We are a product-focused IT company that is actively scaling and expanding its presence in international markets.
Our business model is built on performance marketing and subscription-based monetization of mobile and web applications.
In 2025, we launched a new product — an AI-educational application that helps people master AI, develop their careers, and unlock new opportunities.
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.
We currently have an open position for a Senior Backend Developer (Node.js).
Skills:
5+ years of backend development experience with Node.js/TypeScript, including 2+ years hands-on with NestJS in production;Strong command of MySQL: query optimization, indexing, performance tuning;
Working knowledge of a TypeScript ORM in a production backend (e.g. MikroORM, or similar);
Practical use of Redis (caching, queues);
Background with job/task queues or message brokers (BullMQ or similar) — any hands-on exposure is valuable, exact tool is flexible;
Solid grasp of REST API design and implementation, including documentation (Swagger/OpenAPI);
Hands-on experience with AWS, Docker, and CI/CD in day-to-day development;
Comfortable with monitoring and observability tooling — structured logging, error tracking (e.g. Sentry), and ideally metrics/tracing;
Regular practice writing unit and integration tests as part of the development process;
Real-world use of AI coding tools (Claude Code, Cursor or similar) in development work — not just casual use.
Would be a plus:
Strong experience integrating third-party payment providers (Stripe, PayPal, Braintree or similar) — webhooks, signature verification, idempotency, retries, reconciliation; -
Experience building or maintaining internal admin/CRM tools — comfortable with CRUD-heavy systems, dynamic form-driven configuration, and permission/role management; -
Experience with A/B testing infrastructure — understands how test variants, funnels, and product configurations are tracked and evaluated;
What you’ll do:
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;
Develop and extend features in our internal CRM/admin panel — product configuration, user management, funnel and A/B test tooling, localization management;
Work with the team on our infrastructure migration to AWS — adapting backend services to run reliably in the new environment;
Improve monitoring and observability — structured logging, error tracking, and alerting to catch issues before they affect users;
Investigate and fix backend performance issues — slow queries, inefficient caching, database bottlenecks under production load;
Use AI coding tools as part of daily development — speeding up implementation, reviewing code, and exploring solutions, while critically validating AI-generated output;
Write and maintain tests (unit, integration) to keep critical flows — especially payment and checkout — reliable through changes;
Participate in code review, technical planning, and architecture decisions for the backend services you’ll own;
Collaborate closely with frontend, QA, and product to ship features end-to-end, from design through production.
We offer:
Remote-First culture: We provide a flexible working schedule and you can work anywhere in the world
Health taking care program: We provide Health insurance, mental health support (psychologist compensation), sport compensation, and 20 paid sick days.
Personal Equipment Policy: We provide all necessary equipment for your work. For Ukrainian employees we also provide Ecoflow
Vacation Policy: Each employee in our company has 20 paid vacation days and extra days on the occasion of special evens
Knowledge sharing: We are glad to share our knowledge and experi
