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 talented and motivated Senior Security Engineer (x/f/m) to join our small but dedicated Security Team. In this role, you will play a crucial part in strengthening our overall security posture, collaborate across teams and domains, and own security initiatives company-wide. Responsibilities: * Own and drive execution of multiple key security initiatives, ensuring they are well-integrated, documented, and effectively support Welltech’s security goals. * Collaborate with leadership to shape the team’s roadmap, providing your expertise. * Mentor junior team members in the Security team to help them grow in their role. * Collaborate with engineering, IT, and product teams to embed security best practices throughout the development lifecycle and operational processes. * Champion continuous improvement in Security Engineering by regularly reviewing processes, implementing automation, and driving standardization to enhance team efficiency and organizational impact * Lead PCI-DSS Compliance initiative with relevant stakeholders * Design, implement, and maintain security controls and measures across Welltech’s systems, networks, and cloud environments. * Contribute to threat modeling, risk assessments, and incident response, supporting a proactive and resilient security posture. * Develop and refine internal security policies, standards, and tools to support company-wide security goals. * Support and lead security awareness efforts, helping to foster a strong security culture throughout the organization. Continuously evaluate emerging threats, technologies, and practices, driving improvements to Welltech’s overall security maturity. Requirements: * 5+ years of hands-on security engineering experience with proven expertise in implementing and managing security solutions * Solid understanding of security principles, vulnerabilities, and common attack techniques. * Proficiency with Python (especially writing Lambda functions). * Experience with Kubernetes in production environments. * Familiarity with CI/CD tooling and secure deployment practices. * Very good knowledge of cloud platforms - AWS or Google Cloud. * Big plus: Solid Experience with PCI. * Nice to have: Experience with application security, DLP platforms, and observability. Soft Skills: * Excellent written and verbal communication skills. * A collaborative, proactive mindset and passion for continuous improvement. * Ability to clearly communicate complex security concepts to technical and non-technical stakeholders. * Strong organizational skills to effectively prioritize and manage multiple concurrent tasks and meet deadlines. Candidate journey: ⭕️ Recruiter call ----> ⭕️ Skills assessment-----> ⭕️ 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