Senior Software Engineer - Data Team

Tendium AB; Stockholms kommun; On-site; SEK 900,000 - 1,300,000; Full time

Job summary

Tendium AB is seeking a Senior Software Engineer to join the Data team in Stockholm. The role focuses on building data-driven solutions for public procurements, shaping the roadmap, and delivering scalable backend systems.

The role emphasizes collaboration with cross-functional teams, strong Python/TypeScript skills, and hands-on experience with AWS services and data platforms. Based in Stockholm, candidates should be eligible to work in Sweden.

Qualifications

• Strong proficiency in Python and writing robust, maintainable code.
• Experience creating scalable architectures with SLOs/SLIs for large systems.
• Ability to integrate AI tooling into daily workflows and collaborate across teams.

Responsibilities

• Shape the Data team's roadmap by collecting feedback from customers and stakeholders.
• Research greenfield data products and collaborate with other teams.
• Own the backend systems and internal tooling, driving initiatives across engineering.

Skills

Python

TypeScript

Async programming

Collaboration

Tools

DocumentDB

Postgres

OpenSearch

Iceberg

CDK

Github Actions

CloudWatch

Claude Code

Internal MCP Server

SQS

Lambda

Fargate

Job description

Do you want to join the technological revolution? Tendium is looking for a Senior Software Engineer to join the Data team.

About Tendium

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.

If you want to know more about our culture and what you can expect when working at Tendium you can read more about it here.

What you'll do

The Data team is responsible for providing the data to our end customers to find and win public opportunities. One key product we provide is structured information around public procurements. The expectation is that you help us shape our roadmap, by getting feedback from customers, researching greenfield data products, and collaborating with other teams. From a technical perspective, the team owns the data domain end to end, from finding and ingesting data, to making that data readily available and ensuring SLOs on our data systems. Your team owns the backend systems, and internal tooling. We expect you to drive and suggest initiatives across the engineering organization.

Tech stack:

Microservice Architecture: Fargate, Lambda, SQS, EventBridge, GraphQL, OpenAPI

Databases and Querying: DocumentDB (MongoDB), Postgres, OpenSearch, Iceberg

Languages: Python, TypeScript

Infrastructure and platform: CDK, Github Actions

Observability and tooling: CloudWatch

AI Tooling: Claude Code, Internal MCP Server

What you'll bring:

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. Experience tracking SLOs/SLIs in large scale systems.

AI Tooling: Integrates AI tooling effectively into daily workflows both personally and for team flows.

Collaboration and communication: You enjoy collaborating across teams as well as non technical stakeholders, and customers. You are comfortable sharing knowledge and driving best practices.

Cloud : 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.

Bonus: Having worked in a data-heavy product with hundreds of external integrations and sources, where silent failures are common. Familiarity using LLMs as a data enricher.

Please note: At the moment we are not able to sponsor VISA applications, so you need to have the right to work in Sweden.

Equality and inclusion statement

At Tendium, we don’t just value diversity, we celebrate it. We’re building a workplace where everyone should feel 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.