Fullstack Developer / Software Company

Fullstack Developer (AI Assistant)

A client building software for the construction & installation industry is developing an AI assistant for their customers. The assistant helps users find information and get work tasks done in natural language, and it runs both as its own application and embedded in the client's other products. The team owns the assistant as a whole, from design to production.

They're looking for an experienced software developer to join the team. The role focuses on fullstack development, and you'll be building an AI service that's already in production.

Responsibilities:

• Design and build new features for the assistant, both in the backend and the user interfaces
• Develop LLM-based functionality, like the assistant's tools, agents and automations
• Build integrations to the client's other products together with the product & platform teams
• Develop indexing: content from the products, like documents and notes, is made searchable for the assistant so that answers are based on the customer's own data
• Secure implementation: the service is used by many customer companies, and each customer's data is kept strictly separate from the others
• Testing, code reviews, releases and monitoring the production service

Requirements:

• Strong experience with Java and Spring Boot development
• Experience designing and building REST APIs
• Experience with AWS and infrastructure as code
• Experience with relational databases (PostgreSQL)
• Good collaboration & communication skills

Beneficial:

• Experience using LLMs in application development (for example Spring AI, AWS Bedrock, vector search, MCP)
• React
• CI/CD pipelines (GitLab) and observability tools (like Datadog)
• OAuth2 and OIDC authentication
• Finnish language skills

Language: English, Finnish is a plus

Interested? Let me know at eeva.keinanen@witted.com or @Eeva_witted at Slack.