Senior Software Platform Engineer
First seen by Alion on Oct 8, 2026.
Do you want to join the technological revolution? Tendium is looking for a Senior Software Engineer to join the team.
Tendium is the global pioneer in AI-driven public tender management, transforming how companies discover, analyze, and win government contracts. Our platform turns complex processes into something simple and transparent, empowering businesses to compete fairly for billions in public sector opportunities. We’ve been building our AI-native platform since 2018, leveraging a vast data moat, agentic AI, and tens of thousands of hours of R&D. Today, we serve large numbers of customers across Europe and are rapidly scaling.
Our Platform team has a broad and exciting ownership. As a member of our Platform team you will build foundational services that all our features need, security and developer experience as well as being in the forefront of AI development. You will make sure that we have the AI tooling we need to build with both speed and quality, and that our platform is secure and easy to monitor and work with. This is a role where you will spend time on building our product and internal tools as well as building SRE guidelines and best practices cross-team. The whole tech organisation consists of approximately 20 engineers split into different teams, where everyone knows each other.
Tech stack:
Microservice Architecture.
AWS based infrastructure: Fargate, Lambda, SQS, EventBridge, GraphQL, OpenAPI
Databases and Querying: DocumentDB (MongoDB), MySQL, S3Tables (Iceberg), OpenSearch, Athena
Languages: Python, TypeScript
Infrastructure and platform: CDK, Github Actions
Observability and tooling: CloudWatch, Aikido, PostHog
AI Tooling: Claude Code, Internal MCP Server
Infrastructure and platform: Hands-on experience with AWS (or equivalent cloud). Containerization (Docker), Infrastructure as Code (CDK or Terraform), and CI/CD pipeline design and maintenance (GitHub Actions).
API design and development: Hands-on experience designing and maintaining APIs, including REST (OpenAPI) and GraphQL, with a focus on consistency, versioning, and developer experience.
Software engineering: Strong proficiency in Python (or similar), including writing robust, testable, and maintainable code; familiarity with async programming patterns.
Architecture: Creating systems that scale both in performance, and maintenance.
AI Tooling: Integrates AI tooling effectively into daily workflows. Is actively trying new tooling and following new trends in the AI space.
Collaboration and communication: You enjoy collaborating both with your nearest team and with other teams. You are comfortable sharing knowledge and best practices.
Site reliability and operations: Experience defining and tracking SLOs/SLIs in large scale systems.
Cloud microservices: Hands-on experience building and maintaining microservice architectures using AWS services such as SQS, Lambda, Fargate/ECS (or close equivalents in another cloud).
Location: Based in Stockholm, within commuting distance from our office in central Stockholm.
Please note: We are currently unable to sponsor visa applications. Therefore, applicants must already have the legal right to work in Sweden.
We review applications on a rolling basis and will close the vacancy as soon as the position has been filled. Applications are accepted exclusively through Teamtailor.
For more information about what to expect, please read about our recruitment process here.
To make this process even more efficient, feel free to sign in to your Connect profile and add your references at any stage.
Ready to make an impact and grow with us? We'd love to hear from you!
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Equality and inclusion statement
At Tendium, we don’t just value diversity, we celebrate it. We’re building a workplace where everyone feels that they belong, where your voice is heard, and your experiences are respected. Different perspectives fuel our creativity and drive innovation, and we’re always looking for people who can bring something new to the team. Whoever you are, wherever you're from, we’d love to hear from you. Let’s shape the future together.