Back End Developer

Company Description

NestAI builds next-generation technology – a lab for the brilliant and the bold, those who want to solve significant human and societal problems.

We're not here to be conventional, or do what’s already been done. We’re here to spark curiosity. To push boundaries and build for what’s next.

Backed by PostScriptum, NestAI is designed for the long-term — building boldly and developing physical AI that will shape the future.

Role Description

We are looking for an experienced Backend Cloud Engineer to join our engineering organization full-time in the Helsinki, Tampere, Turku or Oulu Metropolitan Areas.

In this role, you will focus on the core components that power our platform: designing, developing, deploying, and maintaining robust backend services, critical APIs, and complex integrations. You will work with modern server-side technologies and cloud platforms to build scalable, secure, and highly efficient solutions that handle significant load and interconnect varied systems. We value a willingness to learn and adapt; you will apply modern distributed systems practices, contribute to secure system designs and help ensure our architecture is ready for both cloud and on-premise deployments.

You will collaborate across the engineering organization to expose services securely and ensure smooth data flow throughout the platform.

Day-to-day responsibilities include:

• Design, development, testing, deployment and debugging of high-performance backend services and microservices.
• Building and operating scalable APIs that serve internal interfaces and external integrations.
• Database management, optimization and design, including schema and version management across relational and non-relational data stores.
• Implementing modern high-scale distributed systems practices, including utilizing message queues (e.g., Kafka, RabbitMQ, SQS) for asynchronous processing and event-driven architecture.
• Developing robust integrations to connect NestAI core systems with external third-party systems.
• Managing and optimizing cloud environments and deployments using Infrastructure as Code (Terraform).
• Demonstrating fluency in modern containerized environments: deploying and troubleshooting services in Kubernetes and working efficiently with Docker containers.
• Utilizing established CI/CD pipelines and ensuring system health via comprehensive observability (logging, monitoring, tracing) in production.
• Navigating system environments to debug and optimize application performance.
• Collaborating closely in agile development teams to deliver high-quality solutions.

Qualifications

• Proficiency in backend software development, with a strong focus on building scalable, high-availability architecture.
• Deep knowledge of modern backend programming languages and ecosystems, with a strong willingness to learn new technologies. Experience with Go or Python is a plus.
• Strong experience with cloud infrastructure (AWS, GCP or Azure) and practical DevOps practices, specifically including Kubernetes, Docker, and modern CI/CD tooling. Ability to design for cloud-agnostic and on-premise deployments is a plus.
• Proven experience designing and implementing systems using message brokers and asynchronous communication patterns for high-scale environments.
• Strong skills in Linux environments and database management (SQL and NoSQL).
• Excellent problem-solving abilities and attention to detail.
• Ability to work collaboratively in a team environment.
• Security expertise: While not a hard requirement, a strong grasp of secure programming practices, secure system design and experience with OIDC/OAuth2 flows or secrets management (e.g., Vault) is considered a significant plus.
• Experience with data pipelines and processing orchestration in AI/ML or related sectors is a plus.



Why Join Us?

At NestAI you get to work with world-class scientists and engineers, with building next-generation technology that will shape the future. As a PostScriptum company, we have a unique advantage in driving research excellence and impact at scale.