Senior Full-Stack Engineer

Promptwatch; Amsterdam; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

MacBook Pro

Hybrid work in Amsterdam

Direct influence on product direction

Job summary

Promptwatch is seeking a product-minded fullstack engineer in Amsterdam to design and build scalable AI-focused platforms. You will work across the stack, shaping both what we build and how we build it, with ownership from development to deployment.

The role emphasizes building secure, scalable systems, collaborating with engineers, and delivering features used by thousands of customers daily. Join a fast-moving, high-impact team with a hybrid setup in central Amsterdam.

Qualifications

• Experience designing and querying relational databases (SQL/NoSQL).
• Experience building APIs (tRPC/REST).
• Familiarity with queues, async processing, or event-driven architecture.
• Ability to work across the stack and own features end-to-end.
• Focus on scalability, security, and performance.

Responsibilities

• Take features from product ideation through implementation, deployment, and monitoring in production.
• Build systems that are secure, scalable, and cost-effective, balancing technical and business requirements.
• Deliver features used by thousands of customers every day, giving you real, tangible impact.
• Collaborate closely with the team to ensure high-quality, maintainable, and reliable solutions.

Skills

Relational databases design

APIs design

Event-driven architecture

Full-stack development

Security and performance

AI-native development

Team collaboration

Cloud/deployment

Tools

tRPC

REST

Job description

Search is changing rapidly with the rise of LLMs and AI-generated answers. Customers increasingly rely on AI to get answers. Traditional SEO is not enough anymore, and companies need new ways to understand how they appear and influence their visibility across AI systems.

At Promptwatch, we’re enabling companies to monitor, track and act on the future of search. We analyze how brands appear across AI responses, tracking citations, sentiment, and visibility at massive scale.

We are handling over 2.6k events per second, store over 75m prompt responses each month and have collected over 26.8 billion insights. Thousands of companies rely on what we build to make decisions and strategise every day.

This is a fast-moving, developing space and we’re leading it.

We are a small, highly motivated, action-oriented team based in the center of Amsterdam, and what we’re building is delivering results.

The Role

We are looking for a product-minded fullstack engineer with the following qualities:

• Experience in designing and querying relational databases (sql, nosql)
• Experience building APIs (tRPC, REST)
• Familiarity with job queues, async processing, or event-driven architecture
• Ability to work across the stack and help shape both what we build and how we build it
• Ownership of features from development through deployment, ensuring they meet non-functional requirements such as scalability, security, and performance
• Familiarity with modern, AI-native development and the ability to use AI tools where they meaningfully improve speed, quality, or impact
• Interest in agentic workflows - pipelines that ingest, process, reason over, and act on large-scale data (prior experience is not required)
• Strong communication and collaboration skills, able to work effectively with a team of engineers to deliver high-quality solutions

Nobody here knew the full stack on day one — curiosity and willingness to learn matter more than experience with every technology.

• What You’ll Do
• Take features from product ideation through implementation, deployment, and monitoring in production
• Build systems that are secure, scalable, and cost-effective, balancing technical and business requirements
• Deliver features used by thousands of customers every day, giving you real, tangible impact
• Collaborate closely with the team to ensure high-quality, maintainable, and reliable solutions

You’ll love it here if you

• Are excited by the thought of working in a new and emerging industry
• Love challenges, learning and overcoming challenges at scale
• Excited to work in a fast-growing, high-impact space where product and engineering are tightly coupled
• Interest in AI systems, agentic workflows and modern development practices.

Compensation

• A top of the range Macbook Pro
• Office in central Amsterdam with a hybrid setup that trusts you to manage your schedule
• Direct influence on product and technical direction