Role Description We are looking for a senior Ruby on Rails developer to help us build reliable, scalable products and apply AI/LLM technologies where they create real value. This is a hands-on engineering role for someone who can own complex features end to end, make strong technical decisions, and work across backend architecture, production systems, testing, and AI-assisted product development. You should be excited about AI, but pragmatic enough to know when a simple, deterministic solution is better than an LLM call. - Owning features from technical design to production - Building and maintaining Ruby on Rails systems used at scale - Designing AI/LLM-assisted features and workflows where they improve product quality or user experience - Working with LLM APIs, prompts, retrieval/context strategies, and AI-assisted development tools - Making trade-offs around performance, reliability, cost, latency, security, and maintainability - Writing and maintaining automated tests, including unit, integration, and E2E tests - Debugging production issues and improving system reliability Qualifications - Strong professional experience with Ruby on Rails, ideally at senior level - Experience building and running production systems used by real customers - Strong backend skills, including databases, API design, performance, background jobs, and security - Ability to break down ambiguous problems and propose practical technical solutions - Hands-on interest or experience with AI/LLM technologies - Good judgment about when to use AI and when simpler engineering approaches are better - Strong testing habits and care for long-term code quality - A responsible, curious, flexible mindset: willing to debug, deploy, investigate, learn, and own outcomes Requirements - Nice to have: - Experience with React - CI/CD, background jobs, or AWS experience - Experience building AI-powered product features in production - Familiarity with embeddings, vector search, RAG, evals, or LLM observability - Experience with text-processing, localization, translation, or multilingual products Benefits - Stable & self-funded: Founded in 2007, profitable, and independent. - Industry leaders: Creators of WPML, the #1 multilingual plugin for WordPress, used on 1.5M+ sites - Fully remote, async-friendly: Work from anywhere within EMEA hours - Engineering-driven culture: Ownership, autonomy, testing, and thoughtful problem-solving - Fair compensation and great benefits: Designed to support your well-being both inside and outside of work.

• Design and implement Backend For Frontend (BFF) and API Gateway solutions using Kotlin. • Develop robust integrations with the AWS ecosystem (Lambda, EC2, S3, and DynamoDB). • Ensure the performance, security, and scalability of the developed APIs. • Contribute to architectural decisions, proposing continuous improvements and new technical solutions. • Actively participate in technical refinements and sprint planning with the team. • Collaborate with cross-functional teams to ensure smooth integration and high-quality deliveries.

• Design, develop, and implement robust and scalable web applications using Java, and AngularJs. • Develop and integrate RESTful APIs for seamless communication between front-end and back-end systems. • Manage and optimize MySQL databases, including schema design and query performance. • Collaborate with cross-functional teams, including UX/UI designers, product managers, and other developers, to define, design, and ship new features. • Participate in the entire application lifecycle, focusing on coding, debugging, and testing. • Write clean, maintainable, and well-documented code. • Perform code reviews to ensure code quality and adherence to best practices. • Mentor junior developers and contribute to a culture of continuous learning and improvement. • Troubleshoot and debug production issues, providing timely resolutions. • Stay up-to-date with emerging technologies and industry trends. Implement authentication and authorization mechanisms (e.g., JWT, OAuth). • Experience with Microservices architecture.

• Develop and maintain our code base in relation to proper technologies (.net core, c#) • Develop and maintain core libraries relating to proper technologies (.net core, c#) • Participate in code reviews and contribute to raising the quality of our product • Research new technologies in accordance to the work • Assist in standardization across the whole company • Ensure applications meet quality standards • Documentation of any work • Collaborate with other teams to define, design, and deploy new features • Troubleshoot and liaise with other departments to solve production issues • Other tasks which may be assigned by the management • Participating in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members