Full-Stack TypeScript Developer

Posted 3 Hours Ago
2 Locations
In-Office or Remote
18K-36K Annually
Entry level
Artificial Intelligence • Software
The Role
Build and ship end-to-end production features across APIs, databases, user interfaces, and testing. Work primarily with TypeScript, React, Next.js, NestJS, PostgreSQL, and related technologies. Integrate third-party services, maintain scalable systems, debug production issues, write automated tests, and make architectural improvements. The role requires ownership, proactive communication, independent execution, and effective use of AI coding tools in a remote, async-first team.
Summary Generated by Built In
About Us

We are an AI-native product development company working with serial entrepreneurs, successful business owners, and world-class experts to build innovative products and agentic systems in HR Tech, EdTech, and Health Tech.

Our Founder: Startup veteran with multiple leadership roles as Head of Product and Engineering (4 exits), and a long-time lecturer at the University of Toronto Department of Computer Science.

What makes us different:

  • AI-native development approach (Claude Code subscription provided)

  • Work closely with successful serial entrepreneurs, business owners, or executives

  • Real production systems serving thousands of business users

  • Small, high-performing distributed team

  • Focus on outcomes not hours

  • Remote-first flexible work environment

The Role

Join our core team as a full-stack developer working on one of our client engagements. You'll own features end-to-end and ship high-quality features faster.

Team Structure (you'll work alongside):

  • 2 Developers

  • 1 Designer

  • 1 Product Manager

  • 1 executive

Contract: Long-term individual contractor

Location: Remote (Latin America, Eastern Europe, West Asia, or Canada)

Timezone: 3-5 hours daily overlap with EST preferred

English: Advanced in reading and writing and high-intermediate in verbal communication required

What You'll DoCore Responsibilities

You are not expected to have all of these and we will support your learning and growth

  • Build and ship complete features independently from product specifications & prototypes

  • Own end-to-end: API design → database schema → UI implementation → Testing

  • Write production-ready, reliable code that scales to thousands of users

  • Work primarily in TypeScript, sometimes in JavaScript, other languages based on need

    • One of our repos is a medium-sized repo mostly built in JS that we’d like to slowly migrate to TS (~150k LOC)

  • Leverage AI coding tools (Claude Code) to accelerate development as needed

  • Integrate third-party services: AWS S3, Stripe, OpenAI, Mailgun

  • Take initiative on technical improvements and architectural decisions

  • Maintain and improve production systems with high attention to quality

Primary Tech Stack (varies by project)
  • Backend: NestJS, TypeORM, PostgreSQL, Node.js (TS/JS)

  • Frontend: React 18, Next.js, Redux Toolkit, Tailwind CSS, MUI

  • AI Tools: Cursor IDE, Claude Code (subscriptions provided)

  • DevOps: GitHub, Slack, Sentry, Jest, Docker, Railway, MS Azure

  • Workflow: Kanban-based, continuous delivery

What You Get
  • Competitive pay (1500-3000 USD depending on experience)

  • Flexible to live and work from anywhere with optional office space in Yerevan with our partner team

  • Focus on impactful work with minimal politics, meetings, extra work

  • Opportunity to work at the forefront of latest development best practices

  • Mentorship and guidance from senior engineering leaders

What You NeedTechnical Competencies

You can demonstrate ability to:

  • Build production-ready applications in TypeScript (or JS)

  • Clarify and scope unclear issues when needed

  • Design and implement REST APIs with modern frameworks

  • Work with relational databases (PostgreSQL) and ORMs

  • Ship complex React applications with Next.js and state management

  • Write automated tests as part of your standard workflow

  • Debug production issues independently and ship reliable fixes

  • Use AI coding tools effectively to accelerate development

Who You Are
  • Ownership mindset - deliver features you're proud of

  • Great talent with high potential - eager to grow and develop your skills

  • Self-directed and proactive - take ownership, minimal hand-holding needed

  • High attention to detail - clean code, proper error handling, edge cases matter

  • Strong communicator - clear written updates, proactive about blockers

  • Driven to learn - stay current with latest technologies and best practices

Nice-to-Have
  • AI/ML API integration (OpenAI, Claude, Gemini, etc.)

  • Background in HR Tech, Health Tech, or MarTech products

  • Docker and AWS deployment experience

How We Work

AI-native: Claude Code subscriptions provided - use AI as needed

Async-first: GitHub for code, Slack for communication, written over meetings

Self-managed: We don’t manage you. You show initiative, discipline, and organization.

Kanban flow: Pick up tasks, ship when ready, no sprint ceremonies

TypeScript-first: Primary language across most projects

Code quality: Every PR reviewed, tests required, Sentry monitoring

Direct collaboration: Work with PM, designer, and business owners directly

Hiring Process
  1. Initial screening (30 min) - Technical capabilities, work & expectation alignment

  2. Sample project (3-6 hours) - Take-home realistic scenario to give you a sense of what you'll work on.

  3. (Optional: Meet our office and partner team in Yerevan)

  4. Paid trial project (1 week) - Work on actual feature

  5. Final decision - Offer or feedback

Timeline: 2-3 weeks start to finish


To Apply

Include:

  1. Brief intro (5 sentences):

    1. Your relevant experience (You can use your resume to make it simple)

      1. Tech stacks and level of experience

      2. Business production software

      3. AI coding tools (Claude Code, Cursor, Copilot, etc.)

      4. Example of a complex feature/product you built and owned independently

  2. Preferred monthly rate (optional)

We're looking for: Someone with great talent and potential who wants to grow, can take ownership of features independently, and consistently delivers production-ready, reliable code. If you love TypeScript, embrace AI tools, and thrive with minimal direction, we want to hear from you.

Skills Required

  • Ability to build production-ready applications using TypeScript or JavaScript
  • Ability to design and implement REST APIs with modern frameworks
  • Experience working with relational databases, especially PostgreSQL, and ORMs
  • Ability to build complex React applications using Next.js and state management
  • Ability to write automated tests as part of the development workflow
  • Ability to debug production issues independently and deliver reliable fixes
  • Effective use of AI coding tools to accelerate development
  • Advanced English reading and writing proficiency
  • High-intermediate English verbal communication proficiency
  • Self-directed, proactive ownership and strong communication
  • AI or machine learning API integration experience
  • Background in HR Tech, Health Tech, or MarTech products
  • Docker and AWS deployment experience
Am I A Good Fit?
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The Company
6 Employees
Year Founded: 2024

What We Do

Qatalyst Labs is a Toronto-based, bootstrapped AI-first product studio operated by Agile Evolutions Inc. It builds software on demand for selected partners while also developing independent products. Its lean team combines product engineers and AI systems to diagnose business needs, decide whether to build, buy, or skip, and implement working software. The company serves organizations seeking practical, outcome-focused technology solutions.

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