242 Java jobs in London

Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our mission is to make society’s critical technology work via automated & holistic IT observability solutions that safeguard critical applications and enable innovation.

With our prestigious customer base includes 90% of the world's top investment banks. We are backed by leading private equity investors and are rapidly growing.

Our headquarters are in Shoreditch - London's tech hub – with offices in other UK and global locations from the Netherlands to Manila, NYC and Chicago. We pride ourselves on a diverse, friendly, dynamic culture - with a focus on internal promotion and developing our people.

ITRS Group is looking for Senior Java Engineer in London. Reporting to our Engineering Manager, you will sit in the Platform Team and form part of a wider global Engineering Team.

The Core Platform layer is a collection of distributed services which ingest, transform and materialise observability data to make it available to several similarly distributed visualisation, integration, analytics and other domain specific applications to provide solutions to a range of observability problems. We are looking to strengthen our core platform team in anticipation of wider customer adoption through 2025.

Our role offers a permanent, full-time position working from our London office on a hybrid work schedule.

• Participate in all phases of the product lifecycle, including design, development, documentation, testing, integration, deployment, and ongoing support.
• Participate in mentoring relationships — both giving and receiving guidance— to foster mutual growth and development within the team.
• Approach our products and customer challenges with curiosity, striving to understand the solutions we deliver.
• Work with team members to develop innovative, customer-centric solutions.
• Take part in team support responsibilities to ensure reliable service for our customers.
• Advocate for a culture of quality and testing, offering guidance and support to team members less experienced in these practices.
  

In your first 30 days, you will:

• Learn as much as you can about our company, team and product.
• Complete hands-on training with ITRS Analytics and other products in the ITRS portfolio.
• Follow an onboarding checklist and meet with team members from across the company.
• Pair with current team members for meetings, demos, and presentations.
• Review recorded sales calls and learn our sales motion.
• Take over parts of the agenda as you get more comfortable.

In your first 60 days, you will:

• Continue pairing with the current team and assuming a more active role in the agenda.
• Begin playing a role in the Analytics developers community, answering questions and sharing advice.
• Select a learning course that aligns with your goals and experience and begin the course.
• Continue to grow your understanding of ITRS, both us and our products.
• Learn how we develop products.
• Build relationships.
• Discover how our products connect and interact.

In your first 90 days, you will:

• Assume ownership of an initial subset of the product, supported by the team.
• Continue to learn and grow. ITRS is committed to your ongoing personal growth. There will always be opportunities requiring it. We have an ambitious L&D policy to support your learning and growth

Requirements

• You are predominantly a backend Java developer with at least 7 years of experience building complex distributed systems.
• You have built applications from the ground-up with a deep understanding of core Java, data structures and concurrency, rather than relying on frameworks such as Spring.
• You have built event-driven applications using Kafka and solutions with event-streaming frameworks at scale (Flink / Kafka Streams / Spark) that go beyond basic ETL pipelines.
• You know how to orchestrate the deployment of applications on Kubernetes, including defining services, deployments, stateful sets etc. and where to look if there is a problem.
• You know how to design systems from a macro-level through to the micro-level optimisations needed to build high-performance, scalable solutions.
• You have tackled hard problems in the past around data consistency vs availability and have designed systems around these considerations.
• You have designed complex data models and managed their evolution to limit breaking-changes and support backwards compatibility.
• You have a focus on delivery and an awareness of how your contribution in a software team delivers end-value in a product.
• You have likely tuned garbage collection, fixed CPU hotspots and analysed heap dumps to find memory leaks on JVMs.
• You have likely instrumented custom metrics in your application and used monitoring/observability tools to understand how they behave in different environments and to identify the root cause of issues.

Benefits

• Health Insurance and Dental Health Cover for you and your dependants
• Employee Assistance Programme
• Pension
• Flexible Hybrid Working
• Enhanced Parental Leave
• Travel Insurance
• Life Assurance
• Income Protection
• Referral Bonus
• Buy and Sell Holiday
• Training Reimbursement

ITRS Group is an Equal Opportunity employer and Inclusion is part of our everyday life. We celebrate diversity and pride ourselves on providing an environment where all employees can be their authentic selves and have a voice, allowing everyone to contribute equally. We remain committed to advocating inclusion, diversity, and equality into our ITRS family as we grow and enrich our business.

We welcome applications from everyone in the community as we recognise that a diverse workforce is a stronger workforce.

Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our prestigious customer base includes 90% of the world's top investment banks. We are backed by leading private equity investors and are growing.

Our headquarters are in Shoreditch - London's tech hub – with offices in other UK and global locations from the Netherlands to Manila, NYC and Florida. We pride ourselves on a diverse, friendly, dynamic culture - with a focus on internal promotion and developing our people.

The Apps team in London is expanding and we are looking for a senior Java developer with interest and experience in system monitoring, time-series visualisation/analysis, or similar. We are looking for someone who can take an active and leading role in delivering domain specific monitoring solutions.

The team builds Apps which can monitor and report on the status of 10s of thousands of servers, processes, and business flows. We have several green-field projects in the pipeline which require smart UIs for incident investigation, root-cause analysis, signals and alert configuration. To accelerate the development, we are looking for someone who will work directly with the frontend developers and stakeholders to drive the product forward.

You will work with the wider applications team, reporting into the Apps Engineering Manager. As an engineer you will be hybrid, with 2 days per week in the London office.

Requirements

As a Senior Software Engineer, you will:

• Evolve solutions based on feedback.
• Collaborate with the team, including backend, frontend, UX and Product.
• Communicate App's data requirements to other teams.
• Provide contribution to improving the engineering teams' processes and standards.
• Support decisions on technical choices in projects, participating as a technical expert, defining solutions for our clients.
• Work with the Engineering Manager to provide delivery estimates and manage activities throughout the development lifecycle.
• Help deliver development projects from requirements, design to release.
• Pay attention to quality, maintainability, performance and testing.

Benefits

• Health Insurance and Dental Health Cover for you and your dependants
• Enhanced Pension
• Flexible Hybrid Working
• Enhanced Parental Leave
• Travel Insurance
• Life Assurance
• Income Protection

ITRS is an Equal Opportunity employer and Inclusion is part of our everyday life. We celebrate diversity and pride ourselves on providing an environment where all employees can be their authentic selves and have a voice, allowing everyone to contribute equally. We remain committed to advocating inclusion, diversity, and equality into our ITRS family as we grow and enrich our business.

We welcome applications from everyone in the community as we recognise that a diverse workforce is a stronger workforce.

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 industria.

WHJS1_UKTJ

One of the UKs most iconic omni-channel retailers is looking for a Lead Java Developer to join their expanding digital engineering function. This position requires deep expertise in Kotlin or modern Java , strong architectural understanding of microservices , and a passion for technical leadership and mentoring. Experience working within ecommerce, mobile, or customer-facing digital platforms is highl.

WHJS1_UKTJ

Job Title: Java Swing Developer

Location: Bromley (Hybrid)

We are looking for a talented Java Developer with expertise in Swing and FX trading to join our team.

Responsibilities:
- Develop and maintain Java applications with a focus on Swing for front-end development.
- Collaborate with traders and quants to create and enhance trading and pricing tools.
- Implement real-time data processing and analysis to support trading operations.
- Build and optimize tools for pricing and risk management of FX assets.

Job Title: Java Swing Developer

Location: Bromley (Hybrid)

We are looking for a talented Java Developer with expertise in Swing and FX trading to join our team.

Responsibilities:
- Develop and maintain Java applications with a focus on Swing for front-end development.
- Collaborate with traders and quants to create and enhance trading and pricing tools.
- Implement real-time data processing and analysis to support trading operations.
- Build and optimize tools for pricing and risk management of FX assets.