Software Engineer - Full Stack (Medior & Senior)

Stellar; Amsterdam; Hybrid; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Equity

Job summary

Stellar is seeking software engineers (medior to senior+) to scale our AI voice agent platform in Amsterdam. You will build scalable backend services in Go and Node.js, and craft intuitive frontends in React.

Join our early engineering team to help shape architecture, development practices, and product roadmap. We value in-person collaboration and do not offer remote-only roles in Amsterdam.

Qualifications

• 4+ years of professional software experience
• Full-stack experience across frontend to backend
• Proficiency in Go and/or Node.js/Typescript/React

Responsibilities

• Build performant, enterprise-grade APIs and backend services in Go and Typescript (Node.js)
• Develop Stellar's Studio frontend in React, TypeScript and NextJS
• Design scalable, fault-tolerant architecture for high-volume real-time conversations
• Work on Stellar's AI agent framework at the intersection of software and AI engineering
• Build integrations with customer systems (CRMs, support tools)
• Improve platform performance, observability and developer experience
• Help shape early engineering culture and mentor teammates

Skills

Go

Node.js

Typescript

React

Next.js

Education

4+ years professional software experience

Tools

Encore Cloud

GCP

Job description

Software Engineer - Full Stack (Medior & Senior)

Amsterdam, the Netherlands Full-time €70.000 - €100.000 + equity

Stellar's AI voice agents let companies have incredibly human support calls with their customers at scale. Established brands such as Q-Park, Landal, Roompot, Vanbreda and NVM already let Stellar's agents answer their support calls. We have a long list of well-known brands in earlier stages of the sales & implementation funnel.

Stellar's agents can operate alongside human support employees, independently resolving up to 70% of customer requests without requiring any human intervention.

Our product distinguishes itself through:

• Remarkably human-like audio conversations at extremely low latency
• An intuitive agent editor interface, that makes it easy for companies to design and iterate on their AI customer service agents
• An AI agent framework built for enterprise standards, with sophisticated safety mechanisms built-in

Since our public launch less than a year ago we've rapidly grown to a team of 10 extremely talented colleagues. With tens of thousands of conversations already flowing through the Stellar platform and proven traction with enterprise and mid-market companies, we're on a mission to rapidly conquer the conversational AI market. We believe in giving our team members the trust, ownership, and tools to make an outsized impact from day one.

About the role

Stellar is looking for software engineers (accepting applications ranging from medior to senior+ level) to help us scale our AI voice agent platform.

We're looking for team members who are self-starters and able to work across the entire stack - from building scalable enterprise-grade backend services in Go and Node (Typescript) to crafting intuitive user interfaces in React.

As one of the first members of our engineering team, you'll play a vital role in Stellar's journey and have the opportunity to help shape our architecture, development practices, and product and engineering roadmap.

This role is based out of our Amsterdam office. We value in-person collaboration and do not offer remote-only roles.

• Golang
• Typescript
• Node.js
• React
• Next.js
• Encore Cloud
• GCP

If you're strong in at least either Typescript or Golang, entrepreneurial, and eager to learn, we'd still love to talk.

What you'll do

• Build performant, enterprise-grade APIs and backend services in Go and Typescript (Node.js)
• Develop Stellar's Studio frontend in React, TypeScript and NextJS, to allow companies to effectively design, test, deploy and monitor their AI voice agents
• Design a scalable, fault-tolerant system architecture that can handle large volumes of concurrent real-time audio conversations & agent interactions while maintaining low latency
• Work on Stellar's AI agent framework, at the intersection of software engineering and AI engineering
• Design and implement a platform that meets enterprise standards in terms of security, compliance, resilience and data privacy
• Build API integrations with systems used by our customers (e.g., CRMs, customer support systems, internal APIs) to enhance the capabilities of Stellar's agents
• Improve platform performance, observability, and developer experience to ensure we can operate as a high velocity engineering team
• Help shape the early engineering culture for a young and growing tech startup, and help coach and mentor future team members

Who you are

• At least 4+ years of professional experience building and shipping software to production (we're accepting applications ranging from medior to senior+ level)
• Comfortable with Go, Node.js, Typescript and/or React (bonus if you know all of these)
• Experience building across the full stack, from frontend to backend to infrastructure level
• Proactive, self-directed, and excited to work in a fast-paced startup environment with a high degree of autonomy

You'll thrive here if you

• Are a self-starter looking for a role with a high degree of ownership, at a young and fast-growing company
• Enjoy working across the full technology stack, rather than specialising on a smaller portion of our codebase
• Enjoy solving hard engineering problems at the intersection of software engineering and AI engineering (including low latency (voice) infrastructure and designing enterprise-grade systems)

You'll be joining at a pivotal time in our growth, as Stellar has already proven strong traction and is currently rolling out its AI voice agents at multiple reputable companies, with many more companies in exploratory pilots. As one of Stellar's early software engineers, you'll have a large degree of ownership, a meaningful impact on what and how we build, and a clear path to grow along with the company as we further scale up the team in the near future. You'll also have an opportunity to work on software at the bleeding edge of AI capabilities. You'll be joining a team of high performing colleagues coming from scale-ups such as Framer, Bird and Adyen.

EU work authorization required. No visa sponsorship available.

Ready for the future of customer service?