Старший Frontend разработчик (Flutter + Web)

Что предстоит делать

<p>We are a product-focused IT company that is actively scaling and expanding its presence in international markets.</p><p>Our business model is built on performance marketing and subscription-based monetization of mobile and web applications.</p><p>In 2025, we launched a new product — an AI-educational application that helps people master AI, develop their careers, and unlock new opportunities.</p><p>The product has been on the market for over a year, and our end users are primarily from Tier-1 countries and other markets around the world.</p><p>We currently have an open position for a <strong>Senior Frontend Developer (Flutter + Web)</strong></p><p><b>Skills:</b></p><p>— 5+ years of backend development experience with Node.js/TypeScript, including 2+ years hands-on with NestJS in production;<br>— Strong command of MySQL: query optimization, indexing, performance tuning;<br>— Working knowledge of a TypeScript ORM in a production backend (e.g. MikroORM, or similar);<br>— Practical use of Redis (caching, queues);<br>— Background with job/task queues or message brokers (BullMQ or similar) — any hands-on exposure is valuable, exact tool is flexible;<br>— Solid grasp of REST API design and implementation, including documentation (Swagger/OpenAPI);<br>— Hands-on experience with AWS, Docker, and CI/CD in day-to-day development;<br>— Comfortable with monitoring and observability tooling — structured logging, error tracking (e.g. Sentry), and ideally metrics/tracing;<br>— Regular practice writing unit and integration tests as part of the development process;<br>— Real-world use of AI coding tools (Claude Code, Cursor or similar) in development work — not just casual use.</p><p><strong>Would be a plus:</strong></p><p>— Strong experience integrating third-party payment providers (Stripe, PayPal, Braintree or similar) — webhooks, signature verification, idempotency, retries, reconciliation;<br>— Experience building or maintaining internal admin/CRM tools — comfortable with CRUD-heavy systems, dynamic form-driven configuration, and permission/role management; <br>— Experience with A/B testing infrastructure — understands how test variants, funnels, and product configurations are tracked and evaluated.</p><p><b>What you’ll do:</b></p><p>— Design, build, and maintain our Payment Service — a dedicated service handling integrations with multiple payment providers, including webhook handling, signature verification, subscription lifecycle events, retries, and reconciliation logic;<br>— Develop and extend features in our internal CRM/admin panel — product configuration, user management, funnel and A/B test tooling, localization management;<br>— Work with the team on our infrastructure migration to AWS — adapting backend services to run reliably in the new environment;<br>— Improve monitoring and observability — structured logging, error tracking, and alerting to catch issues before they affect users;<br>— Investigate and fix backend performance issues — slow queries, inefficient caching, database bottlenecks under production load;<br>— Use AI coding tools as part of daily development — speeding up implementation, reviewing code, and exploring solutions, while critically validating AI-generated output;<br>— Write and maintain tests (unit, integration) to keep critical flows — especially payment and checkout — reliable through changes;<br>— Participate in code review, technical planning, and architecture decisions for the backend services you’ll own;<br>— Collaborate closely with frontend, QA, and product to ship features end-to-end, from design through production.</p><p><b>We offer:</b></p><ul><li><b>Remote-First culture: </b>We provide a flexible working schedule and you can work anywhere in the world</li><li><b>Health taking care program:</b> We provide Health insurance, mental health support (psychologist compensation), sport compensation, and 20 paid sick days.</li><li><b>Personal Equipment Policy:</b> We provide all necessary equipment for your work. For Ukrainian employees we also provide Ecoflow</li><li><b>Vacation Policy</b>: Each employee in our company has 20 paid vacation days and extra days on the occasion of special evens</li><li><b>Knowledge sharing:</b> We are glad to share our knowledge and experience in our internal events</li><li><b>English Lessons:</b> We provide corporate English lessons to support your professional and personal growth.</li><li><b>Professional Development:</b> Annual learning budget for courses, training, certifications, and conferences.</li><li><b>Public Holidays:</b> You receive days off according to the official public holidays of your country of residence.</li><li><b>Coworking Compensation (Ukraine):</b> We provide coworking space compensation for employees located in Ukraine.</li></ul><p><b>Hiring process:</b> <br>Recruitment Screen 👉Tech interview 👉 Final interview 👉Job Offer</p> <div> <a href="https://jobs.dou.ua/companies/applyft/vacancies/368228/#reply-btn-id">Відгукнутись на вакансію</a> </div>