Senior Flutter Developer

Hoorya; Polska; Presencial; PLN 240.000 - 360.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Remote work option

Health care

Medical expense reimbursement

Online morning exercise

Education

Training and conferences

Pluralsight access

AltexSoft library access

Mentor during probation

Mentorship Hub program

Descripción de la vacante

AltexSoft is seeking a Senior Flutter Developer to join a product team that builds a premium travel and hospitality mobile app. You will own Flutter/Dart architecture, performance, and end-to-end delivery, shipping new features while ensuring a fast, stable experience for real travelers.

You bring 5+ years of experience, strong code quality with unit/widget/integration tests, and a proactive approach to debugging, performance tuning, and AI-assisted development.

Formación

• 5+ years of commercial software development experience with Flutter/Dart
• Strong Flutter/Dart architecture, state management, and performance optimization
• Experience with asynchronous Dart (Futures/Streams) and REST APIs
• Proven track record shipping production mobile apps and maintaining them
• Experience with mobile CI/CD pipelines and automated testing for Flutter apps
• Experience with WebView-based functionality and integrating web content

Responsabilidades

• Build and ship new features for the Flutter mobile app
• Evolve search, booking, payment, loyalty and other user-facing functionality
• Integrate with REST APIs and external services
• Maintain and improve app stability and performance
• Investigate production issues and provide timely fixes
• Write and maintain automated tests for Flutter components
• Collaborate with QA, architecture, frontend, and project management teams
• Adopt AI-assisted tools to improve development and testing processes

Conocimientos

Flutter

Dart

Async programming

REST APIs

Testing Flutter apps

CI/CD

WebView

Debugging

Descripción del empleo

We are looking for Senior Flutter Developer Europe, Nigeria Software Engineer , Mobile , Flutter

Join AltexSoft as a Senior Flutter Developer on a product team building the mobile experience for a premium travel and hospitality brand. You’ll help evolve an established, high-traffic booking app — shipping new functionality while keeping it fast, stable, and dependable for real travelers making real bookings. It’s a strong fit if you combine deep Flutter expertise with a product mindset, enjoy owning technical problems end-to-end, and are curious about using AI to work smarter, from code generation to testing and debugging.

About Project

You’ll work on the mobile app for an online travel agency representing 400+ luxury hotels across 75 countries through its own booking ecosystem. The app covers flexible room search and filtering, booking and payment flows, a shopping cart, and loyalty programs that combine hotel discounts with an internal points-based rewards system. It’s under continuous development to keep engagement high and deliver a reliably premium experience for guests booking upscale stays. On the technical side, the app is built in Flutter with WebView-based screens and integrates with a CMS, Leonardo for image management, and hospitality platforms like Salesforce and SynXis.

You Have

• 5+ years of commercial software development experience, with strong hands‑on work in Flutter and Dart
• Deep proficiency in Flutter and Dart — application architecture, state management, widget composition, and performance optimization
• A solid grasp of asynchronous programming in Dart, including Futures and Streams
• Experience integrating REST APIs, handling JSON serialization, and managing API-related errors and edge cases
• A track record of shipping and maintaining production‑grade mobile applications
• Familiarity with mobile CI/CD pipelines and automated build/deployment processes
• Experience writing and maintaining unit, widget, and/or integration tests for Flutter apps
• A good handle on mobile performance, debugging, logging, and troubleshooting
• Experience with WebView‑based functionality and integrating web content into mobile apps
• Strong problem‑solving skills and the confidence to investigate and resolve complex issues independently
• A habit of taking ownership of your tasks, making sound technical calls, and flagging risks early
• Experience working in a collaborative Agile team
• Hands‑on use of AI coding assistants (Cursor, GitHub Copilot, or similar) in daily development
• Genuine interest in AI‑assisted engineering — using it to improve development, testing, debugging, documentation, and productivity
• Upper‑intermediate English, spoken and written, with confidence communicating with international teams and clients

Would be a plus

• Experience with mobile apps in travel, hospitality, e‑commerce, or booking
• Experience with payment flows, booking systems, loyalty programs, or other transactional features
• Experience integrating mobile apps with CMS platforms and third‑party enterprise systems
• Familiarity with Salesforce, SynXis, or similar hospitality/travel tech integrations
• Experience with image/content management platforms such as Leonardo or similar
• Understanding of WebView‑based hybrid app architectures
• Experience with Firebase or similar mobile backend/analytics services
• Experience with automated release processes for App Store and Google Play
• Awareness of application security and best practices for protecting user and payment data
• Experience building AI‑powered features or integrating AI pipelines/APIs into a product — or using AI beyond code generation, e.g., for testing, debugging, technical analysis, disposition

You Are Going To

• Build and ship new features for the Flutter mobile app
• Help evolve search, booking, payment, loyalty and other customer‑facing functionality
• Integrate mobile functionality with REST APIs and external services
• Keep existing functionality stable and reliable as you maintain and improve it
• Investigate and resolve production issues and technical defects
• Take part in support, troubleshooting, and ongoing app maintenance
• Write and maintain automated tests to keep new and existing functionality solid
• Work closely with QA, Solution Architecture, frontend, and project management throughout the development lifecycle
• Spot opportunities to improve performance, maintainability, and the development process itself
• Bring in modern engineering practices and AI-assisted tools wherever they genuinely help
• Communicate progress, risks, and possible solutions clearly to technical and non-technical stakeholders alike

We offer Work-life Balance

• Possibility to work remotely
• Health Care
• Reimbursement of medical expenses
• Online morning exercise
• Education
• Compensation for trainings, seminars, conferences
• Free access to the Pluralsight and ACloudGuru knowledge base
• Access to the AltexSoft library with top‑notch materials
• A mentor for a probation period
• Engagement in our Mentorship Hub program as a mentor or a mentee to foster professional growth and development

Development

• Horizontally — master new technologies at internal courses
• Vertically — choose your own career path through Competency trees

Recognition Program

All your activities are marked by points that can be exchanged for gifts to fit any taste.

Contact our Talent Acquisition Specialist Daphne Iheme [e-mail]