Senior Backend Developer

Xensam AB; Stockholms kommun; Hybrid; SEK 669,600 - 892,800; Full time

Benefits offered by this job

Free drinks and snacks

Office massages

Annual destination trip for employees

Flexible remote work options

Job summary

Xensam AB is seeking a Senior Backend Engineer to enhance the services powering the Xensam platform. The role involves designing and maintaining scalable backend systems using Rust while working closely with teams like Product, Engineering, and Security to deliver high-quality solutions.

The position also offers mentoring opportunities, architectural input, and a dynamic work environment that supports career growth.

Qualifications

• Extensive experience in backend software development.
• Strong experience building production systems with Rust.
• Strong understanding of distributed systems, APIs, and backend architecture.

Responsibilities

• Design, develop, and maintain backend services and APIs using Rust.
• Build scalable, reliable, and secure systems that support business growth.
• Contribute to architecture decisions and technical direction across the platform.
• Improve system performance, reliability, observability, and maintainability.

Skills

Backend software development

Production systems with Rust

Distributed systems

APIs

Backend architecture

Relational databases

CI/CD pipelines

Problem-solving

Communication skills

Job description

About the role

We are looking for a Senior Backend Engineer to help build and evolve the services that power the Xensam platform.

In this role, you will design, develop, and maintain scalable backend systems in Rust and across a diverse technology landscape. You should enjoy understanding complex systems and contributing across multiple parts of the tech stack where needed. Working closely with Product, Engineering, Infrastructure, and Security teams, you will deliver reliable, secure, and high‑performing solutions that support our continued growth.

Beyond development, you will contribute to architectural decisions, improve engineering practices, and help shape the technical direction of the platform. The role offers the opportunity to mentor other engineers, drive technical initiatives, and influence how we build software at scale.

Responsibilities

• Design, develop, and maintain backend services and APIs using Rust
• Build scalable, reliable, and secure systems that support business growth
• Contribute to architecture decisions and technical direction across the platform
• Improve system performance, reliability, observability, and maintainability
• Identify and resolve complex technical challenges across services and integrations
• Refactor and modernize existing solutions in line with engineering best practices
• Write robust unit, integration, and end‑to‑end tests
• Participate in code reviews and help maintain high engineering standards
• Collaborate closely with Product, Infrastructure, and Security teams
• Support and mentor other engineers through knowledge sharing and technical guidance

Qualifications

• Extensive experience in backend software development
• Strong experience building production systems with Rust
• Strong understanding of distributed systems, APIs, and backend architecture
• Experience building scalable, reliable, and secure services
• Strong foundation in software engineering principles, testing, and version control
• Experience working with relational databases and SQL
• Comfortable working with CI/CD pipelines and modern development practices
• Strong problem‑solving and debugging skills
• Excellent communication skills and a collaborative mindset
• Strong verbal and written communication skills in fluent English (Swedish is a plus)

Bonus points if you have

• Experience with PostgreSQL at scale
• Experience with cloud platforms and containerized environments
• Experience working in high‑growth SaaS environments
• Understanding of modern frontend development and frameworks (e.g. React, Vue, Angular)
• Experience collaborating across the full stack to design and deliver user‑facing features

What you get

• A generous work culture with free drinks and snacks, office massages, and more
• Three days in‑office (with remote work on Mondays and Fridays)
• An opportunity to shape your career growth while contributing to the company's success
• A dynamic position embracing freedom under responsibility
• If sales targets are met, all employees enjoy an annual destination trip