Senior Software Engineer

TechShack; Stockholms kommun; On-site; SEK 1,219,000 - 1,460,000; Full time

Job summary

TechShack in Stockholm is seeking an experienced software engineer to build and develop an early-stage product. You will own development from initial technical decisions through production, shaping the product's evolution in a small team with direct impact.

You will work across the stack with TypeScript, React and Node.js, collaborating with founders to translate requirements into technical solutions and owning features from development to deployment.

Qualifications

• 5+ years of professional software engineering experience.

Responsibilities

• Build and ship new product features from the ground up.
• Develop across the stack using TypeScript, React and Node.js.
• Contribute to architectural decisions and the overall technical direction.
• Work directly with the founders to translate product requirements into technical solutions.
• Take responsibility for features throughout development, deployment and iteration.
• Use AI-assisted development tools where they add value.

Skills

TypeScript

React

Node.js

Production software

Independence

Product development

Early-stage experience

LLMs

AI agents

PostgreSQL

Cloud infrastructure

Tools

PostgreSQL

Cloud infrastructure

Job description

TypeScript / React / Node.js | Stockholm | Up to 120,000 SEK/month

We're looking for an experienced software engineer to help build and develop an early-stage product in Stockholm.

You'll work closely with the founders, taking ownership of development from the initial technical decisions through to production. It's an opportunity to work in a small team, influence how the product evolves and have a direct impact on what gets built. The role suits an engineer who enjoys solving problems, making pragmatic technical decisions and working across the stack, rather than focusing on a narrowly defined area of an established product.

The role:

• Build and ship new product features from the ground up
• Develop across the stack using TypeScript, React and Node.js
• Contribute to architectural decisions and the overall technical direction
• Work directly with the founders to translate product requirements into technical solutions
• Take responsibility for features throughout development, deployment and iteration
• Use AI-assisted development tools where they add value

We're looking for someone with:

• 5+ years of professional software engineering experience
• Strong TypeScript experience, ideally with both React and Node.js
• Experience building and deploying production software
• Good engineering fundamentals and sound technical judgement
• The ability to work independently and take ownership in a small team
• An interest in product development and understanding the problems the software is solving

Experience in an early-stage company, founding engineering role or greenfield environment would be particularly relevant.

Experience with LLMs, AI agents, PostgreSQL and cloud infrastructure is also valuable.

We're interested in engineers who can demonstrate what they've built and the decisions they've made along the way.

Details:

• Location: Stockholm
• Salary: Up to 120,000 SEK/month, depending on experience