(Senior) Fullstack Engineer with Go - Freelance

Netguru is a consultancy, product design, and software development company founded in 2008. It helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Netguru has completed more than 1400 projects and has nearly 600 employees worldwide. The company works with clients including IKEA, Volkswagen, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. Netguru offers application development services across industries such as fintech, healthcare, commerce, tourism, and robotics.

Must-have:

• Fluent English (at least B2).
• Experience with React.js.
• Experience with Golang (Go).
• Experience with PHP (modern and legacy versions).
• Experience working with legacy monolith architectures combined in production environments.
• Identity experience with CIAM solutions.
• Proven experience with Auth0 and AWS Cognito (at least one, familiarity with the other is a significant plus).
• Architectural focus with experience migrating services/functionality between legacy monoliths (PHP) and modern microservices (Golang).

Nice to have:

• Ability to navigate complex, multi-stakeholder discussions and present technical findings clearly to both engineering peers and non-technical partners.
• Strong analytical capabilities to quickly understand complex system dependencies, legacy code, and integration requirements.
• Awareness of project impact on internal and external stakeholders.
• Understanding of user experience (UX) implications related to identity changes (e.g., login flows, password resets, registration).
• Proven ability to deliver high-quality work under tight deadlines and in a high-pressure environment.

• Support technical execution, planning, and legacy stack migration in a CIAM (Customer Identity and Access Management) migration project.
• Migrate the core identity solution from AWS Cognito to Auth0.