At a Glance
- Tasks: Design and develop advanced Java and Python applications with AI features.
- Company: Join the London Stock Exchange Group, a leader in financial markets.
- Benefits: Enjoy healthcare, retirement planning, paid volunteering days, and wellbeing initiatives.
- Other info: Collaborative environment with opportunities for mentorship and career growth.
- Why this job: Be at the forefront of AI innovation in global financial markets.
- Qualifications: 10+ years in backend software engineering with strong Java and Python skills.
The predicted salary is between 60000 - 80000 £ per year.
We are seeking a highly skilled and hands-on Senior Java Engineer with AI proficiency to help build the next generation FTSE Russell Index Platform. This platform underpins the calculation and distribution of FTSE Russell’s global family of indexes and requires advanced engineering, high precision data processing, and deep collaboration across global teams.
This is a deeply technical role focused on designing, building, integrating, and operationalising modern software and AI-driven capabilities across internal platforms and client facing products. You will work with innovative technologies, contribute to complex algorithmic design, and drive engineering excellence in a high-performance, data-intensive environment.
Key Responsibilities
- Design, develop, and maintain complex Java and Python applications using modern engineering practices.
- Build / embed AI powered features into mission critical systems.
- Architect and enhance services that support large scale, performance critical index computations.
- Collaborate with Product Managers, UX, and engineering teams globally to deliver high quality products.
- Lead projects end-to-end through requirements, design, development, testing, deployment, and operations.
- Build and maintain automated test suites to ensure performance, scalability, and security.
- Diagnose production issues, identify root causes, and deliver Level 3 support and fixes.
- Conduct peer reviews, provide technical leadership, and mentor junior engineers.
Required Experience & Skills
- 10+ years of hands-on backend software engineering experience.
- Support the organisation’s AI adoption journey.
- Develop and enhance intelligent solutions using LLMs, LangChain/LangGraph, and agentic AI frameworks.
- Establish engineering best practices for safe, scalable, traceable and production ready AI deployments across internal platforms and external product suites.
- Strong algorithms, data structures, problem solving skills, and ability to translate business problems into scalable solutions.
- Good command of coding standards and strong understanding of both high level and low level software design.
- Expertise in: Core Java, Python, Building highly distributed, data intensive systems, Microservices, REST APIs, RDBMS (Oracle/SQL Server/Postgres), CI/CD tools (Jenkins/GitLab), DevOps automation, Docker, Kubernetes, JVM profiling & performance optimisation.
- Prior exposure to Level 3 production support.
Preferred / Nice-to-Have Skills
- Experience leading or mentoring a team of engineers.
- Experience within financial services or with financial market data.
- Familiarity with in-memory caching, Spring Boot, Redis, Kafka.
- Experience with BDD frameworks such as Cucumber, JBehave, or Karate.
- Background as a Scrum Master or experience running Agile teams.
What We’re Looking For
A proactive, creative engineering leader who enjoys solving complex problems, working hands-on with modern technologies, and driving AI enabled innovation. If you’re passionate about building resilient, intelligent, data intensive systems that power global financial markets, we’d love to hear from you.
Benefits
LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.
Equal Opportunity
We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.
Privacy Notice
Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.
Senior Java Engineer in London employer: Dormont Manufacturing Co
At London Stock Exchange Group (LSEG), we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. As a Senior Java Engineer, you will have the opportunity to work with cutting-edge technologies in a high-performance environment, while benefiting from tailored support such as healthcare, retirement planning, and paid volunteering days. Our commitment to employee growth is evident through mentorship opportunities and a focus on AI-driven solutions, making LSEG a rewarding place for those passionate about shaping the future of financial markets.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Java Engineer in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Dormont Manufacturing Co or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Dormont Manufacturing Co.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Dormont Manufacturing Co.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Dormont Manufacturing Co that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Java Engineer in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Dormont Manufacturing Co.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Dormont Manufacturing Co and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Dormont Manufacturing Co
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Dormont Manufacturing Co uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
