Principal Full-Stack Engineer (Global)

Cincsystems; Poland; On-site; PLN 337,268 - 421,585; Full time

Job summary

A leading software firm in Poland is seeking a Principal Full-Stack Engineer to lead a cross-functional product team while being hands-on in architecture and implementation. This role requires over 12 years of experience in software engineering, particularly in developing event-driven microservices. Strong leadership skills and a deep understanding of full-stack development are essential. You will champion best engineering practices and contribute to a transformative AI-native platform.

Qualifications

• 12+ years of professional software engineering experience.
• Proven experience designing and building event-driven microservices.
• Strong understanding of distributed systems and API design.
• 5+ years of experience leading or managing software engineering teams.
• Demonstrated ability to balance hands-on engineering and leadership.

Responsibilities

• Lead and develop a high-performing product engineering team.
• Remain hands-on in the codebase, contributing to critical features.
• Design and build event-driven microservices.
• Collaborate with Product and Design for software translation.

Skills

Full-stack development

Event-driven microservices

Distributed systems

API design

Cloud-native architectures

Extreme Programming (XP)

Applied AI engineering

Job description

CINC Systems is the leading provider of accounting and management software for the community association management industry. Our platform supports tens of thousands of associations and millions of homes, operating in a complex, multi-tenant SaaS environment with high expectations for reliability, security, and scale.

We are evolving CINC into an AI-native, event-driven platform built on strong software engineering fundamentals. The Principal Full-Stack Engineer plays a critical role in making that transformation real by leading a product team while remaining deeply hands-on in architecture and implementation.

About the Role

The Principal Full-Stack Engineer is a senior technical leader and people manager responsible for leading a cross-functional product team while actively designing and building software. This is a true player‑coach role for an engineer who takes pride in the craft, thrives on complex problem‑solving, and understands that great teams and great systems are built together.

You will be accountable for technical direction, delivery outcomes, and team health, while partnering closely with Product, Design, Platform, and Data teams. As a Principal, you will also influence engineering standards and architectural decisions beyond your immediate team.

Key Responsibilities

• Lead and develop a high‑performing product engineering team, creating the conditions for sustained delivery and learning
• Remain hands‑on in the codebase, contributing to system design, critical features, and complex integrations
• Design and build event‑driven microservices that are scalable, observable, and resilient
• Apply full‑stack engineering expertise across backend services, APIs, and user‑facing applications
• Champion Extreme Programming (XP) practices such as pairing, test‑driven development, continuous integration, and small batch delivery
• Partner with Product and Design to translate customer needs into well‑designed, high‑quality software
• Collaborate with Platform and DevSecOps teams to ensure services are production‑ready and aligned with platform standards
• Establish and uphold high standards for code quality, system design, and operational excellence
• Mentor and coach engineers, providing frequent feedback and supporting career growth
• Contribute to architectural discussions and help align team decisions with broader platform and AI strategy
• Explore and apply applied AI techniques where they meaningfully improve product capabilities or developer productivity

Qualifications

Technical Expertise

• 12+ years of professional software engineering experience across full‑stack development
• Proven experience designing and building event‑driven microservices in production environments
• Strong understanding of distributed systems, API design, and data consistency patterns
• Experience working across frontend and backend systems with complex business logic
• Familiarity with cloud‑native architectures and managed cloud services
• Background in Extreme Programming (XP) practices is a strong plus
• Experience with applied AI engineering, including integrating AI‑powered capabilities into software systems, is a plus

Leadership and Management

• 5+ years of experience leading or managing software engineering teams
• Demonstrated ability to operate as a player‑coach, balancing hands‑on engineering with people leadership
• Experience owning outcomes for a product team, including delivery, quality, and team health
• Strong communication skills, able to align engineers, product partners, and stakeholders
• Structured thinker who can navigate ambiguity and make pragmatic decisions

Mindset and Values

• Builder at heart with deep respect for the craft of software engineering
• Believes that strong fundamentals and XP practices are essential, especially in AI‑enabled systems
• Customer‑obsessed, focused on delivering real value through reliable software
• Learning‑first attitude, staying current with modern engineering and AI practices
• Calm under pressure and disciplined in execution
• Values teamwork, trust, and shared ownership over heroics

What Success Looks Like

• The team consistently delivers high‑quality software with smooth flow and minimal friction
• Event‑driven services are reliable, observable, and easy to evolve
• XP practices are embedded in daily work and improve both quality and learning
• Engineers on the team grow in skill, confidence, and autonomy
• The Principal Full‑Stack Engineer is trusted as both a technical leader and people leader

CINC is an Equal Opportunity Employer of women, minorities, protected veterans and individuals with disabilities