Senior.NET Engineer

About the Position

Senior.NET Engineer

It’s your career – make it matter

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and UI design, managed services, product development, and software development.

This is the job

We are looking for a Senior.NET Engineer to join a US-based client building a large-scale food ordering platform used by major restaurant chains and millions of users across the country. You will contribute to implementing large, strategic, and complex components and services, including solution design and reliability concerns.

The team collaborates closely with US-based stakeholders, so some overlap with US working hours is expected (typically until around 18:00–19:00 CET).

Responsibilities

• Design, develop, and maintain scalable backend services and platform components;
• Contribute to architecture, reliability, scalability, and technical design decisions;
• Collaborate closely with product managers, designers, and other engineers to deliver balanced technical solutions;
• Improve system performance, observability, and operational stability;
• Participate in code reviews, technical discussions, and continuous improvement initiatives;
• Own delivery quality across the full SDLC, including testing, deployments, and production support;
• Participate in on-call rotation and help troubleshoot production issues when needed.

Requirements

• 5+ years of commercial experience in backend software engineering with strong expertise in modern C#,.NET, ASP.NET Core, Dapper, SQL Server, and PostgreSQL;
• Strong experience building distributed systems and microservices-based applications;
• Experience designing scalable APIs and services with reliability, maintainability, and versioning in mind;
• Solid hands-on experience with cloud platforms (AWS preferred);
• Experience with containerized environments using Docker, Kubernetes, and Helm;
• Strong understanding of messaging and asynchronous communication patterns (Kafka, AWS SQS, or similar);
• Experience with CI/CD pipelines and modern engineering workflows (GitHub Actions, TeamCity, Octopus, etc.);
• Experience with monitoring and observability tooling such as Datadog, Grafana, Sumo Logic, or similar;
• Familiarity with Infrastructure as Code tools such as Terraform;
• Strong troubleshooting and production support skills;
• Comfortable participating in technical discussions, architecture decisions, and cross-team collaboration;
• Good communication skills and ownership mindset.

We Offer

At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.

About the Company

Location: Poland

Remote status: Fully Remote

Technology: .NET

Seniority: Senior-level

Application Process

APPLICATION

Send us your application, we are ready to hear your story and explore how we can grow together.

REVIEW

Our team carefully reviews every application with curiosity and care. If your profile isn’t the right fit today, we will keep it in mind for future opportunities that match your skills and ambitions.

TALENT ACQUISITION INTERVIEW

You will meet our Talent team to talk about your goals and learn more about who we are, what we offer, and how we support our people.

TECHNICAL INTERVIEW

Our tech interview is all about diving deeper into your expertise and understanding your strengths, how you solve problems, and how you think – no trick questions, just a meaningful conversation.

CUSTOMER INTERVIEW

For some roles, especially when our clients are closely involved, you might also have a conversation with them – it’s a chance for everyone to align and get to know each other better.

JOB OFFER

If we both feel it’s the right match, we will send you an offer to join us. And even if it’s not the time just yet, you’ll always hear back from us.

WELCOME!

Your new team is excited to meet you, support you, and build something great together. Let’s make your first day the start of a journey that shapes a career that matters.

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