What are the responsibilities and job description for the Senior Software Engineer (API) position at Employee Navigator?
About Employee Navigator
Have you used a web site to sign up for your annual benefits? That's what we build. There's a good chance you've even used our software since 100,000 companies nationwide use it.
We are SaaS business concentrating on letting employees enroll in benefits online. Our service provides web applications for employees to enroll in benefits and administrative portals for HR, insurance brokers, and insurance companies to configure benefits. We build APIs to handle B2B transactions with our insurance carrier and payroll partners -- hundreds of thousands of transmissions per day between us and the largest carriers and payroll companies.
You'll be exposed to advanced database querying on a large database (hundreds of millions of records), web applications used by millions of employees nationwide, and a large code base providing challenge and variety.
We’ve been recognized as one of The Washington Post’s Top Workplaces for eight consecutive years — and in 2025, we proudly earned our first Top Workplace award in Salt Lake City in our very first year of eligibility. Join us to help carry on our award-winning culture and be part of building something new and meaningful here!
About the Role
We’re currently looking for a senior backend engineer that will be primarily designing, building, and maintaining the APIs that power Employee Navigator’s benefits enrollment platform. You will be joining a team that works closely with business, product, and QA teams to deliver production grade APIs for both internal and external customers. We want someone with 7 years of experience in shipping and maintaining high usage, customer-facing, external APIs who can bring their expertise to help us expand our API products.
Our day-to-day work is in C# on .NET 8 with WebAPI, MVC and Vue.js at the front-end. We develop software as simple as forms for data capture to Roslyn-based C# class -> RESTAPI generators to custom patterns handling our enrollment engine. We believe the best part of development is planning out code and discussing it with peers before writing it. Micro-ORM, dynamic SQL, or stored procedures are all used depending on the best option. We like generics and functional techniques and really like code that is easy to read.
We use a Kanban process so that pace is driven by the task definition rather than an arbitrary time frame. So, we are looking for engineers who can make good decisions and find creative solutions. We work closely with our product owners -- and even executives -- to make sure features are understood and the right problems are being solved.
Here's What You'll Do Day-to-day
- Plan out API code and design features for real world usage.
- Work with internal customers and product managers to iterate rapidly on features.
- Contribute to external-facing documentation and developer portals for our APIs.
- Help your teammates with reviews of their code.
- Contribute to maintenance and reduce tech debt.
Minimum Qualifications
- Undergraduate degree required
- 10 years of professional experience, preferably with a mix of API and full-stack development.
- Proven in-depth knowledge of C#
- Strong attention to detail
- Experience with Vue.js is a plus but knowledge of JavaScript is required
