Senior Full-Stack Developer

We are looking for a Senior Full-Stack Developer to join our engineering team and drive the development of our next-generation AI voice products.

In this role, you will take end-to-end ownership of features. From front-end interfaces to building robust back-end services. You will work primarily with modern web technologies and frameworks, developing scalable applications and APIs that integrate our state-of-the-art voice synthesis engine.

As a senior engineer, you will have significant influence over architectural decisions and will collaborate closely with the Product Manager, AI/ML researchers, and audio engineers to deliver new capabilities. This is a unique opportunity to shape the future of generative voice tech, integrating large language models (LLMs) and other generative AI components into a platform used by top studios and brands worldwide. If you are excited about building innovative products at the intersection of web and AI, we’d love to hear from you!

Key Responsibilities

• Design, develop, and maintain web application features end-to-end, including responsive user interfaces and server-side logic.

• Make high-level architecture and technology decisions, ensuring the platform is scalable, maintainable, and secure. Evaluate modern frameworks and tools to implement best-in-class solutions.

• Build and consume RESTful (and/or GraphQL) APIs to integrate with Respeecher’s core voice engine and third-party services. Ensure seamless communication between front-end and back-end components.

• Work closely with our AI team to integrate LLMs and generative AI capabilities into the platform (for example, incorporating AI-driven voice generation features or intelligent assistants within the app).

• Write clean, efficient, and well-documented code. Utilize AI-assisted coding tools (such as Cursor or GitHub Copilot) to boost productivity, while maintaining full ownership and accountability for the code quality and correctness. Conduct code reviews and uphold best practices in testing, CI/CD, and documentation.

• Optimize application performance for handling large scale audio and image/video data and real-time processing. Implement monitoring, error handling, and debug complex issues to ensure a reliable user experience.

• Collaborate in an agile environment with cross-functional teams. Work closely with designers, product managers, and AI researchers to translate product requirements into technical solutions. Mentor junior developers and share knowledge within the team.

• Stay up-to-date with emerging technologies (web, cloud, AI) and drive continuous improvements. Prototype and experiment with new features or tools that could enhance the platform or development workflow.

Qualifications & Skills

• 6+ years of software development experience with a focus on full-stack web development. Proven experience taking projects from concept to production.

• Strong proficiency in modern front-end frameworks and SPA development, including state management (Redux or alternatives) and working with component libraries. Experience with TypeScript is a strong plus.

• Ready to work with Python and experience with web frameworks (such as Django, Flask, or FastAPI).

• Solid understanding of building scalable REST APIs, database design (SQL or NoSQL), and server-side application logic.

• Demonstrated ability to design complex systems and make architectural decisions (microservices, modular monolith, cloud architecture, etc.). Experience with designing systems that are scalable, secure, and maintainable.

• Hands-on experience integrating external APIs and services. Familiarity with authentication methods (OAuth, JWT), web sockets, and real-time data processing is beneficial.

• Strong exposure to LLMs and generative AI technologies and their APIs is necessary. Comfort working with data scientists or ML engineers to deploy AI-driven features. Interest or experience in audio/speech processing is a big plus.

• Proficiency with version control (Git) and collaborative development workflows. Experience using containers (Docker) and cloud platforms (AWS, GCP, or Azure) for deployment is a plus. Familiarity with CI/CD pipelines and automated testing.

• Experience using AI-powered coding tools (such as Cursor, GitHub Copilot, Claude, etc.) to enhance productivity. Ability to leverage these tools while ensuring code quality and correctness through thorough review and testing.

• Excellent debugging and problem-solving skills. Ability to take full ownership of tasks and deliver solutions independently. A track record of delivering features end-to-end and an attitude of accountability for results.

• Strong communication skills and the ability to work effectively in a remote and diverse team. Comfortable discussing requirements with non-technical stakeholders and mentoring team members.

• A degree in Computer Science or a related field is preferred, but equivalent strong and demonstrated practical experience is absolutely fine. What matters most is your ability to demonstrate the above skills in practice.

What We Offer

• A team you’ll love working with - friendly, ambitious, and open to ideas. We value trust and collaboration.

• Fast professional growth - real ownership, freedom to make decisions, and the ability to influence the product’s direction.

• Flexible work format - work remotely or from our Kyiv office, whichever suits you best.

• Comfortable office location - close to the city center, without the noise and rush.

• Unlimited vacation and sick leave - we trust responsible adults to manage their time.

• English lessons - regular sessions with professional tutors, group or one-on-one, tailored to your level.

• Learning budget - we cover courses, training, and conferences to support your professional growth.

• Cutting-edge generative AI - work on technology that’s transforming how movies, games, and digital content are created. Your work will directly impact products used in high-profile creative projects worldwide.

• A results-driven culture - we focus on impact, not hours spent online. As a distributed team, we value clarity, simplicity, and effective collaboration.