Senior Software Engineer

comstruct is building the agentic workforce for procurement in European construction. They are looking for a Senior Software Engineer to join the Core team, focusing on expanding and scaling the Integrations platform and data processing system.

• Lead systems design: Drive the technical design and implementation of our new, asynchronous data processing platform.
• Build data pipelines: Develop and scale the systems that ingest and process data from diverse sources (emails, APIs, portals) and integrate with external systems (ERPs).
• Own data extraction: Take ownership of our data extraction services, including our existing LLM-based solutions, and help improve and scale them.
• Expand team ownership: Help the team take on new responsibilities, such as invoice processing and ownership of our public API, to create a unified approach to data processing.
• Provide technical leadership: Act as a senior technical voice on the team. You'll contribute to high-quality design, provide insightful code reviews, and informally mentor other engineers.
• Improve existing systems: Assess and improve the architecture, reliability, and performance of our current integration services.

• 5+ years of professional experience building and maintaining complex, mission-critical software products.
• Proven experience in a modern, high-level programming language (e.g., Python, Kotlin, TypeScript, Java, C#). We prioritize strong software engineering fundamentals, systems design skills, and the ability to learn over deep knowledge of one specific language.
• A self-driven and proactive attitude. You are comfortable navigating ambiguity and can take complex problems from concept to solution.
• Experience working in a startup or a similarly fast-paced product environment.
• A strong focus on building solutions that solve customer problems.
• Fluent in English (German is a plus).
• Experience designing and building message-driven, queue-based systems (e.g., Google Cloud Pub/Sub, RabbitMQ).
• Experience with cloud platforms, preferably GCP (AWS or Azure is also valuable).
• Interest or experience in data-intensive applications, data extraction, or applying LLMs.
• Familiarity with web scraping tools and techniques (e.g., Selenium).
• Experience building and maintaining public-facing APIs.