Staff Software Engineer (m/f/d)

Stuttgart / remote

Your Mission
At Conceptboard, we are building a collaboration product that enterprise customers, public institutions, and security-critical organizations rely on every day. For the teams developing this product to deliver at full speed at all times, they need a platform that gets out of their way – not one that slows them down.

As a Platform Architect / Staff Engineer, you will own the Core Platform Architecture – and you will build it yourself, hands-on. Your number one design constraint: the platform is never the bottleneck. You think in self-service capabilities, clean contracts, and clear boundaries – and you make the Platform Team the lighthouse of agentic engineering for the entire organization. This is not an ivory tower role: you set direction by shipping it.

Your Responsibilities

• Own the Target Architecture. You formulate, validate, and develop the architecture of the Core Platform – including the make-or-break decisions behind it. You are the primary point of contact for architecture ownership at the platform level, thereby relieving the existing architectural responsibility from a single person.
• Build Hands-on. You lead and personally contribute to the proof-of-concept that validates critical hypotheses – and then to the Platform Services themselves. You are a builder, not just a designer.
• Platform as a Product. You design services as self-service capabilities that keep module teams unblocked. Thinnest viable platform always beats gold-plating.
• Set and Protect Contracts & Standards. You define and ensure the contracts between the platform and module teams: APIs, boundaries, non-functional requirements – and ensure they are adhered to.
• Agentic-First from Day One. You establish disciplined agentic engineering practices within the Platform Team and make it the reference for the entire engineering organization.
• Lead by Example. You inspire your team with a platform-first mindset. Your team members grow by watching you – and by you living the standards you set.
• Alignment with the Architect. You work closely with the existing Architect to align and validate overarching architectural decisions.

Must-haves

• Hands-on Builder with a Strong Track Record. You have architected and built platforms or services at scale – and you still code. No pure architecture-by-PowerPoint background.
• Platform-as-a-Product Instinct. You have built self-service platforms that have made other teams faster. You know how platforms become bottlenecks – and actively design against it. Internal teams are real customers for you.
• Sound Engineering Practices. Testing, contracts, observability, CI/CD, clear boundaries – and the judgment to know which non-functional requirements actually matter.
• Genuine Motivation for Agentic Engineering. You want to build agentic-first with discipline, not with hype – and you want to model it for others.

• Experience in regulated environments with high compliance requirements.
• Relevant domain depth for a collaboration platform, e.g., Distributed Systems or Real-Time Architecture.
• Experience with agentic-first workflows – private or professional.

• Flexibility – Enjoy complete freedom regarding your work location and shape your working hours according to your needs.
• Autonomy – With us, you have the opportunity to work independently and autonomously, supported by a flat hierarchy and short decision-making processes.
• Internationality – We work in a global team that values and promotes cultural diversity. Our international network allows you to make contacts worldwide.
• Team Spirit – We know how important personal meetings are to strengthen team spirit. Therefore, we regularly organize social events.
• Competitive Compensation – You will receive an attractive salary package and 30 days of vacation per year.
• Employee Benefits – Take advantage of a variety of perks through our external Corporate Benefits partner.