We're looking for a Senior Backend Engineer to join our client team and help us build an internal communications platform. We are looking for empathetic and motivated team players who are motivated by growth and ownership. As part of our tech stack, we are using: React.js, Javascript, Typescript, Kotlin, Go, Java, MongoDB, Terraform, Docker and Playwright, to name a few.Our environment brings together skilled, like-minded professionals in a team that truly values diversity and inclusivity. We foster a flexible and agile workplace designed to support both well-being and a healthy work-life balance. Team events during working hours are an important part of our culture, helping us build strong, effective teams, and we actively encourage them. Driven by a passion for technology, we are committed to using it to make a meaningful impact on the world. At the same time, we take pride in our “You build it, you run it” approach, taking full responsibility for what we create. ResponsibilitiesDesign, develop, and maintain scalable backend services that power our AI applicationsLead development of low latency voice enabled AI applications Apply advanced prompt engineering techniques to optimize model performance, manage context windows, and ensure reliable, high-quality responsesImplement model integration patterns to connect and orchestrate various external and internal services Participate in code reviews, architectural discussions, and technical strategy planningDefine and implement observability standards for AI applications, including metrics for latency, cost, token usageCollaborate with ML Scientists and Data Scientists to transition prototypes and models into production-ready, high-availability servicesQualifications6+ years of professional experience in backend software development engineerAt least 3+ years of experience in GoLangTeam player and close collaboration with PM, Frontend and other Backend engineersExperience with cloud platforms (AWS, GCP, or Azure) and containerization technologies (Docker, Kubernetes)Previous experience in building MVPs, gathering user feedback, and iterating quickly to identify and achieve product-market fit.You are a self-starter who can work independently and as part of a teamBeneficialPractical experience integrating with AI/ML models into production systems.Experience building backend systems designed for complex agentic workflows Familiarity with foundational LLM concepts such as retrieval-augmented generation (RAG)More about Pwrteams Pwrteams is a pioneering force in connecting individuals across tech projects, harnessing their combined strengths to drive innovation. Since 2007, we have been in the vanguard of assembling cross-border IT and engineering teams strategically positioned within Eastern Europe’s dynamic tech ecosystems to cater to the global business landscape.  We're at the forefront of travel, media and fintech innovation, healthcare efficiency enhancements, and others. Our goal? To make a meaningful difference worldwide. Become a part of our distinguished team and discover your potential to pioneer transformative solutions for tomorrow!  #pwrteamscareer*Following the applicable legal regulations, particularly Directive (EU) 2019/1937 of the European Parliament and of the Council on the protection of persons reporting breaches of Union law and its implementation into Polish law under the Act of December 4, 2021, on the Protection of Persons Reporting Breaches of Law (Journal of Laws 2021, item 2105), including Articles 4-6 governing whistleblower protection and reporting procedures, the company has implemented a Whistleblower Support Policy, ensuring anonymity, protection, and support for individuals reporting irregularities.