Principal DevEx Engineer

flohealth· Engineering
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📍 Vilnius💰 EUR 10K–12K

About this role

500M+ downloads. 80M+ monthly users. A decade of building – and we’re still accelerating.

Flo is the world’s #1 health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 – and we’re not slowing down.

With 7M paid subscribers and the highest-rated experience in the App Store’s health category, we’ve spent 10 years earning trust at scale. Now, we’re building the next generation of digital health – AI-powered, privacy-first, clinically backed – to help our users know their body better.

The job

The Velocity team exists to eliminate friction. We treat our internal developers as our customers. You will:

  • Abstract Complexity: Build intuitive tooling that enables self-service allowing devs to focus on product logic.
  • Standardize Excellence: Bake best-practices, security, observability, and scalability into the core stack so they aren't afterthoughts.

What You Will Do

  • Developer Experience: Build self-service tools that give product teams autonomy without sacrificing system stability.
  • Platform Engineering: Architect and evolve our core stack (AWS, EKS, Terraform).
  • Systems Resilience: Lead reliability initiatives, including business continuity planning and a sustainable on-call rotation.
  • High-Scale Privacy: Support the infrastructure for industry-leading privacy features, such as our TIME-recognized "Anonymous Mode."
  • Observability: Implement best-in-class monitoring (metrics, logs, tracing) to ensure issues are identified and mitigated before they impact the user.

What You Bring

  • Experience: 15+ years in AWS Infrastructure, DevEx, SRE, or DevOps roles supporting high-traffic, distributed environments.
  • Cloud Native Mastery: Deep expertise in AWS and Kubernetes (K8s) is essential.
  • Automation Mindset: Proficient in Infrastructure as Code (Terraform), a coding background with experience with Python, Scala or Go would be beneficial.
  • Technical Breadth: You will feel comfortable at all levels of the stack, from developing front ends using React through to engineering Terraform modules to deliver infrastructure abstractions.
  • Communication: A "doc-first" mentality and the ability to collaborate across distributed product teams.

AI First: You will have experience of the impact which AI automation is having on development teams and the software delivery lifecycle and have strong ideas on how to support them through it

Bonus Points

  • Background in hardening infrastructure for high-compliance or security-sensitive environments.
  • Experience scaling consumer tech platforms with millions of concurrent users.
  • Professional Accreditation such as AWS Professional Architect, CKAD or KCSA.

Why Join Flo?

  • High Impact: Flo is re-writing women’s health. 
  • Autonomy: We hire experts and empower you to deliver.
  • Cutting-Edge Stack: Work with modern tools like Sentry, EKS, and Terraform in a fast-paced, "fail-forward" environment at a huge scale.
Salary Range - gross per month (ranges may vary based on skills and experience)
€10.000—€12.000 EUR

How we work

We’re a mission-led, product-driven team. We move fast, stay focused and take ownership – from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar.

You’ll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. 

What you'll get

We support impact with meaningful reward. Here’s what that looks like:

  • Competitive salary and annual reviews
  • Opportunity to participate in Flo’s performance incentive scheme
  • Paid holiday, sick leave, and female health leave
  • Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents
  • Accelerated professional growth through world-changing work and learning support
  • In-person collaboration and work in a hybrid model, with 3 days per week spent in the office
  • 5-week fully paid sabbatical at 5-year Floversary
  • Flo Premium for friends & family, plus more health, pension and wellbeing perks

Diversity, equity and inclusion

Our strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role – nothing else. We’re proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.

Frequently Asked Questions

What is the salary for the Principal DevEx Engineer role at flohealth?
The listed salary for this Principal DevEx Engineer position at flohealth is EUR 10K–12K. This is an full-time role.
Where is the Principal DevEx Engineer position at flohealth located?
This Principal DevEx Engineer role at flohealth is based in Vilnius. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Principal DevEx Engineer at flohealth belong to?
This Principal DevEx Engineer position is part of the Engineering department at flohealth. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Principal DevEx Engineer position at flohealth?
Click the "Apply Now" button on this page. You will be redirected to flohealth's official application portal hosted on greenhouse where you can submit your application directly.
When was the Principal DevEx Engineer job at flohealth posted?
This Principal DevEx Engineer position at flohealth was posted on Aug 10, 2026. Apply as soon as possible — early applications are often reviewed first.
Principal DevEx Engineer
flohealth · 💰 EUR 10K–12K
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You'll be redirected to flohealth's official application page on Greenhouse.