Development Team Lead

Goelett; Warszawa; On-site; PLN 180,000 - 280,000; Full time

Job summary

Goelett is seeking a Development Lead in Warsaw to own end-to-end product development for the squad, guiding design and delivery while mentoring engineers. You will drive the value stream, align with engineering standards, and collaborate closely with the Product Manager to set goals and improve team metrics.

You will lead architectural decisions, ensure quality, and focus on security, scalability, and performance to deliver reliable software for corporate clients. Fluency in English is required.

Qualifications

• 7+ years of professional software development experience.
• Experience leading engineering teams and setting technical direction.
• Strong hands-on experience with C#/.NET, SQL and enterprise software development.

Responsibilities

• Own end-to-end product development for the squad—design, guide, and deliver features that solve customer problems.
• Lead the Value Stream within the Goelett Product House, aligning with group engineering and product standards.
• Mentor developers to improve engineering practices and velocity.
• Collaborate with Product Managers to set goals, manage sprints, and track KPIs.
• Address architecture, security, scalability, and performance to maintain product reliability.

Skills

C#/.NET

SQL

Azure

Docker

CI/CD

Automated testing

Agile

Engineering leadership

Mentoring

English fluent

Tools

Azure DevOps

Job description

In Goelett, we are an extraordinary mix of travel industry experts, product, and software engineers, developing a successful online booking tool for corporations and large organizations. Today, as a part of the sector leader S4BT Group, we support 500k+ business users making thousands of bookings a day.

We are seeking a Development Lead who will own end-to-end product development, lead agile Value Stream to deliver scalable solutions, and elevate team capability through hands-on mentorship and architectural excellence. As part of Goelett’s two-in-a-box model. The Development Lead works hand-in-hand with a Product Manager, sharing end-to-end ownership for delivery, KPIs, and team outcomes.

What you will be doing:

• Own end-to-end product development for the squad- Design, guide, and deliver features that solve customer problems, working backwards from user needs to technical solutions.
• Lead the Value Stream within the Goelett Product House, ensuring alignment with group engineering and product standards. Collaborate with Product Managers to set goals, manage sprints, drive and improve team metrics, and ensure quality delivery through effective mentorship of developers. Collaborate closely with QA teams in other locations to ensure continuous delivery and 12-hour development cycles.
• Be accountable for key delivery metrics such as cycle time, release quality, and customer adoption.
• Eliminate customer pain points - Fix bugs, analyze root causes, resolve technical debt, and address security, scalability, and performance issues to maintain product reliability and customer trust.
• Drive technical excellence - Provide architectural guidance, design system components, prepare technical specifications, and develop comprehensive testing strategies to ensure quality at scale.
• Validate and innovate - Perform technology analysis, proof-of-concepts, and system evaluations to identify opportunities and reduce risk before customer impact.
• Deploy and scale solutions - Ensure seamless product deployment on existing environments while designing for future growth and evolving customer demands.
• Build engineering capability - Foster best practices, share knowledge, and develop team skills to increase velocity and deliver customer value faster.

What we're looking for:

• 7+ years of professional software development experience, including 5+ years in a Technical Lead, Team Lead, Engineering Lead, or similar role.
• Strong hands-on experience with C#/.NET, SQL, and enterprise software development.
• Strong knowledge of software architecture, system design, scalability, performance, security, and integration.
• Experience with Azure, Docker, CI/CD, automated testing, and modern software development practices.
• Proven experience leading and mentoring engineering teams, setting technical direction, and improving engineering practices.
• Experience working in an Agile product development environment, closely partnering with Product, QA, and other stakeholders.
• Strong ownership and problem-solving mindset, with the ability to balance customer needs, delivery, and technical excellence.
• Strong communication and collaboration skills; fluent English.
• Experience in travel technology is a big plus.