Co-Team Lead – Senior Developer, Hamburg, Frankfurt, Vienna

everii Group

Co-Team-Lead & Senior Developer building Teambox, everii’s professional services automation product for 13,000+ DACH customers. Coding, sprint delivery, releases, and developer-team support in a hybrid role.

Posted 8/13/2026full-timeHamburg • 🇩🇪 GermanySeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates strong programming skills in PHP, TypeScript (React), and MariaDB, with a focus on agile development methodologies and technical leadership. Capable of translating product roadmaps into actionable increments while ensuring code quality and effective team collaboration.

Highest-signal resume keywords

PHP ProgrammingTypeScript (React) DevelopmentAgile Development (Scrum)Continuous Integration/DeliveryTechnical Leadership

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Hard Skills

PHP ProgrammingTypeScript (React) DevelopmentMariaDBAutomated TestingREST APIsGraphQL APIsAgile DevelopmentCI/CD PipelinesLinux Server ManagementContainer-Based Setups

Soft Skills

Clear CommunicationTeam OrientationConflict ResolutionFeedback DeliveryEmployee Development

Industry Keywords

SaaS ProductTechnical SupportCode ReviewsMonitoring and LoggingData-Centered Decision Making

Tech Stack

Tools & technologies

GraphQLLinuxMariaDBPHPReactTypeScript

About the role

Key responsibilities & impact

Work on the Teambox product in close collaboration with Design, Product, Operations and Customer Success
Spend ~70% of your time hands-on coding and support the Team Lead in leading a team of 6 developers
Think holistically about features and translate requirements into manageable tasks
Plan sprints, define priorities and capacities, and convert the product roadmap into actionable increments
Support technical leadership, collaboration and knowledge sharing within the development team
Accompany code reviews and validate architectural decisions together with the Lead
Continuously improve code quality, the tech stack and documentation
Implement in product-critical areas and work on complex technical topics
Ensure clean interfaces and robust solutions
Own stable and secure releases
Support troubleshooting across CI/CD pipelines and improve build, test and deployment processes
Monitor performance and stability, analyze incidents and error patterns, and derive sustainable improvements
Improve monitoring and logging where relevant
Work with Design, Product and Customer Success in short feedback loops
Promote data- and user-centered decision making

Requirements

What you’ll need

Ideally first experience in providing technical support or partial leadership of developer teams, e.g. 1:1s, feedback, employee development and conflict resolution
Ideally experience in deliberately using AI from the start as a driver in the development process
Experience with agile development, e.g. Scrum or pragmatically applied agile processes
Ability to translate roadmaps into realistic, actionable increments
Ideally experience with an established SaaS product on the market
Solid programming experience, ideally with PHP, TypeScript (React) and MariaDB
Maintainable and well-thought-out code with healthy pragmatism
Routine with automated testing as well as Continuous Integration/Delivery
Experience with REST and GraphQL APIs
Basic knowledge of working with Linux servers and container-based setups
Willingness and ability to develop further and to try new technologies in a reflective way
Clear and constructive communication and team orientation
Very good German and English, spoken and written

Benefits

Comp & perks

Room for autonomous work, creative freedom and continuous learning
Modern technical equipment
Flexible and self-directed working
Hybrid working model
Trust-based working hours
Fresh fruit, coffee and chilled drinks
Weekly breakfast in the office
Modern tools and technologies
Short decision-making paths
Permanent full-time employment
Immediate start possible