(Senior) Fullstack Engineer (C# and AWS) - Freelance

Netguru; Poznań; Remote; PLN 240,000 - 320,000; Full time

Job summary

A leading tech consultancy based in Poland is looking for a Senior Fullstack Engineer proficient in C# and AWS. The remote role involves defining technical direction, leading microservices design, and ensuring high-quality software delivery. The position offers flexible working hours and competitive compensation, with a contract rate of up to €45/h.

Benefits

100% remote, flexible work

Continuous development of skills

Dev-friendly processes

Qualifications

• Proficient in C# and AWS with experience in microservices design and documentation.
• Knowledge of queuing and messaging patterns for asynchronous communication.
• Experience with high-quality software development practices.

Responsibilities

• Define technical direction and ensure health of core platforms.
• Lead design and documentation for new microservices applying best practices.
• Delivering critical functionality focused on high-value business logic.

Skills

C# proficiency

AWS (Event-driven systems, SQS, EventBridge)

Kubernetes

Terraform

Distributed/event-based architecture experience

High quality/testing mindset

Job description

Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting‑edge technology, AI‑powered personalization, and world‑class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted.

How freelancing works at Netguru?

As a Netguru freelancer, you can choose what works well for you. You decide when, where, and how you work on projects and tasks.

We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills.

But there's more. Netguru freelancers can benefit from full‑time collaboration and really be a part of the team.

So, are you ready to make an impact? Join Netguru, and let's build beautiful software together.

As a Senior Fullstack Engineer (C# and AWS) you will:

• Be responsible for defining the technical direction and ensuring the health of the core platforms.
• Lead the design and documentation (TDRs) for new microservices using C#/.NET and AWS best practices. This includes defining service contracts, data models, and resilience strategies.
• Design and implement robust queuing and messaging patterns (e.g., using SQS/SNS) to handle high‑throughput, asynchronous communication and guarantee data integrity across distributed systems.
• Deliver critical functionality within your assigned stream, focusing on high‑value business logic.

Salary range: up to €45/h (on a B2B contract)

Engagement: fulltime

Working Hours: UK time

Start date: January 2026

Project duration: 6 months (extension possible)

• C# (strong proficiency).
• AWS: Event‑driven systems, SQS, EventBridge.
• Kubernetes.
• Terraform.
• Distributed/event‑based architecture experience.
• High quality/testing mindset.

Nice to have:

• React and TypeScript.
• Ruby (understanding legacy system).
• GraphQL.
• Experience with payment flows, refunds, installments.

In return, we offer:

• 100% remote, flexible work.
• Work with an experienced team of developers and continuous development of your hard and soft skills.
• Dev‑friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes.
• Long‑term collaboration on challenging products (FinTech, B2B software, E‑commerce and more).

Here’s what you can expect from the recruitment process:

• First, you'll meet with one of our recruiters to get to know each other better.
• If everything goes well, you'll have the opportunity to meet with the client during an online interview.

Curious to learn more about working as a Netguru freelancer? All the information you need is here: Netguru Talent Marketplace.

Looking for a full‑time job? Check out our Career Page and find out more about our open recruitment processes.

If you need any disability‑related adaptation at any step of the recruitment process – simply let the recruiter know! We'd be happy to help.

Don't hesitate and apply right away.