(Senior) Backend Engineer

Job Description

At WithSecure™, we protect businesses all over the world. Our SaaS solutions safeguard against modern cyber threats, and our innovative Co-security approach reflects our belief that true protection requires collaboration and shared expertise. No one can solve every cyber security problem alone. Our vision is to become Europe’s flagship in cyber security. Every day, our talented teams work to prevent cyber extortion, secure critical infrastructure, and prevent misuse of sensitive data. At WithSecure, it’s our people who make us exceptional – a diverse community that values passion, purpose, and a commitment to workplace well-being. If you’re ready to make an impact with a company that’s transforming cybersecurity, we’d love to hear from you.

Cloud Protection For Salesforce (CPSF) is seeing phenomenal growth, due to highly successful product on Salesforce AppExchange. This application is powered by High Performing Cloud Protection System.

We are looking to hire (Senior) Backend Engineer for Cloud Protection Team to Design, architect, implement, test and maintain high performing Cloud Protection systems. Work closely with other engineers (from juniors to seasoned pro's), to build highly scalable, fault tolerant and well tested systems.

Key Responsibilities

• Work closely with team members to design and implement features end-to-end.
• Implement modern cloud patterns, including microservices, event-driven processing, and horizontal scaling.
• Optimize backend performance, reliability, and security across multi-tenant environments.
• Participate in code reviews, mentor other engineers, and drive technical best practices.
• Contribute to architecture discussions and long-term platform evolution.
• Take ownership of specific new features as feature lead and drive them to shipping.
• Participate in Enterprise Scale Testing and own load testing of Backend Systems

What are we looking for?

• We are looking for Self-Driven individual who is interested to work outside of their comfort zone, has passion to learn new things, always looking to make things better and enjoys working in a team.
• 5+ years of backend engineering experience, with a strong focus on .NET (C#).
• Proven success building and maintaining SaaS or large-scale cloud applications.
• Strong knowledge of microservices, API design, and distributed systems.
• Experience with cloud platforms (AWS preferred), containerization (Docker/Kubernetes), and CI/CD pipelines.
• Experience in building scalable, high-performing & robust applications.
• Deep familiarity with monitoring, logging, and application performance tools.
• Excellent communication skills and the ability to collaborate across teams.

Bonus points

• Experience with building systems using AWS
• AWS certified (AWS Certified Solutions Architect - Associate)
• DevOps mindset & skills
• TypeScript knowledge from previous projects
• Any knowledge of Apex Development
• Exposure to using LLMs.

What will you get from us

• The chance to work with one of the best teams and fastest growing products within WithSecure.
• A team that is technical, ambitious and friendly, that will share their knowledge and expect you to do the same.
• Chance to solve unique problems of cloud to cloud services.• Enrich your knowledge on cloud infrastructure.
• We value curiosity, passion and continually innovating.
• We are rapidly expanding and you will have lot of opportunity for career progression.
• Shiny New Environment Friendly Office next to the sea with
  • Amazing Sea View
  • Fußball, Ping Pong table, Gaming roomo Terrace Sauna
  • Monday Breakfast
  • Amazing Employee Benefits
• How we work --
  • We are a very flat and agile organisation.
  • We want developers to take charge & influence roadmap and not wait for signalling from higher up.
  • We encourage Hybrid working to keep balance between focussed work and having fun at work with team members.