Senior Full-Stack Engineer
PLANEKS · UA · Віддалено
What We Offer
100% remote work opportunity and flexitime - choose working hours between 8:00-20:00 Kyiv time.
Personal Growth Budget in USD (Travel, Health & Psychotherapy, Sports, Education & Training, Software, Work Equipment).
Competitive compensation in USD with regular salary reviews.
Paid vacation, holidays, and sick leave.
Continuous professional growth through mentorship, feedback, and knowledge sharing.
English Speaking Club with a native speaker.
Access to AI tools, including coding assistants for engineers and LLM subscriptions for non-technical specialists.
Projects with clients across Europe and North America across FinTech, Logistics, Hospitality, E-commerce, Legal, Music, and other industries.
Transparent processes, flat management structure, and a supportive team culture.
About the Role
We are hiring a Senior Full-Stack Engineer to become one of the strongest technical contributors on the team.
The single most important thing we’re looking for is experience scaling a SaaS product. We want someone who has already seen what happens as a live platform grows: increasing complexity, technical debt, scaling bottlenecks, evolving data models, unreliable integrations, and engineering decisions that worked at one stage but became expensive at the next.
This is a hands-on senior engineering role with strong technical leadership expectations. You will design and write production code, own substantial systems end to end, influence architectural decisions, challenge technical direction when needed, and raise the engineering level of the people around you.
Project
FinTech SaaS platform built for the restaurant and hospitality industry. Our products handle tip pooling and payouts, payroll, reporting and compliance, labor and operational data, and integrations with the systems hospitality businesses already use. The platform is live, serves thousands of customers and moves millions of dollars.
Required Hard Skills
Several years operating at Senior Engineer level on a SaaS product that grew significantly while you were there. You have seen a system become meaningfully bigger and understand the problems that tend to arrive next.
Strong Python and Django / Django REST Framework experience, or deep experience in a closely comparable backend stack.
Strong React and TypeScript experience, with the ability to work effectively across backend and frontend when required.
Strong PostgreSQL and data modeling skills. You should be comfortable designing schemas that can evolve as the business grows into new products and safely changing them once they contain production data.
Production experience with asynchronous and distributed workloads using Celery or comparable technologies.
Strong understanding of API design and third-party integrations, including failure handling, retries, idempotency, data consistency, reconciliation, and situations where the system on the other side is unreliable or outside your control.
Strong understanding of software architecture and the ability to make pragmatic architectural decisions inside a large existing codebase rather than only designing systems from scratch.
Experience identifying and addressing performance, scalability, reliability, and maintainability problems before they become critical.
Strong testing practices and experience safely evolving systems that must remain operational while they are being changed.
Production experience with Docker, CI/CD, monitoring, error tracking, and observability.
Strong Linux knowledge.
Sound judgment about technical debt: knowing the difference between an acceptable shortcut and one that will create significant problems later, and being able to improve a system while it remains in production.
Everyday experience with using AI agents for work (Claude Code or Codex). Familiar with configuring AI toolset, understanding pros and cons of modern AI.
Current Stack
Django / DRF, PostgreSQL, Redis, Celery, Docker, Traefik, Datadog, Sentry, Mailgun, GitHub Workflows.
Next.js, MUI, TanStack Query, React Hook Form, Zod, Vitest.
Nice to Have
FinTech or financial systems experience, particularly payments, payouts, ledgers, reconciliation, payroll, banking, audit trails, or other systems where financial correctness matters.
Experience with restaurant or hospitality technology, including POS, scheduling, workforce management, payroll, or similar systems.
Experience with high-volume or business-critical third-party integrations.
Experience improving a system with meaningful legacy code or technical debt while the product remained actively developed.
Experience with multi-tenant SaaS architectures.
Experience improving engineering practices across a team rather than only within your own work.
Experience as a Senior Engineer in a company of roughly 20–200 people, where your role included helping decide what technical work actually mattered.
Required Soft Skills
Ability to take technical ownership beyond your own tickets and think about the health of the product and engineering system as a whole.
Strong engineering judgment and the confidence to challenge technical decisions constructively, including decisions made by Staff Engineers and engineering leadership.
Comfort with ambiguity. Problems will not always arrive fully specified, and part of your job is asking the questions that make them clear before code gets written.
Ability to explain complex technical trade-offs clearly to engineers, Product, and non-technical stakeholders.
A strong teaching mindset. You explain your reasoning, document important decisions, review code seriously, and make the engineers around you better rather than becoming the only person who understands a difficult system.
Comfortable taking leadership during difficult technical situations without waiting for someone else to define every step of the solution.
Strong written communication and self-direction. The team is distributed across Canada and Europe with limited live overlap, so you need to communicate clearly asynchronously and drive your own work.
Fluent Englis…