Welcome toWelltech—where health meets innovation! 🌍 As a global leader inHealth & Fitness industry, we’ve crossed over220 million installswith life-changing apps, all designed to boost well-being for millions. Our mission? To improve the health of millions of people through intuitive nutrition trackers, powerful fitness solutions, and personalized wellness journeys—all powered by a diverse team of over700+ passionate professionals with a presence across 5 hubs.Why Welltech?Imagine joining a team where your impact on global health and wellness is felt daily. At Welltech, we strive to be proactive wellness partners for our users, while continually evolving ourselves.

Welltech

Senior Backend Engineer (Java)

Junior IT Support Specialist (Hybrid)

Marketing and Reputation Manager

Brand Reputation Specialist

User Acquisition Manager

Organic Video Growth Specialist (1 year FTC)

Senior Affiliate Manager

Experimentation Manager

Marketing Motion Designer

Welltech, a global leader in the Health & Fitness industry with over 200 million app installs, is seeking a Senior Back-end Developer (Java) for its Payments team. This role involves building a modern, internal payments platform, streamlining operations, and working on technically rich projects with measurable business impact. The ideal candidate will collaborate across disciplines, design robust systems, build microservices, and champion engineering best practices in a cloud-native environment.

CRO Manager

<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Who Are We?</h2>Welcome to Welltech—where health meets innovation! 🌍 As a global leader in Health & Fitness industry, we’ve crossed over 200 million installs with five life-changing apps, all designed to boost well-being for millions. Our mission? To transform lives through intuitive nutrition trackers, powerful fitness solutions, and personalized wellness journeys—all powered by a diverse team of over 700 passionate professionals with presence across 5 hubs.Why Welltech? Imagine joining a team where your impact on global health and wellness is felt daily. At Welltech, we strive to be proactive wellness partners for our users, while continually evolving ourselves.<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">What We're Looking For</h2>We are looking for a Senior Back-end Developer (Java) who is dreaming of developing ambitious tech products. You’ll join our Payments team, a core part of our tech organization that’s building a modern, internal payments platform from the ground up. Our mission is to streamline and future-proof payment operations across the entire business. We're not just maintaining systems—we’re rethinking how payments should work in fast-scaling products.The team is a highly collaborative, cross-functional group with deep expertise in infrastructure, databases, distributed systems, and back-end engineering. We value autonomy, ownership, and knowledge-sharing, and we’re always looking for new ideas to make our systems smarter, faster, and more secure. You’ll have the opportunity to work on technically rich projects that have real, measurable business impact—and have a lot of fun along the way.Key responsibilities:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Collaborate across disciplines: Work closely with cross-functional teams including Frontend/Backend Engineers, Infrastructure, QA (SDET), and Product Managers to design, develop, and deliver innovative solutions that drive real impact.</li><li class="leading-relaxed">Design and implement robust systems: Translate both functional and non-functional requirements into scalable, reliable, and maintainable software. Your code will directly shape user experiences and system integrity.</li><li class="leading-relaxed">Build and operate microservices: Develop, deploy, and maintain high-performance microservices using Spring Boot. Own your services end-to-end—from design and implementation to deployment and ongoing support.</li><li class="leading-relaxed">Operate in cloud-native environments: Manage deployments and configurations across various Kubernetes clusters, ensuring smooth rollouts and minimal downtime in production and staging environments.</li><li class="leading-relaxed">Champion system excellence: Take responsibility for the performance, scalability, security, and data consistency of the systems your team owns. Proactively identify bottlenecks and propose architectural improvements.</li><li class="leading-relaxed">Drive engineering best practices: Promote clean code, test automation, continuous integration, and DevOps principles. Help elevate the engineering culture through thoughtful code reviews, tech talks, and collaboration.</li><li class="leading-relaxed">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</li></ul>Required skills:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Proven Java expertise: At least 5 years of hands-on experience building robust, high-performance applications using Java in production environments.</li><li class="leading-relaxed">Microservices architecture knowledge: A strong grasp of microservices principles, with a track record of designing and scaling distributed systems effectively.</li><li class="leading-relaxed">Spring Boot mastery: Deep, practical experience with the Spring Boot ecosystem—particularly with Spring MVC, RESTful services, Spring Data, Security, and messaging integrations.</li><li class="leading-relaxed">Database skills: Solid experience working with relational databases like PostgreSQL, including an understanding of relational database design, query optimization, and overall data architecture.</li><li class="leading-relaxed">Cloud infrastructure and Cloud-native deployment experience: Previous experience with AWS or another major cloud provider; practical experience deploying and managing services in Kubernetes across multiple environments (e.g., dev, staging, production).</li><li class="leading-relaxed">API and communication protocol fluency: Comfort working with REST, gRPC, messaging systems, and asynchronous communication patterns.</li><li class="leading-relaxed">CI/CD and DevOps mindset: A solid understanding of modern CI/CD pipelines, quality gates, and automation practices that support fast, safe releases.</li><li class="leading-relaxed">Quality-first approach: Demonstrated experience writing comprehensive unit, integration, and API tests for microservices-based systems.</li><li class="leading-relaxed">High proficiency in both written and spoken English, enabling seamless collaboration in an international team.</li></ul>Nice to have:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Fintech domain experience: Previous experience working on fintech products or platforms, with an understanding of industry-specific challenges such as security, compliance, payment processing, and subscription billing.</li><li class="leading-relaxed">Stream processing knowledge: Proficiency with Kafka and Kafka Streams for real-time data processing and event-driven architecture.</li><li class="leading-relaxed">Modern app design principles: Familiarity with The Twelve-Factor App methodology and its application in cloud-native service design.</li></ul>Candidate journey: ⭕️ Recruiter call --> ⭕️ Live Code Review --> ⭕️ System Design interview---> ⭕️ Meet the hiring manager✨ Why You’ll Love Being Part of Welltech:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Grow Together: Join a culture that champions both personal and professional growth. Here, you’ll thrive as we learn, evolve, and succeed together.</li><li class="leading-relaxed">Lead by Example: No matter your role, your leadership matters. Every team member is empowered to inspire and make an impact.</li><li class="leading-relaxed">Results-Driven: We’re all about achieving meaningful outcomes. It’s not just about the effort, but the difference we make every day.</li><li class="leading-relaxed">We Are Well-Makers: Be part of a movement that’s creating a healthier, happier world. Together, we make well-being a reality!</li></ul>Check out some of our productsMuscle Booster — https://musclebooster.fitness/Yoga-Go — https://yoga-go.io/WalkFit - http://walkfit.pro

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SoftSwiss

Business Analyst - Middle

Accountant (Cash & Reconciliation) – Middle

Support Manager - Junior

Middle+/Senior DevOps/System Engineer (SE Platform Ops Sun)

Ruby on Rails Developer - Senior

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Compositor

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VFX Artist - Assets

SOFTSWISS is seeking a Middle Business Analyst to join its growing team, focusing on transforming business needs into clear, structured, and data-driven requirements for product and engineering teams. The role involves eliciting, analyzing, and documenting both business and non-functional requirements, defining backend requirements, and working with data-driven aspects like metrics and KPIs. The analyst will ensure a correct understanding of data organization and flow, collaborating closely with various product and development teams throughout the lifecycle to align solutions with business goals.

Technical Content Operations Specialist - Junior

PSP Analyst - Junior

PSP Support Agent – Junior

Security Analyst – Senior

Golang Team Lead

<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Overview:</h2>SOFTSWISS is hiring a Middle Business Analyst to join our team and help transform business needs into clear, structured, and data-driven requirements for product and engineering teams.<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Key responsibilities:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Elicit, analyze, and document business requirements</li><li class="leading-relaxed">Prepare and maintain non-functional requirements</li><li class="leading-relaxed">Define and document backend requirements, including system behavior and constraints</li><li class="leading-relaxed">Work with data-driven requirements, including data sources, metrics, KPIs, and calculation formulas</li><li class="leading-relaxed">Ensure correct understanding of data organization, data flow, and data lineage</li><li class="leading-relaxed">Collaborate with Product Managers, Developers, QA, Data, and Analytics teams</li><li class="leading-relaxed">Support requirements clarification throughout the development lifecycle</li><li class="leading-relaxed">Participate in solution design discussions and ensure alignment with business goals</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Required Experience:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">2+ years of proven experience as a Business Analyst in IT or product teams</li><li class="leading-relaxed">Strong experience in documenting non-functional requirements</li><li class="leading-relaxed">Experience working with backend-related requirements</li><li class="leading-relaxed">Experience with data-based requirements, including: data sources metrics and KPIs calculation logic and formulas</li><li class="leading-relaxed">Basic SQL skills (ability to write simple queries for data validation and analysis)</li><li class="leading-relaxed">Understanding of data organization principles and data lineage</li><li class="leading-relaxed">English level B2+, both written and spoken</li><li class="leading-relaxed">Strong analytical skills and attention to detail</li><li class="leading-relaxed">Ability to communicate effectively with technical and non-technical stakeholders</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Nice to have:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Understanding of data transfer methods (e.g. REST API, integrations)</li><li class="leading-relaxed">Experience working with BI tools such as Tableau, Apache Superset, or similar platforms</li><li class="leading-relaxed">Experience in Agile/Scrum environments</li><li class="leading-relaxed">Basic understanding of system architecture and data platforms</li></ul>Learn more about our hiring process <a href="https://careers.softswiss.com/blog/hiring-guide-softswiss/" target="blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">here_</a> – what to expect, how to prepare, and what makes SOFTSWISS different.<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">What we offer:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Full-time remote work opportunities and flexible working hours</li><li class="leading-relaxed">Comprehensive Mental Health Programme</li><li class="leading-relaxed">Private insurance</li><li class="leading-relaxed">Sports program compensation</li><li class="leading-relaxed">Free online English lessons</li><li class="leading-relaxed">An additional 1 Day off per calendar year</li><li class="leading-relaxed">Generous referral program</li><li class="leading-relaxed">Training, internal workshops, and participation in international professional conferences and corporate events</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">About Us:</h2>SOFTSWISS is an international company, and an iGaming software expert. We don’t only follow iGaming market trends, we create them! SOFTSWISS is a recognised industry leader in iGaming software solutions development, covering almost all aspects of the iGaming industry. The company has an international team and an official presence in several countries. Projects powered by SOFTSWISS receive numerous awards and accolades from industry media.<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Our Mission:</h2>Changing the iGaming industry through technological innovation.<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Department</h2>Reporting and Analytics<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Role</h2>Business Analyst - Reporting and Analytics<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Locations</h2>Poznan, Poland<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Remote status</h2>Fully Remote<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Employment type</h2>Full-time

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