Co-Team Lead, Senior Developer

everii Group

Co-Team-Lead & Senior Developer working on Teambox product at everii. Engage in hands-on coding and team leadership to enhance product quality and usability.

Posted 7/14/2026full-timeHamburg • 🇩🇪 GermanySeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates strong technical leadership in guiding development teams while executing product roadmaps. Proficient in programming, automated testing, and agile methodologies, with a focus on delivering stable and secure software solutions.

Highest-signal resume keywords

PHP ProgrammingTypeScript (React) DevelopmentAutomated TestingContinuous Integration/Continuous Delivery (CI/CD)Agile Development (Scrum)

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Applicant Tracking System Keywords

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Hard Skills

PHP ProgrammingTypeScript (React) DevelopmentAutomated TestingContinuous Integration/Continuous Delivery (CI/CD)REST APIsGraphQL APIsLinux Server ManagementContainer-Based SetupsSaaS Product DevelopmentAgile Methodologies

Soft Skills

CollaborationTechnical LeadershipProblem-SolvingContinuous LearningUser Feedback Orientation

Industry Keywords

SaaSProduct RoadmapCode ReviewIncident AnalysisUsabilityPerformanceStabilitySecurity

Tech Stack

Tools & technologies

GraphQLLinuxMariaDBPHPReactTypeScript

About the role

Key responsibilities & impact

You will work on our Teambox product in close collaboration with Design, Product, Operations, and Customer Success.
You are ~70% hands-on with code and support our Team Lead in guiding the team of six developers and executing the product roadmap.
You think about features holistically, translate requirements into manageable tasks, and plan sprints.
You ensure clean implementation, testing, and deployment while considering usability, performance, stability, and security.
You support the Lead in the technical leadership of the team and foster collaboration.
Together with the Lead, you translate the product roadmap into actionable sprints.
You contribute technical ideas, assist with code reviews, and validate architectural decisions.
You implement in product-critical areas and ensure clean interfaces and robust solutions.
You are responsible for stable and secure releases and improve processes around build, test, and deployment.
You keep performance and stability in focus, analyze incidents/errors, and derive sustainable improvements.

Requirements

What you’ll need

Ideally some experience in technically supporting or co-leading development teams.
Ideally experience deliberately using AI from the outset as a driver in the development process.
Experience with agile development, e.g., Scrum or pragmatically adapted agile processes.
Ideally you have worked on an established market SaaS product.
Solid programming experience, ideally with PHP, TypeScript (React), and MariaDB.
Experienced in automated testing as well as Continuous Integration/Continuous Delivery (CI/CD).
Experience with REST and GraphQL APIs.
Basic knowledge of working with Linux servers and container-based setups.
You enjoy continuous learning and thoughtfully experimenting with new technologies.
You take pleasure in delivering results and receiving positive user feedback.
Very good German and English, both written and spoken.

Benefits

Comp & perks

Room for autonomous work, scope for shaping your role, and continuous learning.
Modern technical equipment, flexible and autonomous working, a hybrid working model, and trust-based working hours.
Fresh fruit, coffee, chilled drinks, and a weekly breakfast at our office.
Modern tools and technologies in a product-focused team with short decision-making processes.
Permanent full-time employment, start possible immediately.