Senior Android Developer

NestAI; Helsinki; On-site; EUR 70,000 - 96,000; Full time

Benefits offered by this job

Occupational healthcare

Regular team lunches

Mac or PC choice

Holiday allowance (50% of holiday pay)

Phone benefit

Job summary

NestAI in Helsinki is seeking a hands-on Android engineer to join the Edge Software team, building an Android app for planning and controlling unmanned systems. You will deliver a reliable operator experience and collaborate on fleet and asset management integration.

The role emphasizes clear technical communication, resilience with third-party dependencies, and mentoring peers while shipping robust mobile features in a mission-critical environment.

Qualifications

• Strong Android development experience with Kotlin.
• Experience with mobile architecture, state management, asynchronous work, and testing.
• Experience integrating mobile apps with networked devices or backend services.
• Experience building reliable user interfaces for complex or mission-critical systems.
• Clear technical communication and pragmatic quality practices.
• Resilience to work with complicated 3rd party dependencies.

Responsibilities

• Develop and maintain features across supported Android environments.
• Build clear and reliable workflows for mission planning, control, monitoring, and accessing media, images and video streams.
• Integrate situational-awareness data and device information from supporting services.
• Handle connectivity problems, delayed information, and partial failures clearly for the operator.
• Review code, mentor developers, and validate behavior with development and test partners.

Skills

Android development

Kotlin

C++

Python

Go

Mobile architecture

State management

Asynchronous work

Testing

Backend integration

UI engineering

Technical communication

Quality practices

3rd party dependencies

Job description

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 200 engineers and scientists and partners with leading European defence forces and industry.

Role Description

Join the NestAI Edge Software team developing an Android application for planning and controlling unmanned systems. Your primary focus will be building a reliable and understandable operator experience across the application. You will also help integrate fleet and asset management capabilities. This is a hands-on product engineering role for mobile devices.

Day-to-day Responsibilities

• Develop and maintain features across supported Android environments.
• Build clear and reliable workflows for mission planning, control, monitoring, and accessing media, images and video streams.
• Integrate situational-awareness data and device information from supporting services.
• Handle connectivity problems, delayed information, and partial failures clearly for the operator.
• Review code, mentor developers, and validate behavior with development and test partners.

Qualifications & Experience

• Strong Android development experience with Kotlin. Additional experience with C++, Python, or Go is a plus.
• Experience with mobile architecture, state management, asynchronous work, and testing.
• Experience integrating mobile applications with networked devices or backend services is valuable.
• Experience building reliable user interfaces for complex or mission-critical systems is valuable.
• Clear technical communication and pragmatic quality practices.
• Resilience to work with complicated 3rd party dependencies.

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.

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

• Occupational healthcare (currently provided by Mehiläinen)
• 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.