ZigZag Global
Bulgaria
Senior Full Stack Engineer (Ruby on Rails) - Remote (Bulgaria)
- AWS
- Cloud
- Continuous Integration
- Datadog
S
AI Summary
We're looking for a Senior Web SDK Engineer to join our team. You'll be responsible for building and shipping features, improving performance and reliability of the Web SDK, and solving real customer problems. You'll work with AI tools to explore, scaffold, and refactor code, and think in terms of problems, constraints, and outcomes.
Key Highlights
Building and shipping features
Improving performance and reliability of the Web SDK
Solving real customer problems
Working with AI tools to explore, scaffold, and refactor code
Key Responsibilities
Build and ship features
Own features end-to-end: understand the problem, design a simple solution, build it (often with AI assistance), test it, and refine based on feedback
Improve performance, reliability and developer ergonomics of the Web SDK and supporting services
Debug tricky issues across the SDK, backend and browser – using logs, metrics and good hypotheses rather than guesswork
Solve real customer problems
Work with Product and Delivery to understand real customer use-cases and constraints
Propose simple, pragmatic solutions instead of over-engineering
Help streamline the integration experience so partners can get to “first story live” quickly and safely
Improve developer experience
Enhance documentation, code examples, and integration guides, often using AI to draft and then editing for clarity
Identify friction points for integrators and proactively champion improvements
Make small, continuous DX improvements (tooling, scripts, templates) rather than waiting for a big “clean-up project”
Engineering excellence
Use AI tools by default for exploration, scaffolding and refactors – and then verify outputs with tests, types, and your own judgement
Participate in thoughtful code reviews: give clear, kind, direct feedback and be open to having your own ideas challenged
Help improve CI pipelines, test suites and dev scripts so the whole team moves faster and more safely over time
Maintain high ownership and follow-through from idea to release: surface blockers early, communicate clearly, and finish what you start
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Technical Skills Required
Benefits & Perks
Up to EUR 34,000 salary
Fully remote working
33 Days Paid Leave and Benefits
Browse our curated collection of remote jobs across all categories and industries, featuring positions from top companies worldwide.
Nice to Have
Experience building SDKs, libraries or developer tools
Experience with performance tuning (bundle sizes, loading strategies, caching) in web apps
Open-source contributions, side projects or technical write-ups that show how you think
Interest in sports, media or content tech
Job Description
🇧🇬 Up to EUR 34,000 salary on a full time, permanent employment contract
🌎 Fully remote working within Bulgaria!
🏖️ 33 Days Paid Leave and Benefits
✨ High-growth SaaS product trusted by major global sports brands
💻 Modern stack, great tooling, AI-first engineering culture
We’re looking for engineers who take initiative, spot opportunities, and move ideas forward proactively. Builders who are excited to use AI as a core part of how they work, think from first principles, and keep things simple – not people who just want to hand-craft every line of code.
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