Senior Software Engineer

Job Description

Job Description

Senior Software Engineer, Backend / Full Stack

Cytronic | Concord, CA | Hybrid

Cytronic is building the software and robot-powered operations behind modern fulfillment, warehousing, and logistics. We help e-commerce brands manage inventory, process orders, and deliver with greater speed and accuracy.

We are hiring our second full-time software engineer. You will join the CTO and our first engineer to build and scale the systems powering order management, warehouse operations, fulfillment, and customer-facing workflows.

This is a backend-leaning full-stack role with significant ownership. You will work primarily in Python and Django while contributing across the product, infrastructure, and frontend when needed to deliver complete solutions.

• Design, build, and maintain backend systems and APIs using Python and Django.
• Own features from problem definition through database design, implementation, deployment, and production monitoring.
• Build software supporting fulfillment, inventory, order management, and warehouse operations.
• Work directly with operations and business teams to turn real-world workflow challenges into scalable software.
• Partner with the CTO and first engineer on architecture, technical priorities, and product delivery.
• Improve the reliability, security, performance, and observability of production systems on AWS.
• Contribute to frontend applications and internal tools when needed to deliver a strong end-to-end experience.
• Help establish practical engineering standards for testing, code review, documentation, CI/CD, and incident response.
• Shape Cytronic’s engineering culture and contribute to future technical hiring as the team grows.

• Five or more years of professional software-engineering experience, or equivalent evidence of senior-level ownership.
• Strong production experience with Python and Django.
• Experience designing APIs, relational data models, and maintainable backend systems.
• Experience deploying and operating production services on AWS.
• The ability to work across the stack and independently deliver complete features.
• Sound judgment when balancing speed, scalability, reliability, and maintainability.
• Comfort turning ambiguous business or operational needs into clear technical plans.
• Strong communication skills with technical and nontechnical teammates.
• Interest in working closely with warehouse operations and physical systems.

• Experience in logistics, fulfillment, warehousing, supply chain, or third-party logistics.
• Experience with React, TypeScript, or another modern frontend framework.
• Experience with event-driven systems, distributed systems, integrations, or real-time data.
• Familiarity with warehouse-management, order-management, carrier, or e-commerce platforms.
• Interest in robotics, AI, physical systems, or operational automation.

• Join early and have meaningful influence over architecture, product direction, and engineering practices.
• Own production systems that directly affect customers and physical operations.
• Work closely with decision-makers, users, and warehouse teams.
• Solve challenging problems at the intersection of software, logistics, automation, and robotics.
• Help shape the engineering team as Cytronic grows.

This is a hybrid role based in the Concord, California area. Regular in-person collaboration is important because our software is closely connected to warehouse operations, robotics, and physical workflows. The specific weekly schedule will be discussed during the interview process.

Base salary: Competitive Base Salary plus equity and full benefits

Interested in building software that moves the physical world? Apply here or contact Ashley Vallett at Technacity Group email: View email address on ziprecruiter.com.

Cytronic welcomes qualified candidates from a range of backgrounds. If the role is exciting to you but you do not meet every preferred qualification, we still encourage you to apply.