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Senior Backend Engineer at Welltech. Location Information: . Who Are We?. Welltech is a global wellness technology company with Ukrainian roots. Our mission is . to build and scale wellness apps globally through state-of-the-art, tech-driven performance marketing.. We are one of the most established players in the wellness app space, and we are accelerating. Over . 25.5 million. people across the world use our apps — . Muscle Booster, Yoga-Go, and WalkFit. — to build healthier habits, move more, and feel better every day. Every subscription represents a real person making a real change in their life, and we take that seriously.. With . 500+ people. across hubs in . Cyprus, Ukraine, Poland, Spain, and the UK. , we combine the scale of a market leader and the drive of a team that's just getting started.. What We’re Looking For. We are seeking a . product-minded, impact-driven Senior Backend Engineer . with strong experience in . Domain Driven Design, cross-functional product development and Developer Productivity.. In this role, you’ll collaborate with product, engineering, and data teams to spearhead the development of a greenfield product, evolve existing content management systems, and ensure our platforms remain robust, scalable, and efficient. You’ll be an advocate for highly iterative development approaches, data-driven decision-making in your team, fueling our mission to bring health and wellness to millions.. Key Responsibilities:. Spearhead development of a greenfield product: Collaborate with product, engineering, and data teams to spearhead development of a greenfield, data and multimedia powered product in the wellness & fitness space. Cross-functional collaboration: Work closely with product managers, designers, software engineers, content producers, data experts, and infrastructure teams . Mentor & lead by example: Provide guidance to team members, lead team level product and engineering initiatives, influence coding standards, support your team in making critical decisions. Set us up to maximize the pace of experimentation: Advocate for and drive implementation of highly iterative development practices and technical solutions that can allow us to maximize the pace of experimentation while maintaining quality. Be a champion of Engineering Excellence: Advocate for and implement best engineering practices, foster a learning culture, and influence strategic technical decisions in your team. Ensure scalability, performance, and reliability of systems owned by your team. Required Skills:. Strong product & business mindset. : Proven ability to drive the building of successful products and/or platforms used by product teams, working closely with Product Managers, Designers, Domain experts to create value for customers. Domain Driven Design. : comprehensive system design skills with proven impact building new and refactoring existing large-scale systems powering customer-facing products. Proven technical foundation. : Strong hands-on engineering background on the backend, strong experience with . relational and non-relational databases and AWS infrastructure . (e.g. Lambda/API Gateway/SQS/SES/CloudFormation/CloudWatch). Language and tool agnostic approach. : Ready to pick the right tool for each challenge Experience with building efficient, scalable, reliable backend systems in . Python. or Kotlin is a plus. Our main language of programming is Python. System-level impact. : Track record of influencing technical direction of your team and of effective collaboration with adjacent teams, with the ability to highlight risks, trade-offs and propose efficient solutions. Engineering culture & excellence. : Demonstrated ability to shape and elevate engineering culture, methodologies, and best practices in your team. Developer productivity. : Experienced in maximising developer productivity through the right technical choices, highly iterative development practices to achieve high pace of data-driven experimentation. End-to-end ownership and dealing with ambiguity. : You thrive in ambiguous environments and get excited about figuring out solutions to complex problems, and taking a leading role in executing on them. Ready to make a transformative impact on global wellness? Join us at Welltech and help millions of users lead healthier, happier lives!. Candidate journey. ⭕️ Recruiter call --> ⭕️ Live code review --> ⭕️ System Design Interview --> ⭕️ Meet the Hiring Manager. Check out some of our products. Muscle Booster — . https://musclebooster.fitness/.  . Yoga-Go — . https://yoga-go.io/.  . WalkFit - . http://walkfit.pro.