Company

NestAI is a European AI lab for defence delivering the adaptive operating system for modern battlefield operations. We develop adaptive intelligence for unmanned and command systems: AI that continuously learns from operational data and adapts to changing conditions.

NestOS is our open, modular and interoperable platform that enables this at scale and keeps capability evolution under sovereign European control. Founded in 2025 by Peter Sarlin, whose previous company Silo AI became Europe's largest AI acquisition, NestAI brings together over 150 engineers and scientists and partners with leading European defence forces and industry.

Role Description

In this position, we have two primary paths depending on your strengths and career interests: Internal Product R&D and Forward Deployed Engineering (FDE).

• Internal Product R&D: You will focus on building, scaling, and maintaining the core infrastructure and cloud-based applications that power our long-term product vision.

• Forward Deployed Engineering (FDE): Embedded directly in our customer's development environment, FDE squads shorten the path from development to fielded capability, validating product capability where assumptions are tested against operational reality. This path is dynamic and highly impactful, where you will navigate shifting environments, collaborate with external stakeholders, and solve complex engineering challenges where adaptability is key.

Regardless of the path, you will work with modern web technologies such as React, Node.js, and major cloud platforms (GCP, Azure, or AWS) to build scalable, secure, and efficient solutions.

Day-to-day responsibilities include:

• Design, development, testing, deployment, and debugging of web applications.

• Building and operating backend services, APIs, and databases.

• Managing and optimizing cloud environments and production deployments.

• DevOps practices: Kubernetes, Docker, Terraform, CI/CD, and observability across cloud and on-prem environments.

• Collaborating closely in agile teams to deliver high-quality solutions.

• Interfacing directly with key stakeholders to understand requirements, adapt to diverse technical environments, and deploy tailored solutions for FDE roles.

Qualifications

• Deep experience (minimum of 5 years or equivalent experience) in software development: Full Stack or specialized domain expertise.

• Knowledge of the full web development stack, cloud infrastructure, and DevOps practices.

• Strong skills in Linux environments and database management.

• Excellent problem-solving abilities and a strong attention to detail.

• For the Forward Deployed (FDE) path:

  • A versatile generalist profile; you enjoy a changing scenery and feel comfortable operating across different technical ecosystems.

  • Strong interpersonal and communication skills, with the ability to confidently collaborate with external partners and translate business needs into engineering reality.

• Pluses: Practical platform engineering, security expertise (OIDC/OAuth2, Vault, compliance), or experience with AI/ML data pipelines.

Why join NestAI

At NestAI, you’ll build meaningful, real-world technology as part of a world-class team of engineers, scientists, and experienced professionals. You’ll work on systems where reliability genuinely matters, contribute to Europe’s security and resilience, and solve problems that demand depth, trust, and craftsmanship.

If you want to build with purpose — and with leading experts in the field — you’ve come to the right place.

Perks & Benefits

We offer a growing set of practical benefits to support your work and wellbeing, day to day:

• Occupational healthcare (currently provided by Mehiläinen)

• Epassi Flex benefit (sports, culture, commuting, wellbeing)

• Lunch benefit (25% tax-free coverage)

• Auntie (mental wellbeing services)

• Regular team lunches and all-hands events

• Your choice of Mac or PC

• Holiday allowance (50% of holiday salary)

• Phone benefit according to company policy (subscription and device)

We are continuously developing and expanding our benefits as we grow.

Practicalities

Employment is subject to applicable security screening (including SUPO, where required).

NestAI is an equal opportunity employer. We consider all applicants based on their skills, experience, and potential.

We are currently unable to provide visa sponsorship or international relocation support for this position. Candidates must already be based in Finland or in the EU and have a valid work permit for this region at the time of application.