cover image
Mission.dev

Fullstack/Backend Developer (API & AI Integration specialist)

Hybrid

Montreal, Canada

Junior

Full Time

26-01-2026

Share this job:

Skills

TypeScript SQL Problem-solving Databases node.js Software Development OpenAI PostGres gRPC

Job Specifications

Agreement type: This is a full-time employment role with direct hiring by the client.

Hybrid schedule: 3 days on-site in Mile End + 60 remote work days/year.

Location: Open to candidates based in Canada only.

Our company description

Mission is a platform for hiring, vetting, and managing software development talent.

It enables our clients to connect with the world’s best talent to build mission-critical software products.

About the client

The client is building the AI-powered platform transforming how capital is raised in private markets. Venture capital and private equity firms use their technology to run digital closings, streamline investor relations, unlock insights from LP interactions, and deliver a modern investor experience.

Backed by leading VC firms, they’re a small senior team shipping fast across a modern TypeScript, monorepo, and AI-native stack.

Their Mission: To make private markets more transparent, efficient, and human.

About the role

We’re looking for a Fullstack/Backend Developer specializing in APIs and AI integrations to build the next generation of investor workflows.

You will design and implement backend services, RPC endpoints, database structures, and LLM-powered features that help fund managers understand and communicate with LPs.

You’ll work across a modern, strongly-typed monorepo environment (Node.js, TypeScript, Twirp/Protobuf, Postgres/Kysely) and collaborate closely with product and frontend teams.

You’ll have deep ownership, real product influence, and the opportunity to build an industry-defining platform from the ground up.

What You’ll Do

Build new API endpoints and backend services in Node.js/TypeScript
Develop AI-powered investor workflows (summarization, insights, categorization)
Extend internal packages (RPC, utilities) across the monorepo
Design & optimize relational database schemas and queries (Postgres/Kysely)
Write robust unit and integration tests
Improve API performance and scalability
Experiment with AI/LLM integrations to unlock new product capabilities
Collaborate with frontend, product, and infra teams

What You Bring

4+ years backend-focused engineering experience
Strong Node.js + TypeScript fundamentals
Experience building clean, modular, type-safe APIs
Solid SQL + experience with relational databases
Familiarity with monorepos (pnpm, Turborepo)
Interest or experience in AI/LLM development
Strong testing, code quality, and problem-solving skills
Comfort working in a small, fast-paced, async-first senior team

Nice to Have

Experience with Protobuf/Twirp or gRPC
Prior LLM integrations (OpenAI, Claude, etc.)
Familiarity with SvelteKit or modern frontend frameworks
Open-source TypeScript contributions
Understanding of fund management, fintech, or investor workflows

Compensation & Benefits

Salary: $100,000–$160,000 CAD, based on value and experience
Meaningful early-stage equity
Health & dental coverage above market
20 vacation days + 5 sick days
Company-wide paid shutdown between Christmas and New Year
Annual offsites with the global team
Hybrid schedule: 3 days/on-site in Mile End + 60 remote work days/year

About the Company

Mission.dev is the next-gen staffing platform for software talent. We help you find, evaluate, and manage top software talent (contractors or direct hires) faster, smarter, and more efficiently. Powered by AI. Backed by real humans. Know more