Senior Software Engineer

Milliman

Senior Software Engineer developing and maintaining production web applications at Milliman. Collaborating with product managers, designers, and fellow engineers to deliver high-quality software solutions.

Posted 6/19/2026full-timeRemote • Wisconsin • 🇺🇸 United StatesSenior💰 $93,700 - $177,675 per yearWebsite

Tech Stack

Tools & technologies

Distributed SystemsEntity Framework.NETReactSQLSvelteTypeScriptVue.js

About the role

Key responsibilities & impact

Design, build, debug, release, and maintain production web applications and distributed systems.
Work primarily on back-end systems using our core stack, while contributing to front-end features when needed.
Collaborate with product managers, designers, and other engineers to shape requirements and deliver useful, high-quality software.
Write clean, maintainable code and contribute to a healthy engineering culture through code reviews, testing, and thoughtful technical discussions.
Help improve software quality through automated tests, monitoring, and attention to reliability in production.
When reviewing user stories and project requirements, seek out additional detail to fill gaps or clarify for the team.
Contribute to API design and system integrations, including REST-based services and related application workflows.
Support and mentor other engineers through collaboration, pairing, code review, and knowledge sharing.
Use modern developer tooling effectively, including AI coding agents and related workflows, with good judgment and a practical mindset.
Stay current on relevant tools, practices, and technologies, and apply them when they make the product or team better.

Requirements

What you’ll need

7+ years of experience designing, building, and releasing web applications in production environments.
5+ years of back-end development experience with .NET and C#.
3+ years of experience implementing and integrating REST APIs.
3+ years of experience working with SQL Server or another relational database.
2+ years of experience using ORM frameworks such as Entity Framework Core.
2+ years of front-end development experience with a modern framework such as Svelte, React, or Vue, ideally with TypeScript.
Experience working in agile software development environments such as Scrum or Kanban.

Benefits

Comp & perks

Medical, Dental and Vision – Coverage for employees, dependents, and domestic partners.
Employee Assistance Program (EAP) – Confidential support for personal and work-related challenges.
401(k) Plan – Includes a company matching program and profit-sharing contributions.
Discretionary Bonus Program – Recognizing employee contributions.
Flexible Spending Accounts (FSA) – Pre-tax savings for dependent care, transportation, and eligible medical expenses.
Paid Time Off (PTO) – Begins accruing on the first day of work. Full-time employees accrue 15 days per year, and employees working less than full-time accrue PTO on a prorated basis.
Holidays – A minimum of 10 paid holidays per year.
Family Building Benefits – Includes adoption and fertility assistance.
Paid Parental Leave – 11 weeks of paid leave for employees who meet eligibility criteria.
Life Insurance & AD&D – 100% of premiums covered by Milliman.
Short-Term and Long-Term Disability – Fully paid by Milliman.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

.NETC#REST APIsSQL ServerEntity Framework CoreSvelteReactVueTypeScriptagile software development

Soft Skills

collaborationmentoringcode reviewcommunicationproblem-solvingattention to detailtechnical discussionsreliability focusengineering cultureknowledge sharing