Full-stack TypeScript Developer ITDM $

Madfish

Madfish

Software Engineering

Ukraine

Posted on May 13, 2026

We are building a modern SaaS platform for legal firms focused on task management, matter management, billing, time tracking, and office/team-based permissions.

We are looking for a strong Full-stack TypeScript Developer (Middle+ / Senior) who can move quickly while maintaining clean architecture, type safety, auditability, and multi-tenant boundaries.

Technology Stack

  • Bun runtime / package manager / workspace tooling
  • TypeScript monorepo architecture
  • Backend: Hono, Kysely, PostgreSQL, Supabase Auth
  • Frontend: React 19, Vite, SWR, wouter, Tailwind v4
  • UI architecture based on Base UI + shadcn-style primitives
  • Database tooling: Postgres migrations, Kanel, kanel-kysely
  • Validation: Zod with generated DB types

Responsibilities

  • Develop backend APIs using Hono and shared service architecture
  • Write secure and type-safe Kysely queries with office/team/self permission scopes
  • Maintain multi-tenant architecture and access control boundaries
  • Extend PostgreSQL schema, migrations, triggers, RLS policies, and audit logs
  • Generate and maintain database types after schema updates
  • Build frontend functionality for tasks, matters, billing, and leads
  • Integrate Supabase Auth for authentication flows
  • Follow existing audit trail architecture using runAsUser/runAsEmployee/runAsSystem
  • Write clean, maintainable, and type-safe code without unnecessary abstractions

Requirements

  • Strong TypeScript experience
  • Solid PostgreSQL knowledge beyond CRUD:
    • constraints
    • triggers
    • transactions
    • views
    • RLS
    • JSONB
  • Experience with Kysely or other typed SQL query builders
  • Understanding of multi-tenant SaaS architecture
  • Strong React experience with hooks, forms, component composition, and data fetching
  • Experience working in monorepos
  • Understanding of authorization, auditability, and data ownership
  • Comfortable working with CLI tools and local development environments

Nice to Have

  • Experience with Hono
  • Experience with Bun
  • Experience with Supabase Auth/JWKS
  • Experience building B2B SaaS products
  • Experience with legal tech, billing, or task management systems
  • Experience with Tailwind v4 and Base UI
  • Experience with database code generation

Important Engineering Principles

  • No npm/pnpm usage — Bun only
  • Business logic must stay outside route handlers
  • Audit fields and timestamps must not be written manually
  • Supabase JS is used only for authentication
  • Keep solutions simple and maintainable
  • Respect tenant isolation and permission boundaries at all times

What We Offer

  • Competitive salary
  • Flexible work schedule
  • Professional development opportunities
  • Access to paid learning platforms
  • Opportunity to work on a modern TypeScript-first SaaS platform

If you are passionate about building scalable and type-safe applications with modern TypeScript technologies, we would love to hear from you.