Golang Developer (f/m/x)

We are looking for a Golang Developer to join the development of MailOS, a cloud-native email platform for a major player in the Polish market. You will be part of a dynamic team focused on modernizing one of the largest email services in Poland, serving millions of users. This role involves designing, developing, and maintaining scalable backend applications, utilizing AWS and microservices architecture. If you are passionate about leveraging AI-assisted development tools and modern software engineering practices, this opportunity may be the right fit for you.

Your tasks

• Designing, developing, and maintaining scalable backend applications using Golang
• Building and implementing cloud-native solutions based on AWS and microservices architecture
• Participating in end-to-end software delivery, from requirements analysis and solution design to deployment and maintenance
• Using AI coding agents throughout the software development lifecycle to enhance productivity and code quality
• Ensuring code quality, security, scalability, and reliability in all deliverables
• Collaborating with development, DevOps, and business teams to align technical solutions with business needs

Requirements

• Minimum 2 years of hands-on experience in Golang development
• Practical experience with AWS and microservices architecture
• Experience in end-to-end software delivery, including design, implementation, testing, deployment, and maintenance
• Hands-on experience with AI-assisted software development, including agentic coding tools such as Claude Code, Codex, or similar
• Ability to document technical solutions and collaborate effectively with development, DevOps, and business teams
• Fluent Polish
• Residency in Poland

Nice to have

• Experience with Kubernetes, Terraform, and CI/CD pipelines
• Knowledge of additional programming languages, such as Python or Java
• Experience in building AI-powered development workflows and automating engineering tasks
• Advanced level of English

Job no. JOB-3WB9Q

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care