Senior Frontend Engineer at Compstak

CompStak envisions a commercial real estate industry in which accurate and transparent data leads to better, faster deals for everyone. We gather critical information that is hard to access, then make it instantly and seamlessly available to our platform members.   Location: Belgrade, Hybrid (Currently, we are three days per week in the office, subject to change) Our Exchange & Enterprise applications are where our customers live every day: searching properties, analyzing markets, and making real decisions off our data. As a Senior Frontend Engineer, you’ll be one of the primary owners of these apps. You’ll shape how thousands of users experience our product – from performance and usability to the workflows they rely on to do their jobs. You’ll join a small, senior frontend team responsible for the main consumer-facing apps.  Responsibilities • Design and ship end‑to‑end features: complex search flows, data‑rich dashboards, property and portfolio views, saved searches, exports, and more • Work directly in our React 18 + TypeScript codebase, making architectural decisions that impact how we build features for years • Dive into real product problems: how to surface dense information clearly, how to keep heavy pages fast, and how to make advanced tools feel simple • Collaborate closely with design and product on UX, and with backend teams on clean API contracts • Improve our foundations: testing strategy, patterns for state management, performance, and code quality • Guide other engineers, effectively participate in code reviews, and help define and follow our frontend standards The environment & stack • Core: React 18, TypeScript, Yarn • State & data: @tanstack/react-query, remains of Redux and a set of domain‑specific providers • UI & styling: styled-components, radix-ui and our internal ui-kit • Maps & visualization: rich mapping experiences using Google Maps and Mapbox, plus analytics views and charts • Tooling & quality: Vite, Jest, ESLint (React, hooks, JSX a11y, custom rules), Prettier Required Skills & Experience • You’ve spent several years building complex React applications and you’re very comfortable in TypeScript • You’ve seen what works (and what doesn’t) in larger codebases and care about code structure, boundaries, and long‑term maintainability • You’re fluent in state management and data fetching patterns (React Query, SWR, etc.) • You naturally bring quality and ownership: you think about modularity, reusability, peer reviews, performance, and testing as part of “done” • You communicate clearly, enjoy collaborating with product/design, and like to give and receive feedback from other engineers Bonus experience that will stand out • Working with maps/geo UIs (Google Maps, Mapbox) • Experience with or desire to use modern AI-assisted development tools (e.g., Cursor, AI pair-programming / code review tools) to move faster while maintaining code quality • Tuning performance in large React apps: bundle size, rendering performance, and real‑user performance metrics We Offer • 25 days off per year: 21 days of vacation, plus an additional day for Slava, non-working Serbian holidays, in accordance with the Law, plus 3 days of 100% paid sick leave • You are covered with private health insurance, a package that will cover all your needs • We cover maternity and pregnancy leave with 100% of your earnings • Employee stock options • FitPass platform - because we care for your wellbeing as well • Quarterly activity and events budgets for each team and yearly company-wide team-building trip • Numerous perks in the office (Sweet Wednesday, Thursday office lunch, Movie nights…) About CompStak Launched in 2012, we’ve built a network of over 30,000 brokers, appraisers and research professionals across the country, using a unique crowdsourced model. Our clients enjoy the foremost lease and sale transaction data combined with a robust analytics platform. CompStak’s unique data and intuitive platform is used by the world’s largest real estate investors, lenders, brokers and appraisers to compare properties, underwrite investments and loans, close deals and track market trends.   CompStak has over 100 team members in the US and overseas; and we continue to grow. We’re backed by top VCs and industry players like Morgan Stanley, Canaan Partners, IA Capital, Transamerica, Moody’s, RealPage, 500 Startups, and Daily Mail Group, and have raised over $75m to date. Our HQ is in New York City, we have regional offices in Atlanta, Chicago and Los Angeles, and we have an international office in Belgrade, Serbia.   We pride ourselves on an environment that is fun, collaborative, and rewards hard work. We look forward to the value that future employees will add to our amazing teams!   CompStak is an equal opportunity employer that celebrates employees and applicants of all identities, backgrounds, abilities, and perspectives. We foster a welcoming work environment that supports diversity and inclusion, and we reject discrimination or harassment of any individual. If you are a person with a disability and require assistance with any part of the application process, please let us know. All employment decisions are made on the basis of qualifications, merit, and business need.