Senior Software Engineer I, Product Experience

About Solstice Analytics The market for employee benefits is broken. Companies spend millions annually on employee benefits that employees neither value nor regularly use. Founded in 2017, Solstice Analytics set out to build a better model by challenging traditional one-size-fits-all approaches. Solstice Analytics’s flexible benefits software helps companies offer competitive benefits packages while reducing costs and inefficiencies, by giving employees more choice and flexibility in how they spend their benefit allowances. The platform also saves HR professionals countless hours managing and supporting various point solutions. Using Solstice Analytics, companies can select from a suite of products that include Lifestyle Spending Accounts, Health Spending Accounts, Health Reimbursement Arrangements, Flexible Spending Accounts, and more to design and deliver customized benefits programs–all through a single platform. Employees then have three choices to spend account funds: The Solstice Analytics Store with discounted products and services, The Solstice Analytics Visa Card, or claim reimbursement backed by Solstice Analytics’s world-class member support team. Solstice Analytics has helped hundreds of the world’s most admired companies, including Stripe, Zoom, Lululemon, and Affirm, design and support flexible, inclusive benefits programs for nearly a million employees. And, we are seeing great success with 98% customer retention, 75 NPS, and 98 CSAT ratings from members. Solstice Analytics is backed by Emergence Capital and Ribbit Capital and has received numerous awards for its exponential growth, its software innovation, and as a “Great Place to Work.” About the Role Join our Product Experience (PX) team and help build the systems behind Solstice Analytics's member and admin experience - the member portal, admin portal, mobile app, and the integrations that power them. You'll work across the stack to deliver intuitive, secure, and scalable experiences that members and customer admins rely on every day. This role is fullstack-preferred, but we're also open to strong backend engineers who are eager to grow into fullstack work. You Will Design, build, and maintain backend services that power Solstice Analytics's benefits platform — including APIs for account lifecycle, transactions (claims, reimbursements, contributions), and member management. Work across React/TypeScript/NestJS services, contributing to whichever codebase the work requires. Build and consume event-driven integrations using Google Pub/Sub, enabling reliable communication between services. Write well-tested, production-ready code and take ownership of your services in production - including on-call responsibilities, monitoring (Datadog), and incident response. Collaborate closely with product, ops, customer success teams and engineers across the different teams to deliver features that serve members, customer admins, and internal operations teams. Contribute to engineering standards, tooling, and processes that help the team ship faster and more reliably. Use AI tools thoughtfully as part of your workflow - we encourage engineers to leverage AI assistants to accelerate development, improve code quality, and explore solutions faster, while maintaining strong judgment and ownership of the work they ship. Preferred Skills 2–5 years of professional experience building backend services and APIs. Strong proficiency in TypeScript/NestJS Solid experience with relational databases, particularly PostgreSQL - schema design, query optimization, and migrations. Experience with event-driven architectures or messaging systems (e.g., Pub/Sub, Kafka, SQS/SNS) is a strong plus. Familiarity with cloud infrastructure - GCP preferred, but AWS or Azure experience translates well. Bonus points for experience with Kubernetes, Terraform, or CI/CD pipelines. Frontend experience with React and TypeScript (strongly preferred). Familiarity with MUI, Tailwind, or component-driven UI development is a plus. Comfortable with observability tools (logging, metrics, alerting) - we use Datadog, but experience with similar platforms counts. Experience at a growth-stage startup where you've had to balance speed with quality. You start with the WHY, and aren’t afraid of asking questions out of curiosity. Fintech, benefits, or HR tech experience is a plus - especially if you've worked with financial transactions, compliance requirements, or third-party integrations (e.g., Stripe, Plaid). Benefits and Perks Remote-first working environment Medical, dental and vision insurance plans Employee wellness program One-time home office stipend 401(k) savings plan Flexible PTO policy 12 weeks Parental Leave + 4 additional weeks for the Birthing Parent At Solstice Analytics, we value diversity, and always treat all employees and job applicants based on merit, qualifications, competence, and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Duties and responsibilities may not all be covered in the description, or may change o