Senior Automation Fullstack Developer

Link Group; Polska; Hybrid; PLN 240,000 - 420,000; Full time

Job summary

Link Group is seeking a Senior Fullstack Engineer to own end-to-end features across Next.js frontends, Python REST APIs, and event-driven workers on GCP. You will drive quality through automated testing and orchestration standards, collaborating with engineers, scientists, and business stakeholders.

The role emphasizes ownership, architectural input, and scalable delivery across a distributed team with modern cloud tooling.

Qualifications

• 5+ years of commercial fullstack experience with strong Python and TypeScript/React/Next.js skills.
• Proven track record in workflow/job orchestration and automated end-to-end/unit testing using Playwright and pytest.
• Hands-on experience with messaging queues (GCP Pub/Sub or similar), asynchronous workers, retry mechanisms, and failure handling patterns.
• Deep understanding of REST API design, SSO/OAuth authentication, and secure network perimeters.
• Strong knowledge of SQL databases (PostgreSQL schema design & migrations) and object storage (GCS / S3).
• Practical experience with distributed observability (logging, metrics, tracing, alerting) and CI/CD (GitHub Actions) and IaC (Terraform).
• End-to-end ownership and cross-functional communication.

Responsibilities

• Own the complete delivery lifecycle of core product features across Next.js, Python APIs, async workers, and GCP infrastructure.
• Define and enforce automated testing strategies (Playwright, pytest) and job/workflow orchestration standards for the team.
• Collaborate with engineers, scientists, and business stakeholders to scale solutions.

Skills

Python

TypeScript

React

Next.js

Unit testing

Playwright

pytest

GCP

PUB

REST API

SSO

OAuth

Data management

SQL

Storage

AWS S3

CI/CD

GitHub Actions

IaC

Terraform

Angielski

Tools

GitHub Actions

Terraform

Docker

Kubernetes

Pub/Sub

Job description

• Python
• TypeScript
• React
• Next.js
• Unit testing
• Playwright
• pytest
• GCP
• PUB
• REST API
• SSO
• OAuth
• Data management
• SQL
• Storage
• AWS S3
• CI/CD
• GitHub Actions
• IaC
• Terraform
• Angielski

Requirements (Must-Have)

Please note: All listed requirements below are strictly mandatory for this position.

• Fullstack Mastery: 5+ years of commercial fullstack experience with strong Python and solid TypeScript / React / Next.js skills.
• Automation & Testing: Proven track record in workflow/job orchestration and automated end-to-end/unit testing using Playwright and pytest .
• Event-Driven Systems: Hands-on experience with messaging queues ( GCP Pub/Sub or similar), asynchronous workers, retry mechanisms, and failure handling patterns.
• Enterprise Integrations: Deep understanding of REST API design, SSO / OAuth authentication, and secure network perimeters.
• Data Management: Strong knowledge of SQL databases ( PostgreSQL schema design & migrations) and object storage ( GCS / S3 ).
• Observability & DevOps: Practical experience with distributed observability (logging, metrics, tracing, alerting) alongside working knowledge of CI/CD (GitHub Actions) and IaC (Terraform) .
• Mindset & Soft Skills: End-to-end accountability ( ownership mindset ), excellent problem-solving ability, and clear communication with cross-functional teams (engineers, scientists, and business stakeholders).
• Feature Ownership: Own the complete delivery lifecycle of core product features across Next.js, Python APIs, async workers, and GCP infrastructure.
• Automation & Quality Standards: Define and enforce automated testing strategies (Playwright, pytest) and job/workflow orchestration standards for the team.
• Event-Driven Architecture: Design and operate resilient background processing workers utilizing Pub/Sub, async queues, retry policies, and dead-letter failure handling.
• Enterprise Integrations: Connect applications with internal systems and third-party enterprise services via REST APIs, SSO/OAuth, and secure network boundaries.
• Data & Infrastructure: Design PostgreSQL schemas, manage database migrations, operate object storage (GCS/S3), and maintain Infrastructure as Code (Terraform, GitHub Actions).
• Observability & Reliability: Set up logging, metrics, tracing, and alerting to ensure reliable production delivery of distributed cloud services.

Opis oferty

We are seeking a Senior Fullstack Engineer who takes end-to-end ownership of features—from initial architecture and implementation to production monitoring. In this role, you will build and scale Next.js frontends, Python REST APIs, and event-driven background workers hosted on GCP. Additionally, you will act as a quality advocate by setting automation standards (testing, orchestration, CI/CD) across the engineering team.

• Start ASAP

We're a bunch of super-dedicated and passionate people who truly believe in making a difference and delivering amazing results on a huge scale.

We're the real deal when it comes to expertise:

We've got a whopping 100,000 IT specialists in our network

73% of our experts are seasoned pros with over 8 years of experience

78% of the specialists in our network have at least 2 years of experience working in distributed teams

And get this, we conduct 99% of our candidate interviews online and from afar.

Join the group of high-performing tech consultants