Hybrid Senior Frontend Developer

at Octopus HR

• Job title: Senior Frontend Developer
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: No Education Requirement
• Tech skills: GraphQL, JavaScript, Next.js, Node.js, Postgres, React, Redux, SQL, TypeScript
• Location requirements: Hybrid, Ottawa, Canada

About the role

• Senior Front End Developer defining technical strategies and ownership of codebases for a growing fintech startup. Collaborate on solutions and optimize user experience for financial applications.

Responsibilities

• Define and drive the front-end technical strategy and architecture decisions
• Own the entire front-end codebase, component library, and design system
• Establish front-end best practices, coding standards, and development workflows
• Make critical technology decisions that shape the product's future
• Lead technical discussions with Product, Design, and Backend teams
• Build and optimize complex data grid interfaces displaying large financial datasets
• Implement sophisticated table components with sorting, filtering, grouping, and real-time updates
• Create intuitive financial dashboards with interactive charts and data visualizations showing forecasts, scenarios, and variance analysis
• Build compelling visual representations of financial data using modern charting libraries (line charts, bar charts, waterfall charts, heatmaps, etc.)
• Handle client-side data transformations and state management for complex financial calculations
• Optimize rendering performance for data-heavy visualizations with millions of data points
• Develop and maintain reusable, composable component systems using Next.js and React best practices
• Build pixel-perfect interfaces from Figma designs with meticulous attention to detail
• Implement and evolve the design system for consistency across the application
• Create beautiful, accessible UI using Tailwind CSS utility-first approach
• Own front-end performance - optimize rendering for data-heavy financial calculations and visualizations
• Implement smart caching strategies and memoization for complex component trees
• Ensure buttery-smooth interactions even with millions of data points
• Build intuitive user flows that make complex financial operations feel simple
• Champion accessibility and best practices across all interfaces
• Build lightweight Node.js endpoints and API routes when needed to support front-end features
• Collaborate closely with Back end team to define API contracts and data structures
• Develop serverless functions or Next.js API routes for data processing and third-party integrations
• Write SQL queries and work with databases (PostgreSQL) for data retrieval and manipulation
• Consume RESTful and GraphQL APIs effectively with proper error handling and loading states
• Understand backend data models to build efficient front-end data flows
• Contribute to API design discussions from a front-end perspective
• Troubleshoot integration issues and optimize data fetching patterns
• Work closely with Product and Design to translate vision into technical execution
• Mentor and guide junior developers as the team grows
• Conduct code reviews and elevate the overall code quality
• Contribute to hiring and building the front-end team
• Foster a culture of excellence in front-end development

Requirements

• 5+ years of professional front-end development experience with production React applications
• Proven experience owning front-end codebases and making architectural decisions independently
• Expert-level proficiency in React and Next.js - you understand React internals, hooks patterns, and performance optimization deeply
• Deep TypeScript expertise - you write type-safe code and leverage advanced TypeScript features
• Strong Tailwind CSS skills - you can rapidly build responsive, beautiful interfaces with utility classes
• Experience building complex data grid systems - you've worked with large datasets, virtual scrolling, and high-performance table rendering
• Strong product sense - you think about user experience and can push back constructively on designs
• Proven track record shipping polished, production-ready UIs with excellent attention to detail
• Strong understanding of modern JavaScript (ES6+), async patterns, and browser APIs
• Experience with state management solutions (Context API, Zustand, Redux, or similar)
• Solid understanding of responsive design, CSS Grid, Flexbox, and mobile-first development
• Strong API consumption skills - you know how to work effectively with RESTful and GraphQL APIs
• Practical backend experience - comfortable writing Node.js code, API routes, and basic SQL queries when needed
• Experience with Git/GitHub workflows and collaborative development
• Excellent communication skills and ability to work independently in a fast-paced environment
• Entrepreneurial mindset - you thrive with autonomy and can drive initiatives from concept to completion.