Senior Front End Developer – Contract

Aequilibrium

Senior Front-End Developer at Aequilibrium, working on high-scale financial and banking applications. Leading development teams and optimizing complex web applications in a remote environment.

Posted 5/15/2026contractRemote • 🇨🇦 CanadaSenior💰 CA$60 - CA$90 per hourWebsite

Tech Stack

Tools & technologies

AzureGraphQLJavaJavaScriptJestJUnitMocha.NETNode.jsPythonReactSCSSSpringSpring BootSpringBootTypeScriptVault

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

10+ years of professional experience in Full-Stack development, with at least 3 years in a Senior or Lead capacity.
Proven, recent experience developing production-grade applications in Java (Spring Boot), .NET (C# / .NET Core), and Node.js.
Expert-level proficiency in React.js (Fluency is mandatory), TypeScript, HTML5, and CSS3 (Sass/LESS).
5+ years of deep experience with TypeScript and Python.
Hands-on experience with Azure backend systems and/or C# backends, including integration with Azure App Services, Functions, and Key Vault.
Solid understanding of RESTful APIs and GraphQL; experience designing contracts that bridge diverse backend ecosystems.
Extensive experience with testing frameworks (Jest, Mocha, xUnit, JUnit) and a "test-first" development mindset.
Experience working in the Professional Services / Consulting industry, managing client expectations and navigating high-ambiguity projects.

Benefits

Comp & perks

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

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Full-Stack developmentJava.NETNode.jsReact.jsTypeScriptHTML5CSS3PythonRESTful APIs

Soft Skills

leadershipmentoringcollaborationcontinuous improvementAgileSCRUMcode reviewsbest practicesclient managementproblem-solving