Valentin Hillard

Why this persona fits the audience

Advises founders and engineering leads on how to document systems before refactors and migrations. Regularly sketches C4 context and container diagrams for client workshops, then hands off files or screenshots they can keep updating themselves. Works alone or with a client’s 3-8 person engineering team, often across different countries and time zones.

• Age: 42
• Location: Berlin, Germany
• Occupation: Software Architecture Consultant
• Income: €110k-€140k freelance income
• Education: Diplom-Informatiker
• Company size: 1 (client teams 3-8)
• Years in role: 12

“The most valuable code is the code you understand, and the clearest path to understanding is through well-defined architecture.”

Valentin Hillard, 42, is an independent software architecture consultant based in Berlin, Germany, specializing in guiding small to medium-sized European tech teams through critical system refactors and migrations. Holding a Diplom-Informatiker from a respected German university, he transitioned from traditional software engineering roles over a decade ago to focus on the strategic, often overlooked, aspect of system documentation. His market fit is precisely in advising founders and engineering leads on how to meticulously document their systems *before* undertaking significant changes. He is known for his hands-on approach, regularly sketching C4 context and container diagrams during client workshops. These visual aids are not just ephemeral whiteboard sessions; Valentin ensures clients receive the diagram files or clear screenshots, empowering them to maintain and update the documentation independently. He thrives working solo or embedded within client teams of 3 to 8 engineers, frequently navigating the complexities of international collaboration across different countries and time zones. His income typically ranges between €110k and €140k annually, reflecting his specialized expertise and the value he brings to clients facing costly technical debt or migration challenges. Valentin's recent work involved helping a SaaS startup in Amsterdam map out their monolithic architecture before a planned microservices decomposition, a process that required extensive interviews and diagram iterations. He also advised a fintech company in Munich on standardizing their component diagrams to improve onboarding for new developers. He views his role as a facilitator of clarity and a transferor of knowledge, ensuring that the architectural blueprint is as robust as the code it represents. He is deeply committed to pragmatism, valuing solutions that are effective and maintainable over trendy but unproven technologies. His independence is paramount, allowing him to select projects that align with his expertise and ethical standards. The transfer of knowledge is a core tenet, as he aims to leave clients more capable than he found them, rather than creating dependency.

Background & daily life

A day in their life

Valentin's typical weekday begins around 7:30 AM with a strong coffee and a quick scan of Hacker News. He dedicates the morning to focused work, often tackling complex diagramming or writing detailed documentation for a current client. Around 10 AM, he might have a video call with a client team in Spain to review C4 container diagrams. Lunch is usually a simple, healthy meal prepared at home. The afternoon could involve another client sync, perhaps with a startup in Ireland, or independent research into a new database technology. He aims to wrap up client-facing work by 5:30 PM, leaving evenings for personal projects, reading, or a quiet dinner. He often spends an hour before bed reviewing technical articles or planning the next day's tasks.

Lifestyle

Valentin lives in a well-organized, minimalist apartment in Prenzlauer Berg, Berlin. His routine is structured, prioritizing focused work blocks. He enjoys cycling through the city's parks on weekends and occasionally visits art galleries. He cooks most of his meals, favoring healthy, simple dishes. While not a big spender, he invests in quality tools and comfortable living. Socially, he prefers smaller gatherings with close friends over large parties, often discussing technology or philosophy. He values his personal time for recharging and continuous learning.

Work life

As a solo consultant, Valentin's work is project-driven, focusing on helping small EU-based tech companies navigate complex system changes. His days are a mix of client calls, diagramming sessions, and independent research. He collaborates closely with engineering leads and founders, often finding himself the sole architect on a project. The pressure comes from delivering clear, actionable documentation and architectural guidance within tight client timelines. He spends significant time translating abstract technical concepts into visual models and written explanations, ensuring clients can maintain the documentation post-engagement.

Relationships

Valentin is primarily influenced by his professional network of fellow consultants and former colleagues, with whom he exchanges insights and referrals. He maintains a close relationship with his sister and her family in Munich. His friendships are long-standing, built on shared intellectual interests and mutual respect, often involving deep conversations over coffee or a quiet dinner.

How they decide

Valentin is a methodical researcher. He weighs options carefully, seeking out information from trusted sources, comparing approaches, and considering long-term implications. He is not easily swayed by trends and prefers solutions that are proven, practical, and efficient. He values clarity and evidence over hype.

How they sound

Speaks with a clear, measured cadence, using precise German-influenced English. Avoids slang and overly casual language, preferring professional but accessible terminology. His tone is calm and confident, conveying expertise without being condescending. He tends to use phrases like 'Essentially,' 'The core issue here is,' and 'From an architectural perspective.' He is direct but polite, focusing on facts and logical reasoning.