Senior Full Stack Developer (FE+BFF)

About Us

At Campaignswell, we're revolutionizing marketing analytics with our AI-powered predictive platform tailored for apps, games, and e-commerce businesses. Our cutting-edge technology delivers precise lifetime value (LTV) predictions within hours, empowering clients to scale their advertising efforts confidently. By seamlessly integrating product and marketing analytics into a unified dashboard, we provide actionable insights that drive growth and profitability. Founded in 2023 and headquartered in San Francisco, our dynamic team is committed to transforming the marketing landscape through innovation and data-driven strategies.

Responsibilities

• Develop and evolve the frontend of a marketing analytics platform.

• Build and maintain BFF services in TypeScript/Deno (Supabase Edge Functions).

• Design REST API for domain entities mostly CRUD.

• Implement dashboards, charts, and cohort reports (Recharts, MUI DataGrid Pro, react-grid-layout).

• Contribute to architecture decisions (Feature-Sliced Design), participate in code review, uphold code quality standards.

Requirements

5+ years of commercial frontend development experience, with:

• Advanced TypeScript proficiency, experience working in strict mode.

• Commercial experience with React 18, Redux Toolkit.

• Experience designing and building REST/serverless APIs.

• Solid SQL skills, understanding of RLS / row-level security models.

• Experience writing tests (Vitest / React Testing Library or similar).

• Experience with CI/CD (GitLab CI and/or GitHub Actions) and Docker.

• English proficiency: B1.

Nice to Have

• Design REST/serverless APIs for integrations with ad platforms (Meta Ads, Snapchat Ads, Reddit Ads).

• Familiarity with MCP / LLM agent integrations.

• Experience with Supabase (Auth, Edge Functions, migrations).

• Experience with MUI Pro (DataGrid Pro, Date Pickers Pro), Recharts.

What We Offer

• Competitive salary + performance bonus.

• Fully remote with flexible working hours.

• Home office stipend and learning & development budget.

• 21 paid vacation days.

• Regular team offsites and a culture that actually lives its values.

Campaignswell is an equal opportunity employer. We celebrate diversity and are committed to building an inclusive team. If you're passionate about helping brands grow through smarter data and love collaborating across disciplines to deliver impact, we’d love to hear from you!