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 , 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.We are currently seeking a talented Senior Go + PHP Developer with experience in CIAM.Full-time position100% remoteStart date: 26/01/2026End date: 22/09/2026B2B Contract - up to 37 EUR/hProject details:Migration Execution: Perform necessary coding and development to implement the CIAM migration from Cognito to Auth0 across both legacy PHP and Golang microservices.Planning & Design: Actively participate in planning meetings and technical design discussions for the migration strategy.Investigation & Analysis: Conduct necessary technical investigation into existing system behaviors, dependencies, and integration points to identify migration risks and requirements.Task Management: Help design, define, and break down complex migration tasks for the team, ensuring clear scope and dependencies.Technical Support: Provide deep technical expertise in both the legacy PHP stack and the modern Golang microservices environment to ensure a smooth transition.RequirementsMust-have SkillsExpert in Golang (distributed systems and services).PHP (modern and legacy versions)CIAM solutions - Auth0, AWS Cognito (Proven experience with at least one, familiarity with the other is a significant plus.)5+ years combined experience in Golang/PHP is mandatory.Nice to HaveNavigation & Communication 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) is a strong plus.Proven ability to deliver high-quality work under tight deadlines and in a high-pressure environment.BenefitsIn 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).Curious to learn more about working as a Netguru freelancer? All the information you need is here: .Looking for a full-time job? Check out our 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.