Senior Backend Engineer (.NET) - LastPass

About LastPass

LastPass delivers Secure Access Essentials, helping individuals and organizations manage and protect access to AI, applications, and credentials straight from the browser. Trusted by more than 100,000 businesses and millions of users worldwide, LastPass blends strong security with everyday simplicity.

LastPass is looking for a Senior Backend Engineer (.NET) to evolve the commerce and payment platforms powering LastPass subscriptions. In this role, you will modernize services and deliver reliable payment integrations.

About the Team

The Commerce engineering team sits at the heart of LastPass’s global commerce infrastructure. The team architects, scales, and maintains the backend platforms that drive e-commerce, billing, and payment processing primarily in .NET.

What You Will Do

• Design and implement scalable .NET services and REST APIs that power commerce and payment capabilities
• Deliver payment gateway integrations and regional payment method support, expanding reach and reliability for subscribers
• Contribute to planning, design, and feature delivery in close collaboration with a cross-functional engineering team
• Advocate for non-functional requirements and cost-effective solutions, developing, testing, and maintaining services within your domain
• Collaborate across teams, engage in technical decision-making, and help influence the platform’s architectural direction
• Coach and mentor engineers at various levels, raising the bar for engineering quality and team capability
• Shape customer-facing applications with new features that meet evolving user needs and business objectives

What It Takes

• Proven experience in C# and .NET Core for web application development
• Proven experience in REST API design, creation, and consumption
• Proven experience with relational databases and Entity Framework Core
• Solid grounding in OOP best practices, containerisation with Docker, and web security principles
• Proven experience designing and operating microservice architectures
• Clear and confident communication skills, able to engage technical and non-technical stakeholders
• Team-first mindset with creative problem-solving and consistent follow-through

Nice-to-Have Skills

• Ability to create architecture, explain it, and create ADR/RFC documentation
• Experience with commerce systems and various payment providers
• Knowledge of Zuora development
• Experience with AWS, including Secrets Manager, and background services
• Foundational knowledge of Angular

Why LastPass?

• High-growth, collaborative environment with inclusive teams
• Remote-first culture
• Competitive compensation
• Flexible Paid Time Off policies, including Quarterly Self-Care Days and Volunteer Days
• Parental leave and comprehensive health coverage
• Home office setup and remote work support
• LastPass Families free account for up to 5 members
• Continuous learning and development opportunities with an annual learning stipend
• Employee Assistance Program and peer-to-peer recognition