Senior Flutter Developer

Work type

Full Time

Category

Software Engineering

Industry

Fintech

We are looking for a seasoned Flutter Developer to lead the development of cross-platform solutions for our client's platform. In this role, you will take ownership of the Flutter technology stream, driving the design, architecture, and implementation of features across multiple platforms.

You will collaborate closely with backend engineers and the client's technical team to ensure seamless integration and consistent user experience. Beyond coding, you'll mentor junior Flutter developers, foster best engineering practices, and contribute to strategic technical discussions that shape the direction of the platform as a whole.

We're looking for Senior Flutter developer who has:

• 5+ years of hands-on experience in software development, and 3 years of Flutter and Dart, having built moderately to highly complex applications;
• Proven track record of leading or mentoring developers; able to influence and guide peers;
• Strong architectural mindset: experience in modularization, layering, state management (e.g. Bloc, Riverpod, Provider), dependency injection;
• Deep understanding of app lifecycle, widget tree, rendering pipeline, asynchronous programming, memory/performance optimization;
• Experience integrating with backend services: REST APIs, WebSockets, GraphQL, authentication, data serialization;
• Solid familiarity with testing (unit, widget, integration), debugging, profiling, performance tuning;
• Proficiency with version control (Git), CI/CD pipelines, automated deployment, code review processes;
• Strong communication skills: able to articulate complex technical concepts to non-technical stakeholders and clients;
• Self-driven, able to make technical decisions with autonomy and take responsibility for outcomes;
• Good problem-solving skills, attention to detail, and a mindset of craftsmanship.

Nice to have

• Experience with Web or Desktop Flutter (beyond mobile) or full Flutter platform development.
• Experience with native Web development, JavaScript, TypeScript, React
• Experience identity and access management solutions
• Experience working in a regulated environment (security, compliance).
• Experience with code metrics, static analysis, linting, and maintaining code health.
• Exposure to cross-cutting concerns: localization, accessibility, analytics, offline caching, push notifications.
• Experience with architectural patterns like Clean Architecture.
• Knowledge of security best practices (e.g. encryption, secure storage, authentication flows).
• Familiarity with backend technologies (e.g. Node, Java, .NET, etc.) to better understand integration considerations.

As a Senior Flutter developer you will:

• Take technical ownership of the Flutter-based and web (JavaScript, TypeScript) platform segments; drive architecture, design patterns, and code quality;
• Lead and mentor Junior Flutter engineers (2–3), guiding them with reviews, pair programming, and knowledge sharing;
• Participate in high-level technical discussions with backend teams, system architects, and the client's technical stakeholders;
• Translate business requirements into robust, maintainable, and scalable features; ensure alignment across frontend, backend, and platform layers;
• Define and enforce best practices: code standards, automated testing, CI/CD, code reviews, debugging protocols;
• Monitor technical debt, performance, and maintainability; propose and execute refactoring or optimization efforts;
• Be a technical liaison to the client: clarify requirements, communicate progress, surface risks, and propose solutions;
• Estimate work, help with sprint planning, prioritize tasks, and ensure deliverables adhere to timelines and quality constraints;
• Foster a collaborative culture: encourage feedback, continuous improvement, and learning within the team;
• Keep up with Flutter, Dart, and related ecosystem developments; evaluate new tools/libraries for adoption;
• Assist with recruitment, onboarding, and career development for your team members.

Description

We are building a Stable Coin Issuing Platform that supports operations for EMI and DASP legal entities involved in the issuance and distribution of stablecoins.

The project involves building the BE platform that integrates with

• Blockchain interface for minting and burning stablecoins
• Digital asset custody platform
• Payment bank
• Customer service center

Current phase: PoC.

Goals of PoC:

• Prove that we can mint and burn coins for chosen networks
• Create basic web self-service
• Demonstrate how our support operations will be organized

Project Team

15 people

We want you to thrive and feel supported

• Professional growth: at Kindgeek, we want our employees to grow and achieve ambitious professional goals. We support professional development with training and certification refunds and provide regular feedback and technical reviews.
• Benefits package: Kindgeek offers all team members competitive compensation and a benefits package that includes 18 working days of fully paid vacation, 10 compensated by 50% sick leaves without a note from the doctor, and an opportunity to take study leaves. Depending on how long you stay in the company, you can receive different health insurance packages from our partners.
• Personal growth:as a part of our team, you will have access to corporate English courses with a 50% reimbursement, take advantage of our offline library and access a large selection of corporate training and classes. Also, every employee can request any internal or external training or certification if it applies to his or her work responsibilities.
• Geek community: at Kindgeek, we value community – even in the full-scale invasion times, we take every opportunity to stick together. Our geeks organise various online and offline clubs – from stretching and skiing to English. We volunteer together and support each other.
• Flexibility:Kindgeek offers a hybrid working model. Team members can work remotely or from the office or Kindgeek London Hub – an innovative cafe-style co-working in Lviv (it's pet-friendly).

We encourage you to apply

At Kindgeek, we encourage everyone to apply – regardless of nationality, race, gender, marital status, disability, sexual identity, or religion. We are growing into an inclusive, equal-opportunity company where only professionalism, competence, and ideas matter. We are committed to supporting mobilised employees and veterans joining Kindgeek and facilitating their career development. We aim to bring equal opportunities to all team members and candidates – especially those underrepresented in technological companies.