Staff Software Engineer - Node.JS

TechBiz Global GmbH; Polska; Hybrid; PLN 180,000 - 270,000; Full time

Benefits offered by this job

Competitive salary

Flexible and supportive work environ-

Career growth opportunities

International team events

Inclusive and collaborative culture

Job summary

TechBiz Global is seeking a Staff Software Engineer to advance core product platforms and engineering capabilities for a global portfolio of products and services.

The ideal candidate leads scalable backend systems with hands-on coding, mentoring, and technical leadership across domains while shaping architecture and engineering standards.

Qualifications

• Proven experience delivering large-scale, customer-facing software products.

Responsibilities

• Lead technical decisions for major platform capabilities and translate business needs into practical technical roadmaps.
• Serve as a domain expert, defining scalable and maintainable domain boundaries and service architectures.
• Design, build, and evolve backend capabilities and APIs across multiple systems and domains.
• Take ownership of end-to-end product features, including scalability, reliability, and operational excellence.
• Drive engineering best practices through hands-on coding, mentorship, and technical leadership.
• Collaborate closely with product, engineering, and business stakeholders to deliver impactful solutions.
• Communicate complex technical concepts clearly to both technical and non-technical audiences.
• Promote modern software engineering practices including Domain-Driven Design (DDD), SOLID, GRASP, and API-first architecture.

Skills

Backend architecture

Domain-Driven Design

API-first

TypeScript/Node.js

Java/.NET/Python

Tools

AWS

Job description

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are looking for a highly experienced Staff Software Engineer to join a fast-growing engineering organization focused on shared capabilities and commercial services. In this role, you will contribute to the evolution of core product and engineering capabilities that power a global portfolio of products and services.

This is an opportunity to work on strategic, high-impact initiatives while helping shape engineering standards, architecture, and best practices across multiple domains. The ideal candidate is passionate about scalable backend systems, product engineering, technical leadership, and hands-on software development.

Responsibilities

• Lead technical decisions for major platform capabilities and translate business needs into practical technical roadmaps.

• Serve as a domain expert, defining scalable and maintainable domain boundaries and service architectures.

• Design, build, and evolve backend capabilities and APIs across multiple systems and domains.

• Take ownership of end-to-end product features, including scalability, reliability, and operational excellence.

• Drive engineering best practices through hands-on coding, mentorship, and technical leadership.

• Collaborate closely with product, engineering, and business stakeholders to deliver impactful solutions.

• Communicate complex technical concepts clearly to both technical and non-technical audiences.

• Promote modern software engineering practices including Domain-Driven Design (DDD), SOLID, GRASP, and API-first architecture.

• Proven experience delivering large-scale, customer-facing software products.

• Strong expertise in backend services, distributed systems, and application/data integration.

• Hands-on experience applying Domain-Driven Design (DDD) and API-first principles within multi-tenant platforms.

• Strong full-stack engineering background with deep understanding of software design patterns and best practices.

• Proficiency in TypeScript and Node.js preferred, or strong experience with backend technologies such as Java, .NET/C#, Kotlin, Python, or Go.

• Ability to translate product requirements into scalable technical designs and implementation roadmaps.

• Strong ownership mindset with the ability to drive projects end-to-end.

Nice to Have

• Experience with AWS cloud architecture and infrastructure design.

• Exposure to LLMs or AI-related technologies.

• Experience working on platform or shared-service architectures.

What’s Offered

• Competitive salary.

• Flexible and supportive work environment.

• Career growth and continuous learning opportunities.

• International team events and company gatherings.

• Opportunity to work alongside highly skilled engineers and technical leaders.

• Inclusive and collaborative culture that values diverse perspectives and experiences.