Senior/Staff Software Engineer

Overview
This role is a senior individual contributor with clear ownership over systems that directly impact warehouse operations, fulfillment accuracy, and customer outcomes. Senior and Staff Engineers at Flowspace are expected to operate close to real-world workflows, understanding how software decisions affect associates on the floor, support teams, and customers under time pressure.

This role balances technical excellence with operational responsibility. It requires pragmatic decision-making in imperfect systems, strong cross-functional collaboration, and accountability for outcomes rather than just designs. Engineers in this role are comfortable engaging with ambiguity, supporting live operations, improving systems incrementally while they are actively in use, and using modern AI-assisted development tools responsibly to accelerate delivery without sacrificing code quality, system understanding, or ownership.

What You’ll Do:

• Write and ship production code regularly. Own what you build, write tests, and contribute directly to core product functionality.
• Collaborate with engineers, product managers, and designers to deliver solutions that meet customer and internal needs.
• Build clean, maintainable software in a complex operational domain.
• Support upgrades, training, and implementation as needed to ensure successful adoption.
• Estimate work, complexity, and timelines with accuracy, and deliver against those estimates.
• Break initiatives into clear, actionable milestones and execute effective, low-disruption rollouts.
• Contribute to technical direction and performance considerations through collaboration and informed judgment.
• Use AI-assisted development tools to improve development speed, problem-solving, and code quality, while maintaining full understanding and ownership of the code being shipped.
• Operate as a reliable team member who is collaborative, respectful, and aligned with Flowspace culture.
• Participate in support and escalation rotations, debugging and resolving urgent customer-facing issues.

Who we're looking for: 

• 5 or more years of professional software development experience.
• Experience building and operating production systems with real-world operational impact.
• Web application development experience with ReactJS or similar frameworks.
• Strong understanding of computer science fundamentals, system design, and tradeoff-driven architecture.
• Ability to work through ambiguity, gather feedback from non-technical stakeholders, and deliver under real constraints.
• Comfort working with AI-assisted development tools as part of day-to-day engineering work, with the ability to evaluate and validate generated output.

Bonus Points: 

• Experience with Ruby on Rails or similar backend frameworks.
• Prior exposure to logistics, fulfillment, warehousing, or other operationally complex domains.
• Experience supporting or building systems used by non-technical operators in high-pressure environments.

Join our team!

• Meaningful equity in a venture backed start-up. Everyone gets stock options!
• Competitive Salary
• Top of the line medical, vision, dental, and life insurance
• Flexible time off, plus a separate banks for sick time
• Paid parental leave
• Mental Health / Wellness benefits + discounts for certain programs
• Work From Home stipend, towards your home office
• 401K with matching
• A clear success path within the company. We want you to grow and lead with us!

At Flowspace, we know that the more inclusive we are, the better our work will be, and we strive to hire and retain talent that represents a variety of backgrounds, perspectives, and skill sets.

We are committed to equal opportunity employment and we take pride in encouraging diversity, equity, and inclusion across all of our teams, without regard to race, color, religion (including religious dress and religious grooming practices), sex, gender (including gender identity and gender expression), national origin, age, physical and mental disability, medical condition (including pregnancy, childbirth, breastfeeding and related medical conditions), genetic predisposition or carrier status, marital, parental or registered domestic partnership status, sexual orientation, transgender status, military or veteran status, or any other characteristic protected by applicable law.

Please note: We do not accept resumes from external staffing agencies or independent recruiters for any of our openings unless otherwise directed or approved by our HR, Recruiting Department. Please do not forward resumes to our hiring managers or offices. Flowspace is not responsible for any fees related to unsolicited resumes/applications, that have not first been approved.

Disclaimer

The above job description is meant to describe the general nature and level of work being performed. It is not an exhaustive list of all responsibilities, duties and skills required for the position. Employees will be required to follow any other job-related instructions and to perform other job-related duties requested by their supervisor in compliance with Federal and State Laws. All job requirements are subject to possible modification to reasonably accommodate individuals with disabilities. Some requirements may exclude individuals who pose a direct threat or significant risk to the health and safety of themselves or other employees.

Requirements are representative of minimum levels of knowledge, skills and/or abilities. To perform this job successfully, the employee must possess the abilities or aptitudes to perform each duty proficiently. Continued employment remains on an “at-will” basis.