Senior Security Engineer

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