Principal Java Developer, ThinkMarkets

Contractor/Remote

Salary not provided

Docker

Kubernetes

Java

Kafka

RabbitMQ

SpringBoot

ChatGPT

Senior and Expert level

Remote from Canada, Europe, UK, US

More information about location

Multi-asset online brokerage

Be an early applicant

Multi-asset online brokerage

201-500 employees

B2CB2BCryptocurrencyTradingLearning

Be an early applicant

Salary not provided

Docker

Kubernetes

Java

Kafka

RabbitMQ

SpringBoot

ChatGPT

Senior and Expert level

Remote from Canada, Europe, UK, US

More information about location

201-500 employees

B2CB2BCryptocurrencyTradingLearning

Company mission

To enhance the trading journey by providing excellent conditions, cutting-edge tools, in-depth educational resources and world-class customer support.

Job

Company

Role

Who you are

We are looking for a senior-level Java engineer who thrives in complex environments and wants to elevate the engineering bar within a multidisciplinary trading platform ecosystem
This is not a traditional Java developer role
7+ years of backend Java development, ideally in fintech, trading, or low-latency/high-availability systems
Expertise in Java 11+, Spring Boot, microservice design patterns, and system decomposition strategies
Strong understanding of multithreading, memory management, distributed transactions, and security
Familiarity with code generation workflows, AI copilots, or prompt engineering (e.g. ChatGPT, GitHub Copilot)
Deep experience with CI/CD pipelines, containerized environments (Docker, Kubernetes), and observability stacks
Ability to critically evaluate and improve AI-generated code for correctness, scalability, and clarity
Strong communication skills and ability to drive projects forward independently and collaboratively

Desirable

Experience working with LLM-based tools or contributing to AI-driven developer platforms
Familiarity with FIX protocol and real-time data distribution in financial systems
Experience with domain-driven design, event-driven architecture, and reactive programming (e.g. Reactor, Vert.x)

What the job involves

You will be working on cutting-edge architecture initiatives, rewriting monolithic systems into modular microservices, and integrating AI-assisted development into daily workflows using our proprietary LLM agent, Windsurf
You’ll be the go-to expert for complex backend solutions and an engineering force multiplier across teams that are currently focused on feature-level development and integrations
Lead the development and decomposition of legacy monoliths into scalable, resilient Java-based microservices
Review and refactor AI-generated code from Windsurf, ensuring accuracy, performance, and maintainability
Own critical backend services end-to-end including design, testing, deployment, and documentation
Collaborate closely with architects, DevOps, and platform leads to set modern engineering standards
Mentor and support mid-level engineers by bringing clarity, performance thinking, and clean code practices
Participate in design reviews, API definition, and build out of messaging-based systems (Kafka, RabbitMQ)

Our take

ThinkMarkets is a multi-award-winning provider of online trading services. With solutions spanning stocks, ETFs, futures and more, this long-established market powerhouse is committed to making trading accessible to everyone.

To this end, the company supplies a robust learning hub alongside its trading services. This enables it to support better literacy in trading so that more people can work the space with success.

Since its founding in 2010, ThinkMarkets has continuously expanded its offering and kept pace with advancements in the industry. This is evidenced by its reception of both the Investors’ Chronicle Award and TechRadar Award in 2024, highlighting its dedication to innovation.

Steph

Company Specialist at Welcome to the Jungle

Insights

Trustpilot (4.3)

Company

Funding (1 round)

Feb 2022

$30m

LATE VC

Total funding: $30m

Company benefits

Work flexibility: Enjoy flexible working hours and adjust your workday to your lifestyle
Career growth: Advance your career with opportunities in multiple departments across the globe
Technology: Utilise state-of-the-art technology no matter what department you choose
Continuous learning: Accelerate your growth at a tech company that stands at the forefront of innovation

Company HQ

Chicago Loop, Chicago, IL

Leadership

Nauman Anees

(Co-Founder & CEO)

Co-founded the company back in 2010 and has been CEO ever since.

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