Strong Middle Full-Stack Engineer
Summary
Bliscore is hiring a middle full-stack engineer for its established FinTech SaaS product. Day to day you build features end to end (frontend and backend) using TypeScript, React, Next.js, Node.js, PostgreSQL, and Supabase, integrate third-party APIs/OAuth/webhooks, and work with AI/LLM-powered features, taking ownership from development through production.
Full-Stack Engineer (TypeScript / Next.js)
We’re looking for a "Full-Stack Engineer" to join a product team building and evolving a sophisticated (FinTech SaaS platform).
This role is a great fit for a product-minded engineer who is comfortable working across both (frontend and backend), can quickly navigate an established production codebase, and enjoys taking ownership of features from development through production.
Tech Stack:
TypeScript · React · Next.js · Node.js · PostgreSQL · Supabase · Tailwind CSS · Vercel
What You’ll Do
Build and enhance product features across frontend and backend
Develop and maintain APIs and server-side functionality
Work with PostgreSQL and data-intensive application logic
Integrate third-party APIs, OAuth providers, and webhooks
Contribute to authentication, authorization, and multi-tenant functionality
Work with AI/LLM-powered product features and integrations
Troubleshoot production issues and improve application reliability
Take ownership of features throughout the full development lifecycle
What We’re Looking For
Strong commercial experience with TypeScript, React, and Next.js
Solid full-stack development background
Strong experience with PostgreSQL
Experience with Supabase or a similar PostgreSQL + authentication stack
Experience building and maintaining REST APIs
Good understanding of authentication, authorization, and permissions
Experience with multi-tenant SaaS applications
Hands-on experience integrating third-party APIs, OAuth, and webhooks
Experience working with an established production SaaS product
Ability to understand and confidently work within an existing codebase
Strong ownership mindset and ability to work independently
English В2
Nice to Have
Experience integrating AI/LLM solutions such as OpenAI, Anthropic, or similar
Background in FinTech, banking, financial, or data-intensive products
Experience with Vercel and Sentry
Experience with financial or banking APIs
Knowledge of Recharts / D3 or other data visualization tools
Experience with document processing (PDF, DOCX, Excel)
Swift / SwiftUI experience is a plus
About the Role
We’re looking for someone who sees themselves as a Full-Stack Product Engineer, rather than being focused exclusively on frontend or backend development.
You’ll be joining an established product with real users, complex integrations, and meaningful technical challenges. The role requires someone who can understand the bigger picture, make pragmatic engineering decisions, and take ownership of delivering reliable solutions to production.
If you enjoy working on complex SaaS products, solving real product challenges, and having a tangible impact on how a platform evolves, we’d love to hear from you.
What’s In It for You?
Career Growth — Opportunities to develop and advance.
Performance Reviews — Regular feedback and support.
Work Anniversaries — Special gifts to celebrate milestones.
Flexible Work — Hybrid or remote (Lviv office available).
Mentorship — Guidance from experienced professionals.
Accounting Support — We handle the paperwork.
Paid Time Off — 18 vacation days + 5 sick days per year.
Extra Leave — 10 additional days off annually.
Free Office Lunches — Enjoy meals on us.
Team Events — Gatherings, gifts, and a welcoming atmosphere.