Lead Developer - Full-stack / PHP

Are you an experienced developer with a passion for coaching, technical alignment, and streamlining development processes? Do you want to take the lead in realizing complex software solutions while simultaneously elevating your team to the next level? If so, we are looking for you!

What will you be doing?

As our Development Lead , you are the linchpin between technology, the team, and management. You are not only responsible for developing high-quality software, but you also play a crucial role in the growth of your team members and the overall effectiveness of our development cycles. Your focus rests on three main pillars: Leadership & Management , Technical Excellence , and Operational Control .

Your key responsibilities:

• Coaching & Mentoring: You conduct weekly 1-on-1 meetings with your direct reports. You coach team members on their daily tasks and serve as a mentor for their professional and personal development.

• Team Performance: You lead operational team meetings and are responsible for the team's efficiency and effectiveness. You manage the workload and resource planning.

• AI-First Mindset: You are active in developing with AI assistants, Agents, and Skills. You are enthusiastic about the transformation toward AI-driven development and are capable of leading your team through this transition.

• HR & Resource Planning: You conduct performance reviews, handle HR matters (such as leave and absence), and collaborate with People Ops on HR-related issues within your team.

• Technical Alignment: You ensure alignment between different teams and oversee that everyone adheres to established compliance and security guidelines.

• Product Development: You work closely with Product Managers to refine PRDs (Product Requirements Documents), devise technical solutions, and translate these into concrete development tasks.

• Quality & Workflow: You identify and communicate improvements in the workflow. Additionally, you prepare technical refinements for key issues (e.g., through POCs or documentation).

Sven’s tip for new 12Builders:

“Finding your own style and using it to inspire your colleagues is strongly encouraged!”

12Who?

With a healthy dose of Drive, Openness, and Happiness, we are working towards a transparent construction industry. We are not just a SaaS platform that connects construction companies and fosters collaboration; we are also the market leader in the Netherlands.

We have been around for nearly twenty years and are still growing. Our team now consists of more than 90 colleagues, working together from two offices and various home offices across Europe. A significant portion of the construction world in the Benelux, Germany, and Denmark already relies on our platform and uses our software daily. And we have the ambition to conquer all of Europe!

What do we expect from you?

• Experience: You have a proven track record in software development and are accustomed to taking the lead in complex projects. Key stack characteristics: PHP, Javascript / Typescript, Vue.js, Microservices, AWS, MySQL, Docker.

• Leadership: You have experience managing a team and gain energy from mentoring and guiding people.

• Technical Depth: You are capable of analyzing complex problems, applying in-depth domain knowledge, and communicating clearly about these topics to stakeholders (such as the Product Manager).

• Stay Up-to-Date: You continuously maintain your technical knowledge and stay informed about the latest trends in software development, particularly AI agentic development .

• Quality-Oriented: You have experience with DevOps processes (such as CI/CD), infrastructure management, and monitoring system performance.

• Strong Administration: You ensure accurate WBSO administration (R&D tax credit documentation) and keep documentation in codebases and Confluence up-to-date.

What do we offer you?

• An engaging role within a growing, international SaaS scale-up.

• A high degree of autonomy, flat hierarchies, and short lines of communication. Read here how we do that.

• Flexible work options, both from home and at the office.

• A dedicated, supportive team that thrives on collaboration.

• Team events and ample opportunities for personal development.

• Choose your own hardware: Windows, Mac, or Linux—everything is possible.

You’ve taken the time to read this entire text. That says it all, doesn’t it? So, go ahead and apply!

Do you have any questions or are you still a bit hesitant? No problem! Feel free to send an email to Leonie from HR ( Het emailadres op 12build.recruitee.com bekijken ).

See you soon!

Agencies and recruiters: we love finding our new colleagues ourselves, so acquisition is not appreciated.