About the Position

Fullstack Software Engineer

Senior • Hybrid

100 - 120 PLN

Kraków, Poland

About the Role

You will be assisting in the understanding, architecture, implementation, and quality of core Product Roadmap items intended to drive the project for our client forward. The ability to work with the team and collaborate is essential. You will have an immediate impact and be an early figure in the company today to help drive our growth.

You will focus on solidifying our product and making it resilient as well as learning how to roll out enterprise-ready features.

Responsibilities

Assist in understanding, architecture, implementation, and quality of core Product Roadmap items
Collaborate with the team to drive the project forward
Focus on solidifying the product and making it resilient
Learn how to roll out enterprise-ready features

Requirements

Required skills /knowledge and production experience:
- React + TypeScript
- Next.js (App Router) - routing, server/client components, API routes
- REST API, data validation (example - Zod)
- PostgreSQL and ORM (Drizzle or similar - Prisma/TypeORM)
- Work according to the team's conventions and architectural documentation (ADR-y) - the ability to read and follow established standards before writing code
- Git, code review, ticketing (Jira)
- Minimum of 5 years of professional developer experience with hands-on skills.
Communication and other required skills:
- Git, code review, ticketing (Jira)
- Independence in problem analysis and a willingness to plan before implementation (the project requires a written plan/ADR before each new feature).
- Accuracy and attention to detail-working with healthcare data requires caution when changing the schema and access logic.
- Good written communication-documentation, PR descriptions, tickets, and code review comments.
- Comfortable working in a distributed/remote team and asynchronous communication.
- Openness to feedback and a willingness to propose simpler solutions instead of over-engineering (the project explicitly avoids over-engineering).
- Sense of responsibility (ownership) for the delivered functionalities from design to implementation.
- Advanced English - hard must - daily calls with native CTO or CEO (weekly). Ability to discuss technical problems, describe concepts, architecture, or planned features.

Nice to Have

Supabase (Auth, RLS, Postgres)
AWS: S3, SQS, Lambda - designing or integrating with data processing pipelines (multipart upload, task queuing, workers)
Terraform / IaC - ability to read infrastructure definitions (no need to write them yourself)
Working with video / media data / large-volume files (e.g., recording processing, LiDAR, wearable data)
Designing permission systems (RBAC) for multiple user roles
OpenAPI / API contracts, documenting endpoints
Experience in health, sports, telemedicine, or other sensitive/regulated data
Application observability (Sentry, PostHog, or similar)
Real-time integrations (chat/video SDKs like CometChat, WebSocket)

We Offer

Awesome and highly intense product /sports and health/
Private medical care and multisport card
Flexible working hours (you can start between 8:00 -10:00 a.m.)
Your choice of computer: Mac OS/Linux/Windows
Upskilling budget
English discussion classes every week
Parking spot few mins from office
Employee recommendation program

About the Company

Codahead

Codahead is a company operating in the IT industry, with a focus on software development and project management. The company is based in Kraków and emphasizes a collaborative and innovative work environment. Codahead values flexibility, offering a range of benefits such as flexible working hours, extensive training, and an animal-friendly office. The company is committed to customer satisfaction and smooth cooperation, with a strong emphasis on communication and project management methodologies, particularly Agile/Scrum. Codahead is known for its innovative projects and a supportive work culture that includes regular team integration events and celebrations.

Fullstack Software Engineer

Job description