Senior Fullstack Engineer

Sunscrapers is a technology consultancy that empowers finance and healthcare leaders to succeed by leveraging cutting-edge software, data, and AI.

We combine world-class engineering, deep industry expertise, and proprietary know-how to deliver innovative, high-impact solutions. Specializing in software engineering, DevOps, data engineering, and data science, we design and build AI-powered data platforms and web applications tailored to each client’s unique needs.

Trusted by over 60 clients across the US, UK, and beyond, we consistently maintain a 4.9/5 client satisfaction rating, with partnerships averaging five years or more.

The project:

The client is an early-stage venture capital firm focused on intelligent business software with a Scaling Platform that has helped companies like Box, Bill.com, Hubspot, Docusign, JFrog, and WalkMe move from founder-led growth to a repeatable go-to-market machine.

As a Senior Fullstack Engineeryou’ll build and maintain the internal portfolio management and finance reporting application for the US-based venture capital firm. Your goal will be to develop a new frontend app replacing the old one, implement new features and gradually replace other old side frontend applications.

We’re looking for a Senior Fullstack Engineer to join a flagship project for a top-tier Silicon Valley venture capital firm managing multi-billion dollars in assets. This is a high-impact role on a mission-critical product: a portfolio management and financial reporting platform that helps early-stage startups—and their investors—track performance, unlock insights, and scale with confidence.

You’ll drive the development of a brand-new frontend application while extending and refining backend APIs and services. From building intuitive features with performance and UX in mind to strengthening security and evolving the microservices architecture, your work will directly shape how founders, investors, and partners understand data and make growth decisions.

You’ll be part of a senior, cross-functional team (engineering, design, product, QA, DevOps) working with a modern stack and lean, collaborative processes.

Your responsibilities will include:

• Developing new features according to the design with performance and UX in mind
• Collaborating with other frontend and backend devs to define schemas and required changes to existing backend API
• Close collaboration with Designer and Product Manager to assess new designs feasibility
• Taking care of frontend app security (regular penetration tests every 6 months) and frequent dependencies updates
• Implementing new features and extending current REST API endpoints in cooperation with frontend team
• Improving and refactoring (micro)services architecture
• Taking care of application security and updating dependencies on daily basis
• Writing clean and well-covered code

Requirements

What’s important for us?

• Expertise in TypeScript
• Proficiency in React its latest ecosystem, like hooks, react-query etc
• Proficiency in CSS and related tooling (Sass or Less)
• Experience with designing and consuming REST APIs
• Excellent command in spoken and written English, at least C1
• Attention to detail and sense of aesthetics, from clean code to beautiful UI
• Experience with Python and Django ORM

You will score extra points for:

• Proficiency in using Docker and docker-compose
• Experience with tabular / grid data components (new app uses AG Grid)
• Experience with tools like Figma
• Experience with PlayWright and Jest or equivalent tools
• Knowledge of JWT authentication or alternative protocols

Benefits

What We Offer:

• Work with a talented team redefining the global perception of Poland
• Flexible working hours and remote work
• Comfortable penthouse office in central Warsaw with all essential tools (MacBook, external monitor, ergonomic chairs)
• Fully equipped kitchen with fresh fruit, hot & cold beverages
• Multisport card & private medical care
• A culture of feedback – evaluation meetings, mentoring, and career growth opportunities
• Support for continuous learning – we encourage and invest in the professional development of our engineers

Sounds like a perfect place for you? Don’t hesitate to click apply and submit your application today!