TRCI-26-06736

Senior Frontend ReactJS Developer

This is a contract Senior Frontend ReactJS Developer role in Wroclaw, building and maintaining React-based portfolio reporting applications. The core requirements are 8+ years of hands-on frontend development and strong React, TypeScript, JavaScript, GraphQL, REST API integration, Vite, and Git branching and release workflow skills. The work includes modernizing applications, migrating legacy screens, troubleshooting API and performance issues, and supporting QA and production releases. ExtJS migration, enterprise design systems, AG Grid, Apollo Client, microservices, and financial-services or wealth-management knowledge are preferred advantages. The description references Agile, TDD, DevOps, and cloud/containerized environments; it does not specify a work mode, and the 8–10 years supplied in the structured input aligns with the stated 8+ years minimum.

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Position summary

Location: Poland
Workplace: Hybrid
Employment: Contract
Experience: Minimum 8 years and Maximum 10 years

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Role overview

Why This Role Matters.

Your Impact

Deliver Enterprise Value

Help organisations solve complex business problems through modern technology, consulting expertise and measurable outcomes.

Collaboration

Work Across Teams

Collaborate with consultants, architects, engineers and client stakeholders throughout the project lifecycle.

Growth

Learn Continuously

Gain exposure to enterprise technologies, certifications, mentoring and real-world project experience.

Career Path

Grow With Ubique

Build a long-term consulting career with opportunities to take on greater responsibility and leadership over time.

Responsibilities

What You'll Be Doing.

Every role at Ubique contributes directly to solving meaningful business challenges for our clients.

Develop and maintain features within React-based portfolio reporting applications, including saved report packages, report generation and search functionality.

Modernize existing applications by migrating them to Vite and an enterprise design system.

Support the migration of legacy ExtJS applications and screens to React.

Build, integrate and troubleshoot GraphQL and REST APIs between front-end applications and back-end microservices.

Diagnose issues such as slow or failing API queries, incorrect request payloads and front-end performance problems.

Deploy UI builds to QA environments, manage release branches, and support regression testing and production releases.

Work closely with back-end developers, QA teams, release management and product owners to deliver business and regulatory improvements.

Contribute to Agile development, Test Driven Development and DevOps practices.

Bachelor's or Master's degree, preferably in Computer Science or a related discipline.

Minimum 8 years of hands-on front-end development experience, preferably within banking or financial services.

Strong proficiency in React, TypeScript and JavaScript. Mandatory

Hands-on experience with GraphQL, such as Apollo Client, and REST API integration, including debugging communication between browser applications and back-end services. Mandatory

Technology stack

Tools & Technologies.

The platforms and technologies you'll use to build modern, enterprise-grade solutions.

React

Required

ReactJS

Required

TypeScript

Required

TS

Required

JavaScript

Required

JS

Required

GraphQL

Required

Apollo Client

Required

REST API

Required

RESTful services

Required

Vite

Required

Git

Required

Git branching

Required

ExtJS

Required

AG Grid

Required

enterprise design system

Required

microservices

Required

front-end performance

Required

memory leaks

Required

cloud development

Required

Requirements

Skills & Experience.

We value curiosity, collaboration and continuous learning. If you don't meet every requirement but believe you can make an impact, we'd still love to hear from you.

Essential

Required Qualifications

8+ years of hands-on front-end development

React

TypeScript

JavaScript

GraphQL

REST API integration and debugging

Vite

Git branching, version control, and release workflows

Preferred

Nice to Have

ExtJS-to-React migration

Enterprise UI/design systems

AG Grid

Apollo Client

Microservices integration

Wealth management and portfolio reporting

Performance returns, holdings, or financial reporting knowledge

Cloud-based development environments

Containerized deployments

Agile, Test Driven Development, and DevOps practices

Bachelor's or Master's degree, preferably in Computer Science or a related discipline

What you'll gain

More Than Just A Job.

We're committed to helping every team member grow professionally, personally and technically while working on meaningful projects.

Global Exposure

Collaborate with international clients and multicultural teams on enterprise programmes.

Continuous Learning

Expand your expertise through mentoring, certifications and hands-on project experience.

Career Growth

Take ownership, develop leadership skills and grow your consulting career over time.

Flexible Working

Hybrid and remote collaboration designed around trust and delivering exceptional outcomes.

People First

Join a supportive culture where collaboration, respect and long-term relationships come first.

Enterprise Projects

Work on meaningful technology initiatives for leading organisations across industries.

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