend-focused Java engineer who enjoys solving hard distributed systems problems and wants to work on technology used at global scale , we'd love to hear from you. Apply today to find out more about this opportunity.
Aug 12, 2026
Full time
Global technology & software product company operating in the observability and monitoring space, is looking for a Senior Java Engineer to join their Platform Team in London . You'll help build the distributed services that sit at the core of their product, ingesting and transforming data at scale so it can power a range of analytics and monitoring tools used by customers around the world. This is an excellent opportunity to join a highly-skilled team of Software Engineers, who value technical coding ability, ownership & delivery - no client work, no consultancy, no "Project management" of software - just pure, coding ability with Java, Data & complex, distributed global software systems required! Location: London (Old Street / Shoreditch). Salary: £120,000 to £125,000 basic, plus an extensive benefits package. Working arrangement: hybrid, ideally 2 days per week in the office, with flexibility considered. What you'll be doing Design and build distributed services from the ground up, working with core Java rather than solely relying on heavy framework usage. Develop event-driven systems using Kafka and event-streaming frameworks at scale Orchestrate deployments on Kubernetes, defining services, deployments and stateful sets Tackle hard problems around data consistency and availability, and shape how the platform evolves Mentor other engineers while continuing to learn from senior peers across a global team What you need to bring At least 7 years' experience as a backend Java developer, building complex distributed systems A deep understanding of core Java, data structures and concurrency, not just framework knowledge Hands-on experience with Kafka and event-streaming frameworks such as Flink, Kafka Streams or Spark Practical Kubernetes experience, including troubleshooting production issues Experience tuning JVM performance - garbage collection, CPU hotspots and heap dump analysis Why you'll love this job Genuine ownership - you'll take on your own piece of the product within 90 days, backed by a supportive team A strong learning culture, with a structured onboarding plan and an ambitious L&D policy behind you An extensive benefits package covering health, dental, pension, life assurance and more If you're a b ackend-focused Java engineer who enjoys solving hard distributed systems problems and wants to work on technology used at global scale , we'd love to hear from you. Apply today to find out more about this opportunity.
Senior Software Engineer (Kotlin) Up to £105,000 + bonus + excellent Benefits Hybrid - 2 days onsite in Central London (Zone 1) Are you a JVM engineer curious about Kotlin - or already loving it? Want to solve complex problems that contribute to a greener, more sustainable world? Join a high-calibre engineering team building modern, customer-facing and energy-focused systems in one of the U click apply for full job details
Oct 06, 2025
Full time
Senior Software Engineer (Kotlin) Up to £105,000 + bonus + excellent Benefits Hybrid - 2 days onsite in Central London (Zone 1) Are you a JVM engineer curious about Kotlin - or already loving it? Want to solve complex problems that contribute to a greener, more sustainable world? Join a high-calibre engineering team building modern, customer-facing and energy-focused systems in one of the U click apply for full job details
