Senior Software Engineer, Back End

. Own and build key backend systems that power Evertune’s product experience .

Posted 4/20/2026full-timeSeattle • Washington • 🇺🇸 United StatesSenior💰 $150,000 - $200,000 per yearWebsite

Tools & technologies

CloudPython

Key responsibilities & impact

Own and build key backend systems that power Evertune’s product experience
Design, build, and maintain scalable backend services, APIs, and application logic in Python
Ship product-facing backend features that support customer workflows, insights, and AI-driven experiences
Design resilient APIs, optimize backend performance, and improve system reliability as product usage grows
Integrate and test third-party APIs, including LLM providers like OpenAI, Anthropic, Google, and others
Collaborate closely with product, design, and engineering to turn complex requirements into clean, reliable systems
Model and manage data in ways that support evolving product needs and scalable application development
Debug and troubleshoot issues across backend services, integrations, and production systems
Influence backend architecture and technical decisions that help the team move quickly and sustainably
Contribute to a team culture that values speed, craft, ownership, and candor

What you’ll need

Must currently be located in the Seattle area and able to work in-office 2-3x/week
7+ years of experience building and shipping production software for user-facing or B2B products, with substantial depth in backend engineering
Experience building scalable backend systems in Python or similar languages, with Python highly preferred
Strong fundamentals in system design, data modeling, testing, debugging, and performance optimization
Track record of building reliable product-facing services and integrations that directly support customer workflows
Comfortable working across APIs, databases, cloud infrastructure, observability, and CI/CD
Strong product instinct and a collaborative approach to working with product, design, and frontend engineers
AI-forward and actively using AI tools / LLMs to improve speed, quality, and engineering leverage
Strong communication skills, technical judgment, and comfort operating in a fast-moving startup environment.

Comp & perks

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Hard Skills & Tools

Pythonbackend systemsAPIsdata modelingtestingdebuggingperformance optimizationscalable application developmentintegrationsAI tools

Soft Skills

collaborationcommunicationtechnical judgmentproduct instinctownershipcandor