Senior Front End Developer (React.js) - Contract

Senior Front-End Developer - contract
We seek a Senior Front-End Developer to join the Aequilibrium team as a contractor, working with our top global clients in the credit union, banking, or fintech sectors. You will be a key contributor to the development of innovative, high-scale financial and banking applications. The ideal candidate is a polyglot engineer who is equally comfortable architecting a Java microservice, optimizing a .NET Core backend, or building a high-performance React frontend.
What you will be doing:

• End-to-End Delivery: Build, develop, and maintain complex, responsive web applications from the ground up using a variety of modern stacks.
• Architectural Leadership: Design and implement modular, scalable, and reusable code structures that serve as the foundation for future development.
• Cross-Stack Integration: Collaborate with distributed teams to integrate diverse APIs and services (Java, .NET, Node.js), ensuring seamless data flow and system reliability.
• UI/UX Translation: Transform high-fidelity prototypes into performant, accessible, and pixel-perfect code.
• Performance Engineering: Optimize application performance across the entire stack, ensuring sub-second response times and cross-browser consistency.
• Mentorship & Quality: Lead code reviews, establish best practices, and mentor intermediate developers to elevate the team's technical bar.
• Agile Excellence: Drive continuous improvement within an Agile/SCRUM environment, participating in all ceremonies and contributing to process evolution.

• Seniority: 10+ years of professional experience in Full-Stack development, with at least 3 years in a Senior or Lead capacity.
• The "Triple Threat" Backend: Proven, recent experience developing production-grade applications in Java (Spring Boot), .NET (C# / .NET Core), and Node.js.
• Frontend Mastery: Expert-level proficiency in React.js (Fluency is mandatory), TypeScript, HTML5, and CSS3 (Sass/LESS).
• Modern Web Standards: 5+ years of deep experience with TypeScript and Python.
• Cloud Native: Hands-on experience with Azure backend systems and/or C# backends, including integration with Azure App Services, Functions, and Key Vault.
• API Design: Solid understanding of RESTful APIs and GraphQL; experience designing contracts that bridge diverse backend ecosystems.
• Testing Rigor: Extensive experience with testing frameworks (Jest, Mocha, xUnit, JUnit) and a "test-first" development mindset.
• Professional Services: Experience working in the Professional Services / Consulting industry, managing client expectations and navigating high-ambiguity projects.
• Education: Bachelor’s Degree in Computer Science, Software Engineering, or a related technical field.
• Status: Canadian resident with Citizenship or PR Status.

• Fintech Expertise: Direct experience working with Credit Unions, Banking, or Fintech platforms.
• Multi-Cloud: Experience deploying and managing applications across AWS and GCP in addition to Azure.
• Mobile: Familiarity with React Native or native mobile development.

• Competitive compensation
• Remote-first location
• Medical, dental, and extended health benefits (premiums fully covered by the company!)
• Employee bonus programs
• Team-bonding events

Learn more about our team:  aequilibrium.com/careers
Please note :
At Aequilibrium, we seek candidates who will contribute to our culture of valuing, respecting, supporting, and caring for each other. Diversity of thought and perspectives is critical to our success, and all applicants are considered regardless of sexual orientation, gender identity, race, color, age, disability, marital status, heritage, religious, or political beliefs.
Aequilibrium is trusted with highly sensitive information.
Upon joining our team, you may be asked to undergo security screenings, including a criminal record check.
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