Senior .NET Software Engineer Tech Lead

European travel technology group operating across France, Germany, Italy, Poland, and Croatia. The group brings together several subsidiaries covering hotel marketplace, online booking tools for TMCs and corporates, corporate rates management, and travel services. Core business is B2B corporate travel management with hotel as the primary revenue driver, supplemented by air, rail, and car rental services. The platform has a 10+ year history, serving travel management companies and corporate clients with complex travel policy requirements.

European OBT (Online Booking Tool) platform serving corporate travel clients across France, Germany, Italy, Poland, and Croatia. Part of a larger international travel technology group. The air booking component is a microservice connecting to multiple airline suppliers (GDS, NDC, direct connects, aggregators). The platform requires performance stabilisation, improved observability, and continued feature development. Embedded team augmentation model — the person works as part of the client's development squad, not as an external consultant.

Distributed team across Vietnam, Poland (Białystok, Warsaw). Reporting into the client's Head of Development. Client is 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 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

• Interview process that respects people and their time
• Professional and open IT community
• Internal meet-ups and resources for knowledge sharing
• Time for recovery and relaxation
• Bright online and offline events
• Opportunity to become part of our internal volunteer community

• 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.

• Experience in agile product development environment
• 3+ years of team management and/or system design experience
• Degree in Computer Science or equivalent education or experience
• Extensive knowledge of used technologies (Backend: C#, .Net, Entity Framework, SQL; Frontend: JavaScript, HTML, CSS, SCSS, Angular JS, Angular)
• Extensive knowledge of used tools (Visual Studio, MS SQL Server, Azure DevOps, Azure Cloud, Docker, Redis)
• Extensive knowledge of topics in software design and architecture, software testing, system integration and system administration
• Working knowledge of continuous integration / continuous delivery
• Working knowledge of information security and privacy
• Understanding of product management, UX/UI design, IT service management
• Customer obsession
• Agile expertise, systems thinking, and
• Strong collaboration skills
• Knowledge of the concept “Working Backwards”