At a Glance
- Tasks: Join a dynamic team to modernise financial systems using Java, Kotlin, and React.
- Company: Grid Dynamics, a leader in tech consulting and product engineering.
- Benefits: Competitive salary, flexible schedule, medical insurance, and professional development.
- Other info: Collaborative environment with opportunities for career growth and innovation.
- Why this job: Work on cutting-edge projects that make a real impact in finance.
- Qualifications: Strong Java/Kotlin and React experience; passion for complex engineering challenges.
The predicted salary is between 60750 - 74250 £ per year.
The Opportunity
- We are partnering with a
- Tier 1 investment bank on a major, multi-year technology transformation within its global
Prime Finance Equities business.
The Equity Accelerator programme is focused on modernising the technology backbone of the business — re-engineering core trading and post-trade systems, developing new data and market-expansion platforms, and delivering advanced client capabilities including cross-margining and credit financing .
This is a highly hands‑on engineering opportunity working within a complex, financially critical production environment. You will help replace legacy architecture with event-driven, cloud-native systems designed for institutional-grade stability, performance and scalability.
This is not a greenfield Java project .
You will work on live, business-critical systems, making architectural decisions, solving complex engineering problems and collaborating with experienced engineers and stakeholders across the Prime Finance ecosystem.
Responsibilities
The Role
- We are looking for a
- Senior Full Stack Engineer with strong JVM experience across
- Java/Kotlin and modern
React/Type Script .
You will be responsible for delivering functionality across the full technology stack, from event-driven backend services through to modern user-facing applications and real‑time data experiences.
The successful candidate will combine strong software engineering fundamentals with practical experience of capital markets, trading or post-trade environments .
Key Responsibilities
- Build and enhance event-driven JVM services using Java and Kotlin.
- Develop modern React/Type Script applications for demanding financial users.
- Deliver user-facing functionality for capabilities such as cross-margining and credit financing.
- Build real-time interfaces using Web Sockets.
- Re-engineer core trading and post-trade systems into modern, event-driven services.
- Modernise legacy components while maintaining stability across a live production platform.
- Design systems around failure handling, ordering guarantees, replay semantics and data integrity.
- Develop robust frontend architecture using Redux or similar state-management technologies.
- Implement secure, performant frontend applications with appropriate authentication and security controls.
- Practise TDD and shift-left testing across the full stack, including unit, integration and E2E testing.
- Work with tools such as Jest, Cypress and Playwright.
- Contribute to trunk-based development, CI/CD and frequent production releases.
- Work directly with business stakeholders and upstream/downstream engineering teams.
- Use AI-assisted and agentic development tools to accelerate legacy analysis, test generation, prototyping and refactoring.
Requirements
Essential Experience
- Strong commercial experience as a JVM engineer, with expert-level Java skills.
- Kotlin experience or a strong interest and ability to learn Kotlin.
- Strong commercial experience with React and Type Script, including production frontend development.
- Experience designing and building event-driven systems using message-passing and/or event-sourcing patterns.
- Understanding of failure handling, message ordering, replay and data consistency.
- Strong frontend architecture experience, including complex state management such as Redux.
- Experience consuming real-time data through Web Sockets and integrating with APIs.
- Strong understanding of web performance and security.
- Demonstrable TDD experience across unit, integration and E2E testing.
- Experience with testing frameworks such as Jest, Cypress or Playwright.
- Hands-on experience within or alongside a capital markets trading or post-trade environment.
- Understanding of areas such as trade lifecycle, booking, position management, cashflows, settlement, wires, client reporting and accounting.
- Experience working with CI/CD, trunk-based development and iterative delivery.
- Experience delivering frequent, zero-downtime production releases.
- Ability to operate autonomously within complex production environments and contribute to architectural decisions.
- Technology Environment
- Backend
- Java, Kotlin, Kafka, Solace, TIBCO EMS, SQL Server, Mongo DB, S3/Object Storage
- Frontend
- React, Type Script, Java Script, HTML, CSS, Redux, Web Sockets
- Build & Delivery
- Vite, Webpack, Jenkins, Harness, CI/CD, Docker, Kubernetes, Open Shift
- Observability & Security
- Open Telemetry, ELK, Grafana, token-based authentication, Hashi Corp Vault, Cyber Ark
- Git Hub Copilot, agentic coding tools and modern AI models
- What We’re Looking For
This role would suit an engineer who enjoys working on complex, high‑impact financial systems rather than simply delivering isolated features.
You should be comfortable taking ownership, challenging technical decisions constructively, working directly with stakeholders and understanding the business domain behind the technology.
You will need to be equally comfortable working across backend JVM services and modern frontend applications , with a strong focus on engineering quality, testing, performance and production stability.
Nice to have
Desirable Experience
Experience in any of the following would be highly beneficial
- Prime Brokerage
- Synthetic / Swap products
- Cash Equities
- Corporate Actions
- Regulatory reporting including 871(m), EMIR and Mi FID
- Risk and valuation system integration
- Modernising and refactoring large-scale legacy systems
- Frontend architecture at scale, including micro-frontends and monorepos
- Core Web Vitals and rendering performance
- CSP and frontend security hardening
- SQL Server / T-SQL
- Mongo DB
- Kafka or comparable event-streaming platforms
- Kubernetes / Open Shift
- Cloud-native engineering and operational practices
- Open Telemetry, ELK and Grafana
- AI-first or agentic development workflows
- We offer
- Opportunity to work on bleeding-edge projects
- Work with a highly motivated and dedicated team
- Competitive salary
- Flexible schedule
- Benefits package - medical insurance, sports
- Corporate social events
- Professional development opportunities
- Well-equipped office
About Us
Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services.
Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation.
A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & Dev Ops, application modernization and customer experience.
Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.
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Senior Full Stack Java/Kotlin & React Engineer – Equity Prime Finance employer: Grid Dynamics
Grid Dynamics is an exceptional employer, offering a dynamic work environment where innovation thrives. As a Senior C# / WPF Engineer, you'll engage in cutting-edge projects within a collaborative team, benefiting from a competitive salary, flexible schedules, and comprehensive professional development opportunities. Our commitment to employee growth, coupled with a strong emphasis on engineering quality and a supportive culture, makes this an ideal place for those looking to make a meaningful impact in the financial technology sector.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Full Stack Java/Kotlin & React Engineer – Equity Prime Finance
✨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 Grid Dynamics 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 Grid Dynamics.
✨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 Grid Dynamics.
✨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 Grid Dynamics 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 Full Stack Java/Kotlin & React Engineer – Equity Prime Finance
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 Grid Dynamics.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Grid Dynamics 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 Grid Dynamics
✨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 Grid Dynamics 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.
