Senior .NET Core Backend Engineer | Microservices & AWS

StepStone Group; Warszawa; On-site; PLN 10,155,600 - 12,164,400; Full time

Benefits offered by this job

Premium medical and dental care

Life insurance

Employee Referral Program

Hackathons

Knowledge Sharing Hours

In-house projects

Tech communities

Events and integration parties

Game room

Job summary

The Stepstone Group Poland is hiring a Senior Software Engineer II to own complex backend challenges in the Apply domain, primarily on .NET Core. You will be a hands-on technical anchor, shaping architecture and delivering solutions with the team.

You will mentor engineers, tackle ambiguous problems with minimal supervision, and drive architectural initiatives that align with business needs across a global platform.

Qualifications

• Proven experience with .NET Core, SQL, AWS and building scalable microservices.
• Strong understanding of asynchronous communication and message queues.
• Experience with automated testing, CI/CD pipelines and modern delivery practices.
• Ability to mentor engineers and participate in technical interviews.

Responsibilities

• Lead technical initiatives within the team and coordinate cross-team efforts.
• Design and implement architectural solutions while staying hands-on.
• Identify technical risks and optimization opportunities and justify solutions.
• Mentor and coach engineers and contribute to hiring and promotion processes.
• Share knowledge across the org via Communities of Practice and tech talks.

Job description

The Stepstone Group Poland is hiring a Senior Software Engineer II to own complex backend challenges in the Apply domain, primarily on .NET Core. You will be a hands-on technical anchor, shaping architecture and delivering solutions with the team.

You will mentor engineers, tackle ambiguous problems with minimal supervision, and drive architectural initiatives that align with business needs across a global platform.