Senior Backend Software Engineer

Sunbound; New York, San Francisco (NY, CA); On-site; USD 180,000 - 230,000; Full time

Benefits offered by this job

Competitive salary with equity

Health insurance 90% covered

Fully paid parental leave

Unlimited PTO

AI-native environment

Job summary

Sunbound is seeking a Senior Backend Software Engineer to join early in our growth phase, collaborating closely with the CTO to shape the product and culture. This on-site role emphasizes architecture, scalable backend design, and cross-functional impact in a fintech-focused environment.

You will define solutions, own projects, and push for tooling improvements while delivering a world-class platform that supports a growing network of senior living operators.

Qualifications

• BA/BS or higher in CS or related field.
• 6–12 years of software development experience.
• Experience at fintech is a plus.
• Strong backend development proficiency.
• Experience building software solutions for complex business processes.
• Excellent written and verbal communication with non-technical stakeholders.
• Candidates based in New York or San Francisco; on-site 3 days/week.

Responsibilities

• Make architectural and engineering design decisions.
• Collaborate cross-functionally on product ideation and direction.
• Define solutions and own related projects.
• Propose, demonstrate, and implement improvements to our tooling stack.
• Help build an amazing, world-class product.

Skills

Backend development

Node.js

Rails

Flask

Express

Clear communication

Education

Bachelor's degree in Computer Science or related field

Tools

Express

Node.js

Rails

Flask

Job description

About Sunbound

Sunbound is Senior Living's Revenue Operating System.

We build AI-powered technology for assisted living and skilled nursing operators, giving them one connected platform to run their entire revenue operation. Admissions, private payments, Medicare and Medicaid claims, working capital. Everything between a resident moving in and the cash hitting the bank. Revenue on autopilot.

Senior living operators got into this business to care for people. But fragmented systems, manual follow-up, and endless admin work pull them in the wrong direction.

We fix that. Sunbound replaces manual revenue work with intelligent automation so operators get back to what matters: care.

The results:

• $1B+ in payments processed annually
• Operators across 45 states
• 40,000+ family interactions supported every year
• 99%+ net collection rates
• 95%+ on-time payments
• 40+ hours reclaimed per community per month
• 96%+ first-pass claims acceptance

Trusted by Sinceri, Bickford, Maplewood, Spring Oak, Compass, and Omega. Backed by world-class investors.

About the Role

We're looking for a Senior Backend Software Engineer to join our team and help us grow our product. This is an early engineering role and will carry a lot of opportunities to work closely with the CTO and shape company direction and culture.

Responsibilities

• Make architectural and engineering design decisions
• Collaborate cross-functionality on product ideation and direction
• Define solutions to new problems and own the related projects
• Propose, demonstrate, and implement improvements to our tooling stack
• Provide input into how offline processes can best be implemented in product
• Help build an amazing, world-class product

Skills and Qualifications

• BA or BS (or Master’s) in Computer Science or related technical discipline
• 6-12 years of experience in software development
• Experience at fintech companies a major plus
• Experience building software solutions incorporating disparate aspects of complex business processes
• Proficiency in backend development
• Proficiency with Node.js or other back end frameworks like Rails or Flask
• Proficiency with express
• Clear communication verbally and in writing with non-technical stakeholders
• Preferred candidates based in New York or San Francisco
• On-site 3 days a week in our office

Our Values

These aren't words on a wall. They're how we hire, give feedback, and make decisions every day.

• Care: The person behind the problem always comes first.
• Intellectual Honesty: Hard truths said early.
• Own the Outcome: We are all drivers, not passengers.
• Bias for Action: Bold moves, urgent execution.
• Precision Matters: We get it right because it matters.
• Play to Win: We find a way or make one.

Why Sunbound

If you're looking for a place where your work actually moves the needle, you found it.

We move fast, hold a high bar, and care deeply about doing things right. If that's how you're wired, you'll love it here. You'll be surrounded by people who are sharp, humble, and genuinely energized by the mission. A team that shows up for each other, celebrates wins loudly, and has real conversations early.

The impact is real too. Every feature shipped, every process improved, every customer supported has a direct effect on seniors and the families navigating one of the hardest transitions of their lives. That's not a marketing line. It's why people choose to stay.

And the benefits match the ambition:

• Competitive comp with equity so you own a piece of what you're building
• 90% of your medical premium covered
• Fully paid parental leave
• Unlimited PTO - and we actively encourage you to use it. Well-rested people do better work, make better decisions, and stay longer. Taking care of yourself isn't a perk here, it's part of the job
• An AI-native environment where we trust you to do your best work

We're building something special here. Come be part of it.

Equal Opportunity Employment

We are an equal opportunity employer. We welcome amazing people from all backgrounds, experiences, abilities, and perspectives. If you need a reasonable accommodation during the application process, email us [e-mail]