Senior Engineer (MarTech) - Leaply

About the Position

Senior Engineer (MarTech) - Leaply

Location

Warsaw, Poland; Kyiv, Ukraine; Lviv, Ukraine

Employment Type

Full time

Location Type

Remote

About Leaply

Leaply builds an ecosystem of digital products to make a healthy lifestyle possible "on autopilot." Our mission is to make Healthy Living the new gold standard.

Unlike other wellness apps, we are practice-driven: we don't just provide another library of theory, but ensure that the user performs at least one simple practice (breathing, massage, exercise) daily that genuinely improves their condition. Essentially, we are building the most exciting health game in the world: a small action today-visible results over time.

Traction:

• Launched in June 2024, found unit economics in less than 2 weeks
• 200K+ users worldwide
• 4.7 in the App Store · 4.4 on Trustpilot (20,000+ reviews)

Team: 60+ specialists in 2 years, remote-friendly, English communication. The 3-year ambition is for millions of people to do at least one practice daily with Leaply.

Leaply is currently seeking a Senior Engineer in the MarTech direction (previous experience with marketing development is not critical).

Responsibilities

• Take one of the service areas entirely and manage it independently-architecture, pipeline quality, development.
• Standardize integrations with advertising networks (Meta, Google, TikTok, etc.): limits, retries, error handling, monitoring.
• Develop LLM pipelines in production-Vertex / Gemini for analyzing creatives, generating images and videos.
• Transfer marketing logic from Airtable to where data control is.
• Raise the engineering bar in the team: reviews, integration standards, zone monitoring.

NestJS (Node.js / TypeScript), PostgreSQL, GCP (GKE, Cloud Run, Cloud Functions), BigQuery, React / Next.js for internal interfaces.

Knowledge of NestJS is not mandatory.

Requirements

• Backend on Node.js / TypeScript production-level, 5+ years of commercial experience.
• Experience designing a service or module from scratch under live traffic: data models, idempotency, queues, webhooks, external API limits, and retries.
• Experience integrating with external APIs as a system-limits, error handling, retries, monitoring.
• Legacy tolerance: able to understand and refactor foreign code of varying maturity.
• Ownership: you find risks and bring solutions, form the backlog of your zone together with the business part of the squad.
• Speak business language.
• Use AI in daily work-in code, reviews, data analysis.

Nice to Have

• Experience with React/Next.js.
• Experience with advertising APIs (Meta Marketing API, Google Ads, TikTok) and tracking-pixels, CAPI, attribution.
• LLM pipelines in production (Vertex / Gemini), image and video generation.
• BigQuery and data pipelines, experience working with Airtable from within.
• GCP, Kubernetes, Terraform, Argo CD.

Why This Role is Exciting

• Full ownership of your zone: engineers at Leaply don't just close tickets from the backlog, but at the product, design, and marketing levels, make decisions and drive initiatives from idea to result.
• You design the architecture and technical stack of your module: the engineer chooses the technologies for the task.
• AI is the standard of work, not a trend.
• A role without being tied to a single service; you can choose the next project independently based on your interests within MarTech.
• Growth along the IC track with the prospect of becoming a Tech Lead in the future. You will have the opportunity to develop cross-team initiatives (infrastructure, code quality, culture).

What We Offer

• SKELAR Platform. This is the operational core of the venture builder, helping founders quickly go from zero to one. Teams focus on the product, while 10+ teams in the Platform handle functions such as Legal, Finance, HR, Admin, Talent Acquisition, Employer Branding, IT, and more.
• Network and experience sharing as part of the culture. Among our colleagues are co-founders who have launched more than one business, as well as the strongest specialists in the market. Thus, we have access to the necessary expertise at our fingertips.
• Exclusive domain education. We have created our own training programs for teammates to choose from-from a 2-month school for novice managers to intensives on AI and professional clubs for development, product management, etc.
• Impact on systemic support for Ukraine. We have the SKELAR foundation charity fund, created by SKELARians themselves, which implements important social projects thanks to every employee. For example, we founded the first accelerator for veterans in Europe and are forming a platform for supporting veterans at the state level.
• Ecosystem for productive work. Spaces have been created for SKELARians that inspire results-with their own gym, climbing wall, green zones Bali, and libraries. In spaces where service, safety, and comfort are synchronized with the pace of team growth, we get a wow experience and work more efficiently.
• Care for daily comfort. Breakfasts, lunches, access to sports training in Kyiv or partial compensation for classes in Warsaw, health insurance, paid business trips if the role requires such travel, corporate discounts from partners.

We will tell you more at our introductory meeting.

We invite you to build the next big everything with SKELAR!