Staff Software Engineer - Social Gaming

TechBiz Global GmbH; Polska; Hybrid; PLN 260,000 - 520,000; Full time

Benefits offered by this job

Competitive salary

Flexible working environment

Growth opportunities

International team-building events

Collaborative environment

Inclusive workplace

Job summary

TechBiz Global seeks a Staff Software Engineer to shape the architecture behind real-time tournament systems and build scalable backend services for a global user base. You will design, implement, and ship features end-to-end while collaborating with product managers and designers in a fast-paced environment.

You will drive technical excellence, review code, and contribute to architectural decisions, ensuring security and reliability for a high-performance product in the social gaming space.

Qualifications

• Experience delivering large-scale production systems.
• Strong understanding of Domain-Driven Design and API-first design.
• Proficiency in JavaScript/TypeScript and Node.js or PHP.
• Experience with Pub/Sub, WebSockets and SSE.
• Experience with scalable backend and platform architecture.
• Product engineering mindset and ability to translate business requirements into technical solutions.
• Strong problem-solving skills and ability to thrive in fast-paced environments.

Responsibilities

• Design scalable, maintainable, observable, and high-performing architecture.
• Develop clean, efficient, well-documented code following best practices.
• Contribute to architecture decisions, code reviews, and standards across the team.
• Identify and optimize performance bottlenecks.
• Collaborate with engineers, product managers, and designers to deliver features.
• Ensure application security and safeguards against vulnerabilities.
• Apply DDD, SOLID, and GRASP principles.
• Proven experience delivering large-scale production systems.

Skills

Domain-Driven Design

API-first architecture

JavaScript/Node.js/PHP

Pub/Sub/WebSockets/SSE

Scalable backend systems

Product engineering mindset

Problem solving

Team collaboration

Tools

React/Next.js

Node.js

PHP

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.

We are looking for a highly skilled Staff Software Engineer to help shape the technical foundation of a fast-growing product within the social gaming industry. This role is ideal for someone passionate about building scalable backend systems, solving complex engineering challenges, and driving technical excellence in a high-performance environment.

You will play a key role in designing and implementing the architecture behind real-time tournament systems, ensuring reliability, scalability, security, and outstanding performance for a global user base.

Responsibilities

• Design and implement scalable, maintainable, observable, and high-performing application architecture.
• Develop clean, efficient, and well-documented code following engineering best practices.
• Contribute to architecture decisions, code reviews, and technical standards across the engineering team.
• Identify and optimize system performance bottlenecks.
• Collaborate closely with engineers, product managers, and designers to deliver impactful features.
• Ensure application security and implement safeguards against vulnerabilities.
• Apply modern software engineering principles including Domain-Driven Design (DDD), SOLID, and GRASP.

• Proven experience building and delivering large-scale production systems.

• Strong understanding of Domain-Driven Design, API-first architecture, and software design patterns.
• Strong proficiency in JavaScript (React/Next.js) or another backend language, ideally Node.js or PHP.
• Experience with Pub/Sub systems, WebSockets, and Server-Sent Events (SSE).
• Experience working with scalable backend and platform architecture.
• Product engineering mindset with the ability to translate business requirements into technical solutions and deliver features end-to-end.
• Strong problem-solving skills and ability to thrive in fast-paced environments.

Nice to Have

• Experience with MySQL.
• Experience building white-label products.
• Background in real-time systems or gaming-related platforms.

What's Offered

• Competitive salary
• Flexible working environment supporting work-life balance.
• Opportunities for professional growth and development.
• International team-building events and company gatherings.
• Collaborative environment with highly skilled professionals.
• Inclusive and diverse workplace culture that values different perspectives and experiences.