Senior Python Software Engineer

<p style="min-height:1.5em">Synthflow AI is an enterprise AI agent platform that unifies customer operations across voice, chat, and messaging. Our agents handle routine interactions at scale so teams can focus on high-value work.</p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Over <strong>20M hours</strong> of operations automated</p></li><li><p style="min-height:1.5em"><strong>60% more</strong> calls answered vs. non-AI operators</p></li><li><p style="min-height:1.5em">150M interactions handled, <strong>99.99% uptime</strong></p></li></ul><p style="min-height:1.5em">Backed by Accel, Atlantic Labs, and Singular. Trusted by 1,000+ customers. Recognized as one of the most promising companies in Germany.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>About the role:</strong><br /><br />We’re looking for a Senior Python Engineer to craft reliable, production-ready software and backend systems, with a strong emphasis on databases, scalable APIs, and engineering fundamentals.<br /><br /><strong>Your responsibilities will include:</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Develop and maintain our backend infrastructure, focusing on scalability, performance, and reliability.</p></li><li><p style="min-height:1.5em">Design and evolve data models and persistence layers with a strong focus on PostgreSQL and database best practices (schema design, migrations, query performance, indexing, transactions).</p></li><li><p style="min-height:1.5em">Build and maintain enterprise-grade APIs (e.g., FastAPI), including versioning, authentication/authorization, and observability.</p></li><li><p style="min-height:1.5em">Engage in pair programming to improve code quality and collaboration.</p></li><li><p style="min-height:1.5em">Manage deployments and environments using Kubernetes and GitOps practices (ArgoCD).</p></li><li><p style="min-height:1.5em">Conduct code reviews, providing constructive feedback and upholding best practices.</p></li><li><p style="min-height:1.5em">Contribute to product delivery end-to-end, including occasional work on front-end features when needed.</p></li></ul><p style="min-height:1.5em"><br /><strong>You have:</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">5+ years of experience as a Python developer, shipping production systems.</p></li><li><p style="min-height:1.5em">Strong experience building scalable and extensible data infrastructure.</p></li><li><p style="min-height:1.5em">Deep familiarity with relational databases, especially PostgreSQL (performance tuning, migrations, transactions).</p></li><li><p style="min-height:1.5em">Experience building and maintaining enterprise-grade APIs with FastAPI.</p></li><li><p style="min-height:1.5em">Hands-on experience running production workloads on Kubernetes.</p></li><li><p style="min-height:1.5em">Experience with Argo CD (GitOps deployment workflows).</p></li><li><p style="min-height:1.5em">Experience with GitHub Actions.</p></li><li><p style="min-height:1.5em">Proficiency in cloud environments (preferably GCP or AWS).</p></li></ul><p style="min-height:1.5em"><br /><br /><strong>Nice to have:</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Ability to contribute to front-end work (not necessarily a front-end specialist), ideally with React/TypeScript.</p></li><li><p style="min-height:1.5em">Golang experience, with willingness to contribute to our orchestration stack, which is built in Go</p></li></ul><p style="min-height:1.5em"><br /><strong>What we offer:</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Autonomy at speed: High-ownership roles in a fast-moving startup.</p></li><li><p style="min-height:1.5em">Engineering-first environment: Work on foundational systems that directly impact reliability and scale.</p></li><li><p style="min-height:1.5em">Career growth: Scale your impact as the company grows.</p></li><li><p style="min-height:1.5em">Rewarding package: Competitive pay, equity options, and comprehensive benefits that reflect your skills and experience.</p></li></ul><p style="min-height:1.5em">Founded in Berlin in 2023 by serial entrepreneurs Albert Astabatsyan, Hakob Astabatsyan, and Sassun Mirzakhan-Saky, Synthflow AI democratizes access to advanced voice AI with a no-code platform that lets <strong>enterprises easily create, deploy and scale</strong> natural-sounding, cost-effective voice agents tailored to their business needs.</p><p>Find <a href="https://www.arbeitnow.com">Jobs in Germany</a> on Arbeitnow</a>