Role: Senior UI Developer
Type: Contract (B2B)
Duration: 6 months rolling – huge pipeline of work
Location: Warsaw office – Remote
Company: Leading Investment Bank

About the Role
We are seeking Senior Frontend Developers to join a dynamic team building front-office sales and trading applications on a cutting-edge microservices platform. You will work closely with traders and cross-functional teams to deliver high-quality, scalable solutions that drive business value.

Key Responsibilities

Develop and maintain enterprise-level frontend applications using React and TypeScript.
Collaborate within a Scrum team to deliver robust software solutions.
Translate complex business requirements into efficient, reusable code.
Implement and maintain testing frameworks (unit, integration, functional).
Provide technical direction and contribute to system architecture.
Work with backend layers (Java wrapper, WebSockets API) and run servers locally.

Tech Stack

React, TypeScript (mandatory)
AG Grid (advanced usage)
Charting libraries (e.g., Highcharts)
Testing frameworks (e.g., VTest)
Backend exposure: Java, WebSockets
Bash scripting, CSS, HTTP security (CORS)

What We’re Looking For

Minimum 5+ years of experience in frontend development.
Strong problem-solving skills and ability to work independently.
Excellent communication for cross-team collaboration.
Exposure to financial markets and risk systems is a plus.

Why Join?

Work on high-impact trading applications for a leading investment bank.
Collaborate with a global team of 100+ engineers.
Access to modern technologies and scalable deployment solutions.

4x Senior Frontend Developers positions with a major financial services company in Krakow. The team focuses on developing front office sales and trading applications for an exciting microservice platform, utilising cutting-edge technologies to support Rates and Credit business areas.
 
Contract: B2B, 6 month rolling - 4 year project
Location: Krakow
Pay rate: up to 1700 PLN per day
 
Your Role:
Part of a scrum team working on delivering business value through software
Implement and deliver high-quality software solutions
Demonstrate skills in working with trading desks and other teams in the bank
Understand business requirements and translate them into code
Design, build and maintain efficient reusable code
Build and maintain unit/integration/functional/non-functional testing framework
Provide technical direction and system architecture
 
Essential Requirements:
Strong Proficiency (5+ years) in the following technologies: React, TypeScript, JavaScript ES2020, HTML5, CSS3
Experience with NodeJS, NPM, PNPM
Excellent problem-solving and analytical thinking
Self-starting attitude and the desire to take ownership of requirements from start to finish
Proactive, comfortable working in dynamic environments with fast-paced deliveries and changing requirements
Excellent communication skills
 
Nice-to-have Requirements:
Experience in using Redux, Redux-Saga, AG-Grid, LESS/SASS, NodeJS and Lodash
Understanding of FP, OOP, REST APIs, real-time data-streaming and messaging systems, agile development processes, and automation technologies for testing and CI.
Investment banking/financial services domain knowledge is a big plus
 
 
 

Overview:

We’re looking for an experienced Market Data Business Analyst to act a liaison between market data vendors, quantitative teams, and trading desks. This is a unique role combining technical expertise with strong stakeholder engagement, bridging the gap between data engineering and front-office needs.

Location:

London (Hybrid) - 2-days in-office per week

Key Responsibilities:

• Partner with quants and traders to capture requirements and translate them into actionable data solutions.
• Drive onboarding and transformation of vendor datasets, ensuring quality and compliance.
• Use Python and SQL for data validation, wrangling, and analysis.
• Provide subject matter expertise on market and reference data across asset classes.
• Communicate insights effectively, “telling the story” behind the data to technical and non-technical audiences.

What We’re Looking For:

• Strong background in sell-side banking, with experience working closely with quants and traders.
• Expertise in market data or reference data, and familiarity with major vendors.
• Hands-on technical skills: Python, SQL; AWS experience is a plus.
• Ability to influence stakeholders and lead cross-functional initiatives.
• Excellent communication and problem-solving skills.

Nice to Have:

• Data warehousing experience.
• CFA or FRM certification.
• Exposure to Agile delivery practices.

Overview:

We’re looking for an experienced Market Data Business Analyst to act as the key liaison between market data vendors, quantitative teams, and trading desks. This is a unique role combining technical expertise with strong stakeholder engagement, bridging the gap between data engineering and front-office needs.

Location:

London (Hybrid) - 2 days in-office per week. 

Key Responsibilities:

• Serve as the primary point of contact for market data vendors and internal teams.
• Partner with quants and traders to capture requirements and translate them into actionable data solutions.
• Drive onboarding and transformation of vendor datasets, ensuring quality and compliance.
• Use Python and SQL for data validation, wrangling, and analysis.
• Provide subject matter expertise on market and reference data across asset classes.
• Communicate insights effectively, “telling the story” behind the data to technical and non-technical audiences.

What We’re Looking For:

• Strong background in sell-side banking, with experience working closely with quants and traders.
• Expertise in market data or reference data, and familiarity with major vendors.
• Hands-on technical skills: Python, SQL; AWS experience is a plus.
• Ability to influence stakeholders and lead cross-functional initiatives.
• Excellent communication and problem-solving skills.

Nice to Have:

• Data warehousing experience.
• CFA or FRM certification.
• Exposure to Agile delivery practices.

Full Stack Developer – Financial Markets Location: Montreal Sector: Information Technology, Financial Markets & Treasury

Are you ready to take ownership of the full development lifecycle and build impactful solutions for the financial markets? Our client, a leading institution in the sector, is seeking a Full Stack Developer to join their dynamic Financial Markets development team.

The Role

As a Full Stack Developer, you will:

• Full Cycle Development: Manage the entire process from gathering business requirements to design, implementation, testing, deployment, and ongoing maintenance.
• Technical Ownership: Enhance and maintain existing applications, ensuring high standards of performance and code quality.
• Collaboration: Partner with product managers, designers, and QA teams to deliver solutions aligned with business needs.
• Problem-Solving: Apply strong analytical skills to troubleshoot issues and optimize system performance.
• Deployment & Maintenance: Oversee deployments and ensure reliable support for applications.
• Mentorship: Guide junior developers and foster a collaborative, growth-oriented environment.

The Team

You’ll be joining a close-knit team of four developers known for their autonomy, adaptability, and collaborative culture. With a hybrid work model and flexible schedules, you’ll enjoy a supportive environment that values both professional growth and quality of life.

Prerequisites

• 3+ years of professional full stack development experience with a strong project portfolio.
• Front-end expertise: HTML, CSS, JavaScript, plus frameworks such as Angular or React.
• Back-end expertise: Python or Node.js.
• Assets: PostgreSQL, Git, Agile methodologies, CI/CD pipelines, cloud technologies (AWS, Docker, Kubernetes).
• Strong analytical and problem-solving skills.
• Financial markets knowledge is an asset.
• French language proficiency required.

Benefits

Our client offers a competitive compensation package and a wide range of flexible benefits, including:

• Health and wellness programs
• Flexible group insurance
• Generous pension plan
• Employee Share Ownership Plan
• Employee and Family Assistance Program
• Preferential banking services
• Telemedicine and virtual sleep clinic access
• Opportunities to contribute to community initiatives

Why Join?

This is an opportunity to work in a dynamic environment where innovation, collaboration, and inclusivity are at the heart of the culture. You’ll be empowered to make an impact, supported by cutting-edge tools, and encouraged to grow your expertise.

Interested? Apply now and bring your ambitions to life with a client that values trust, adaptability, and empowerment.

Job Title: React Developer (AVP)

Location: London (Hybrid – 2 days in-office)

Team: Brand new FX Data & Analytics team

About the Role:

Join a newly formed team building business-critical dashboards for trading and sales desks. You’ll work closely with the business, delivering interactive analytics tools that provide real-time insights into day-to-day operations, P&L, and more. The tech stack is React-based UI, with Java/Python on the backend and a data layer. The environment is greenfield, with significant ownership and the chance to shape frameworks from the ground up.

Key Responsibilities:

• Develop and enhance interactive dashboards for trading and analytics
• Collaborate directly with trading desks and stakeholders
• Build and maintain React-based UIs, leveraging WebSockets for real-time data
• Contribute to framework design and implementation
• (VP) Provide technical leadership and deeper FX/e-trading expertise

Must-Have Skills:

• Strong React development experience (WebSockets a plus)
• FX knowledge beneficial but not essential
• Confident communicator, comfortable working with business users and quants
• Willingness to work across the stack (some Java/Python exposure is a plus)

Nice-to-Have:

• Experience in banking or trading environments
• Previous work with data visualisation or analytics platforms

Team & Culture:

• Small, collaborative team with direct business exposure
• Opportunity to influence technology choices and frameworks
• Flexible on requirements for the right attitude and skills

Interview Process:

4 stages – screen, technical deep dive, psychometric test, and business interview 

Job Title: React Developer (VP & AVP)

Location: London (Hybrid – 2 days in-office)

Team: Brand new FX Data & Analytics team

About the Role:

Join a newly formed team building business-critical dashboards for trading and sales desks. You’ll work closely with the business, delivering interactive analytics tools that provide real-time insights into day-to-day operations, P&L, and more. The tech stack is React-based UI, with Java/Python on the backend and a data layer. The environment is greenfield, with significant ownership and the chance to shape frameworks from the ground up.

Key Responsibilities:

• Develop and enhance interactive dashboards for trading and analytics
• Collaborate directly with trading desks and stakeholders
• Build and maintain React-based UIs, leveraging WebSockets for real-time data
• Contribute to framework design and implementation
• Provide technical leadership and deeper FX/e-trading expertise

Must-Have Skills:

• Strong React development experience (WebSockets a plus)
• E-Trading and FX experience required; (AVP) FX knowledge beneficial but not essential
• Confident communicator, comfortable working with business users and quants
• Willingness to work across the stack (some Java/Python exposure is a plus)

Nice-to-Have:

• Experience in banking or trading environments
• Previous work with data visualisation or analytics platforms

Team & Culture:

• Small, collaborative team with direct business exposure
• Opportunity to influence technology choices and frameworks
• Flexible on requirements for the right attitude and skills

Interview Process:

4 stages – screen, technical deep dive, psychometric test, and business interview 

Job Title: AVP – Python/Java Developer

Location: London (Hybrid, 2 days in-office)

About the Role:

Join a brand-new team at a leading global investment bank, working at the heart of FX Data & Analytics. You’ll be building and supporting the core data and analytics layer that bridges downstream data sources and upstream React-based UIs. The work is a blend of Python and Java, with a strong focus on Python for data transformation and analytics, and Java for connecting to front-end systems.

Key Responsibilities:

• Develop and maintain the data and analytics layer (Python/Java) supporting business-critical dashboards.
• Collaborate closely with quant developers and business stakeholders.
• Consolidate and enhance fragmented solutions into a robust, scalable platform.
• Support the team in connecting to diverse data sources and running analytics.
• Help shape the technical direction of a new team and greenfield projects.

What We’re Looking For:

• Strong experience with Python and Java (framework experience; not core Java/low-latency focus).
• E-Trading experience.
• Confident working with business users and stakeholders, including quants.
• Flexible on the Python/Java split (more Python work in the future).
• FX knowledge is a plus, but not essential.

Team & Culture:

• New team, collaborative environment.
• Opportunity to work closely with the business and have a direct impact.

We’re looking for an experienced engineer to take ownership of CI/CD pipelines and improve developer experience in a fast scaling environment. This role is ideal for someone who thrives on solving complex problems and wants to make a measurable impact on build speed, reliability, and overall development workflows.

You’ll work on a large E-Trading Platform supporting multiple languages including TypeScript, Scala, Python, and Golang. Using Bazel, you’ll help optimize builds and deployments while collaborating closely with development teams to streamline processes and tighten feedback loops.

What you’ll do:

• Manage and enhance CI/CD pipelines for efficiency and reliability
• Work with GitHub Actions, Docker, Kubernetes, and Terraform
• Leverage cloud platforms such as AWS, Azure, or GCP
• Utilise Bazel for builds, testing, and deployments
• Continuously improve developer experience and build performance

What we’re looking for:

• 6+ years of engineering experience with a strong DevOps background
• Expertise in CI/CD practices and cloud infrastructure
• Familiarity with containerization and orchestration tools
• Passion for improving build processes and developer efficiency
• Strong problem-solving skills and ability to work in a fast-paced environment

This is an opportunity to work on challenging technical problems in a collaborative, forward-thinking team. If you’re ready to take on a role where your contributions directly impact productivity and innovation, we’d love to hear from you.

We’re working with a leading technology-driven financial services firm to identify an experienced Systems Reliability Engineer. This role is critical to ensuring the stability and performance of complex, distributed systems that underpin trading operations.

About the Role

You’ll be responsible for improving reliability, scalability, and maintainability across the technology stack. The position involves real-time operational responsibilities such as monitoring, incident management, and recovery, alongside proactive initiatives like automation and process optimisation. You’ll collaborate closely with engineering and business teams to ensure systems run smoothly and efficiently.

Key Responsibilities:

• Oversee technical operations for mission-critical trading platforms.
• Develop tools for monitoring and automation to reduce manual intervention.
• Troubleshoot issues across hardware, software, and network layers.
• Participate in change management processes and post-incident reviews.
• Document configurations and mentor teams on best practices for reliability.

What We’re Looking For:

• Strong experience with Linux, Python, Bash, and Git.
• Hands-on experience with automation tools (e.g., Ansible or similar).
• Solid understanding of networking concepts (TCP/IP, multicast, packet-level troubleshooting).
• Familiarity with data centre workflows and hardware (Cisco, Arista, Solarflare).
• Ability to work in a fast-paced environment and prioritise effectively.