Senior Front End - Full Stack Developer H/F
Octopus HR
Senior Front End Developer
Front-End Expert (80%) with Backend Development Capabilities (20%)
We’re partnering with Pluvo, a growing fintech startup, to find an experienced Senior Full Stack Developer to join their team at a critical stage of scale.
If you love solving complex performance challenges, optimizing systems for scale, and working with cutting-edge technologies — this role is your chance to make a direct impact on a product used by finance teams every day. Technical Leadership & Architecture
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
Lead technical discussions with Product, Design, and Backend teams
Building Data-Intensive Interfaces
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
js and React best practices
Create beautiful, accessible UI using Tailwind CSS utility-first approach
Performance & User Experience
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 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
js API routes for data processing and third-party integrations
Write SQL queries and work with databases (PostgreSQL) for data retrieval and manipulation
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
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
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
- Solid understanding of responsive design, CSS Grid, Flexbox, and mobile-first development
- Practical backend experience - comfortable writing Node.js code, API routes, and basic SQL queries when needed
- Experience with AG Grid or similar enterprise data grid libraries (Tanstack Table, React Data Grid)
Familiarity with ShadCN/ui component library for building accessible, customizable components
js or other Node.js frameworks for building more complex APIs
Experience working with PostgreSQL or other relational databases at scale
Understanding of database design, indexing, and query optimization
Experience with Radix UI primitives and building accessible UI components
Knowledge of data visualization libraries (Recharts, D3, Chart.js, or similar)
Experience building financial software, dashboards, or BI tools
Experience with animation libraries (Framer Motion, React Spring)
Knowledge of testing frameworks (Jest, React Testing Library, Playwright, Cypress)
Experience building and documenting design systems (Storybook)
Familiarity with CI/CD pipelines and deployment workflows
Experience with AWS services (Lambda, RDS, S3) or similar cloud platforms
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