Senior Front - End Developer for Aequilibrium, developing high - scale financial applications for top global clients. Requires expertise in Java, .NET, and React.js with a focus on Agile methodologies.
About the role
- Software Engineer developing user-facing web applications for Tucows Domains. Focusing on reliability, maintainability, and speed of delivery while collaborating with design and development teams.
Responsibilities
- Develop and ship user-facing features using modern front-end technologies, ensuring they meet user needs and deliver measurable product value.
- Own work end-to-end, from feature discovery and spec clarification to implementation, testing, release, and production follow-up.
- Work across legacy and modern applications: Improve and stabilize existing codebases. Plan and execute incremental modernization and full migrations when required.
- Collaborate with UX/UI designers to translate design concepts into fully functional and interactive components, aligned with our team’s UI standards and design system.
- Determine and architect the structure of UI components and application patterns, focusing on efficiency, scalability, maintainability, and consistency across products.
- Build reusable/composable components and patterns that positively impact multiple projects and new products company-wide.
- Integrate front-end applications with back-end APIs in collaboration with back-end and full-stack developers, ensuring reliable data exchange and correct system behavior.
- Perform root cause analysis of issues identified in the field (including cross FE/BE boundaries), prevent recurrences, and improve overall system stability. Establish and maintain strong quality gates: Unit and integration testing. E2E testing (e.g., Playwright/Cypress). Visual regression testing where appropriate. CI checks and releases readiness.
- Participate in code reviews, enforce best practices, and provide constructive feedback to raise quality and consistency across the team.
- Use AI-assisted tools (e.g., Claude) as part of day-to-day development to accelerate delivery, while ensuring output verification, safe refactoring, and strong testing discipline.
- Ship and operate front-end changes end-to-end: release, monitor, and follow up on production issues.
- Deliver safely using feature flags, staged rollouts when applicable, and rollback-ready releases.
- Build and maintain E2E smoke tests (Playwright) for critical paths, and add visual regression checks when UI fidelity is essential.
- Use observability tooling (e.g., Sentry) to debug issues in the wild and reduce MTTR.
- Apply secure FE practices (token handling, XSS/CSRF awareness, dependency hygiene), including when leveraging AI-assisted code.
- Collaborate with engineering leads, product owners, project managers, and stakeholders to ensure a consistent and predictable product development process.
- Stay up-to-date with current technologies and protocols for web-based applications, ensuring our product offerings’ continuous improvement and relevance.
- Guide, support, and mentor engineers when needed, especially around design system usage, modular UI development, and spec-driven delivery.
Requirements
- Bachelor’s degree in Computer Science, Software Engineering, or equivalent work experience.
- Minimum of 5 years of experience delivering high-quality software solutions.
- In-depth understanding of front-end architecture patterns, state management, component-based development, and modern JS frameworks like React.js and Vue.js.
- Extensive experience in front-end development using HTML5 and CSS3 (Sass/SCSS).
- Proficiency in implementing responsive and accessible designs, focusing on cross-browser compatibility.
- Knowledge of performance optimization techniques, such as code splitting, lazy loading, and caching.
- Experience with build and package management tools like Vite, Webpack, Babel, or npm.
- Deep understanding of RESTful APIs and experience integrating front-end applications with back-end services.
- Solid knowledge of software engineering principles, design patterns, and best practices.
- Experience with version control using Git and agile development methodologies.
- Comfortable with agile methodologies, JIRA, and other project workflow tools.
- Build and ship features using a spec-driven approach, turning feature specs into implementation, tests, and measurable outcomes in production.
- Strong reasoning, problem-solving, and debugging skills, with keen attention to detail.
- Hands-on experience maintaining and modernizing legacy front-end applications, including safe refactoring, incremental migrations, and production releases.
- Practical experience using LLM-based tools (e.g., Claude) in an engineering workflow.
Benefits
- Health insurance
- Retirement plans
- Paid time off
- Flexible work arrangements
- Professional development
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