Staff Software Engineer - Community

TechBiz Global GmbH; Polska; Hybrid; PLN 200,000 - 320,000; Full time

Job summary

TechBiz Global is seeking a Staff Software Engineer to join one of our client's teams. This role emphasizes hands-on engineering leadership and scalable product development.

You will design architectures, write high-quality code in React/Next.js, mentor teams, and drive best practices across the engineering platform while collaborating with cross-functional partners. You should have a strong frontend foundation, experience across APIs and system boundaries, and a track record of delivering

Qualifications

• Strong hands-on experience building customer-facing web products using React and Next.js.
• Front-end engineering background with full-stack capabilities across APIs and integrations.
• Experience designing software architecture across complex systems and domains.

Responsibilities

• Design and implement scalable, high-performing app architecture.
• Write clean, well-documented code and conduct reviews.
• Lead architectural decisions and translate product needs into roadmaps.
• Mentor teams and promote best software engineering practices.
• Ensure security and protect against vulnerabilities.
• Collaborate with cross-functional teams to deliver features.

Skills

React

Next.js

Front-end engineering

API integrations

Communication

Mentoring / coaching

PHP

Vue.js

Domain-Driven Design

SOLID principles

Job description

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Staff Software Engineer to join one of our clients' team. If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you.

Responsibilities:

• Design and implement application architecture that is scalable, maintainable, observable, and high-performing.

• Write clean, efficient, and well-documented code.

• Conduct code reviews, review architecture, and contribute to engineering best practices.

• Identify and optimise performance bottlenecks across systems.

• Collaborate closely with cross-functional teams to deliver impactful features.

• Ensure application security, implementing safeguards against vulnerabilities.

• Take part and lead decisions for the major capabilities, helping teams translate business and product needs into clear, practical technical roadmaps.

• Serve as a product-engineering subject-matter expert (SME) for the domain, mapping capabilities into well defined domains and ensuring they deliver required business and product services within the wider technical platform.

• Lead by example through hands-on coding, creating new capabilities or evolving existing ones and driving adoption of best software engineering principles and practices, alongside continuous mentorship and guidance to the teams.

• Communicate complex solutions clearly to stakeholders inside and outside the area, while embedding a strong product engineering culture across teams.

1. Strong hands‑on experience building customer‑facing web products using React and Next.js.

2. A strong front‑end engineering background, ideally with full‑stack experience to work confidently across APIs, integrations and system boundaries.

3. Proven experience designing and evolving software architecture across complex systems, multiple codebases or related product domains.

4. A strong product engineering mindset, with the ability to translate product requirements into clear technical designs, staged delivery plans and high‑quality implementations.

5. Excellent communication skills, with the ability to explain complex technical decisions clearly to both technical and non‑technical audiences.

6. A coaching mindset — someone who enjoys helping others grow, raising standards and making best practices stick without ego.

7. Ideally you will also have:

8. Experience with PHP and Vue/Vue components.

9. Experience working on membership, community, personalisation, gamification or user‑retention products.

10. Experience working on high‑traffic websites.

11. Experience applying Domain‑Driven Design, SOLID, GRASP or other software design principles in a practical product environment.