Responsibilities:

We are looking for a senior mobile engineer with strong iOS production experience, real backend hands-on ability, and a practical AI-native workflow.


What you will do:

1. Own mobile feature delivery end-to-end: from product logic and UI flow to API integration, QA, TestFlight, and App Store release readiness.
2. Implement iOS flows in Swift/UIKit and work with existing iOS architecture and legacy code.
3. Debug, refactor, stabilize, and improve performance without unnecessary rewrites.
4. Integrate backend APIs and help shape API contracts between mobile and backend.
5. Contribute to backend changes when a feature requires it: APIs, scripts, services, or backend-adjacent functionality.
6. Work with Firebase, configuration layers, analytics, release layers, and product experimentation setup.
7. Build and integrate AI-powered product flows, including text and voice coach experiences.
8. Use AI tools and agentic workflows across coding, testing, documentation, and delivery — while fully owning the final engineering output.

Candidate Expectations & Technical Expertise:

1. Strong commercial iOS experience with Swift and UIKit, 4+ years preferred.
2. Experience with real production mobile applications and ability to own iOS feature delivery end-to-end: app logic, UI flow, API integration, edge cases, debugging, QA, TestFlight, and release preparation.
3. Ability to work with existing iOS architecture and legacy code: refactoring, stabilizing, improving performance, and shipping without unnecessary rewrites.
4. Strong understanding of REST APIs, mobile/backend integration patterns, auth flows, error handling, retries, caching, backward compatibility, and release impact.
5. Ability to think about API as a contract between backend and mobile app: data structure, required and optional fields, error states, edge cases, and expected app behavior.
6. Real backend hands-on experience. You do not need to be a backend specialist, but you should have written or changed server-side logic, APIs, scripts, services, or backend-adjacent functionality.
7. Experience with configuration and release layers: Firebase, feature flags, environment configuration, analytics, QA, or product experimentation setup.
8. Practical AI-native engineering workflow with tools like Claude, Cursor, Copilot, ChatGPT, or agentic systems — with the judgment to verify, review, and fully own the output.
9. Strong engineering ownership: you clarify requirements, understand dependencies, surface risks, communicate trade-offs, and drive features to production-ready state.
10. Ability to work in a startup environment with changing priorities, imperfect systems, and high responsibility.
11. Fluent Russian for team collaboration and professional English for documentation, product discussions, and technical materials.

Nice to have:
Experience with Drupal, PHP, Pantheon, Firebase Remote Config, AI integrations, LLM-powered features, voice AI, Amplitude, CI/CD for iOS, Fastlane, GitHub Actions, GitLab CI, MariaDB, Redis, Solr, Varnish, monitoring tools, EdTech, gamified learning products, or working as the main mobile engineer in a small product team.

BRAYN Skills to Explore:

• Soft Skills: Strong leadership and communication abilities, with a focus on collaboration and team-building.
• Meta Skills: Strategic thinking, problem-solving, and a commitment to continuous learning and adaptation.
• Life Skills: Emotional intelligence, resilience, and a global perspective, aligning with BRAYN's commitment to diversity and ethical practices.

About company and product: BRAYN is a dynamic startup company at the forefront of edutainment, blending technology with creative education. We're dedicated to transforming learning experiences through innovation and are looking for a Senior Mobile Full-Stack Engineer to help drive our mission forward. More at www.brayn.app

What BRAYN Offers:

• A core role in a small AI-native team with high trust, high responsibility, and direct product impact.
• Hands-on experience with AI-native engineering: agentic workflows, AI-assisted development, and company-level AI tooling applied to a real production product — not a greenfield demo.
• Remote-first, async-friendly work: we keep meetings to a minimum, rely on clear written communication, and trust people to work in a way that helps them do their best work.
• A Community of Innovation and Passion: At BRAYN, you'll be part of a dynamic and dedicated team that's committed to transforming the landscape of edutainment. Our startup environment is fueled by creativity and a shared mission to revolutionize learning through technology.
• Focused on Your Growth: While we are still evolving as a company, we are deeply committed to your professional development. As we grow, we aim to continuously enhance the opportunities for career advancement and learning. We value innovation and personal growth, and we're excited to support your journey as part of our team.
• Transparent and Fair Compensation: We understand the importance of fair compensation and are committed to providing a competitive salary that reflects your expertise and contribution to our mission. Additionally, we offer 4 weeks of paid annual leave, with the first 2 weeks becoming available after 6 months of employment. As BRAYN evolves and achieves success, we look forward to enhancing our benefits package to further reward and support our team.
• An Honest and Forward-Thinking Workplace: At BRAYN, we believe in being transparent about our current capabilities and our vision for the future. We're not just offering a job; we're inviting you to join us on an exciting journey where your contributions will have a lasting impact on the field of edutainment.

Stages of Recruitment:

1. Basic Screening of Recruitment Specialist
2. Job Interview with Head of Development and Technical Consultant
3. Cultural Fit Interview with 2 Brayn Team Members
4. Job Offer