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Senior Backend Engineer (.NET)

LastPass

Before you apply

Role details

The practical picture
Work arrangement
Fully remote
Employment
Full-time

Work & location

Remote policy
Remote-first culture

Experience & eligibility

Skills
  • C#
  • .NET Core
  • REST API Design
  • Entity Framework Core
  • Microservices
  • Docker
  • OOP
  • Web Security

Compensation & benefits

Benefits
LastPass Families free account for up to 5 members

Inside the role

Seniority
Senior
Role signal brief

The role, at a glance

Extracted from the source posting · 95% confidence

LastPass is seeking a Senior Backend Engineer to modernize commerce and payment platforms using .NET. The role involves designing scalable services, integrating payment gateways, and mentoring engineers within a remote-first IT department.

Remote scope
Portugal

What you need

  • 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

What you will own

  • Design and implement scalable .NET services and REST APIs that power commerce and payment capabilities
  • Deliver payment gateway integrations and regional payment method support
  • 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
  • Collaborate across teams, engage in technical decision-making, and help influence the platform’s architectural direction
  • Coach and mentor engineers at various levels
Core skills
C#.NET CoreREST API DesignEntity Framework CoreMicroservicesDockerOOPWeb Security

Remote policyRemote-first culture

Internal freshness window ends Oct 19, 2026
View source evidence
  • location “Remote - Portugal”
  • applicant_location_requirements “Remote - Portugal”
  • workplace_type “Remote-first culture”
  • company_remote_policy “Remote-first culture”
  • department “Department: IT”
  • benefits “LastPass Families free account for up to 5 members”
  • travel_requirements “LastPass subscriptions running reliably for customers worldwide”
  • skills “Proven experience in C# and .NET Core for web application development”
  • skills “Proven experience in REST API design, creation, and consumption”
  • skills “Proven experience with relational databases and Entity Framework Core”
  • skills “Proven experience designing and operating microservice architectures”
  • seniority “Senior Backend Engineer”
c#.net corerest api designentity framework core
Role brief

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. From discovering unapproved AI and applications to reducing login friction and securing credentials across the business, LastPass delivers on its mission to give everyone seamless access to everything they need to work, move fast, and stay protected as their environments evolve.

Curious about our products? Visit our website and try it free! 

We welcome new ideas, support your growth, and recognize your value, if this aligns with what you are looking for in your next career move, Join Us!

LastPass is looking for Senior Backend Engineer (.NET): 

In this role, you will evolve the commerce and payment platforms powering LastPass subscriptions. At this career level, you will modernize services and deliver reliable payment integrations — helping LastPass deliver on its mission to give everyone seamless access to everything they need to work, move fast, and stay protected.

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. Working primarily in .NET, the team owns the critical systems that keep LastPass subscriptions running reliably for customers worldwide.

If you are passionate about complex problem solving and motivated by scale, then this is the role for you!

Who will you work with?

You will work closely with fellow .NET engineers, SDETs, QA engineers, database developers, and engineering leaders to design, build, test, and support reliable commerce and payment services. You will also partner with teams across Product, Finance, Data, and Operations to deliver secure and seamless payment experiences for LastPass customers globally.

What are some of the exciting challenges you will be working on?

  • Design and implement scalable .NET services and REST APIs that power commerce and payment capabilities for LastPass customers worldwide
  • Deliver payment gateway integrations and regional payment method support, expanding reach and reliability for LastPass 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
  • Contribute to a customer-facing application, shaping it with new features that meet evolving user needs and business objectives

What does it take to work at LastPass?

  • 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
  • Recognised internally as a clear and confident communicator, able to engage technical and non-technical stakeholders with equal ease
  • Approaches complex challenges with a team-first mindset, bringing creative problem-solving and consistent follow-through

It's great, but not required:

  • 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 (or another cloud provider), and background services
  • Foundational knowledge of Angular

Why LastPass?

  • The leader in secure access
  • High-growth, collaborative environment with inclusive teams
  • Remote-first culture
  • Competitive compensation
  • Flexible Paid Time Off policies, including but not limited to: Quarterly Self-Care Days (4 extra paid days off annually) and Volunteer Days
  • Parental leave
  • Comprehensive health coverage, including dependents
  • Home office setup support
  • LastPass Families free account for up to 5 members
  • Continuous learning and development opportunities, including an annual learning stipend to invest in your growth
  • Peer-to-peer recognition through Quantum Workplace
  • Employee Assistance Program for well-being support
  • Remote work stipend to support your home office needs
  • Short-Term or Remote-Centric Work Arrangements for added flexibility

Unlock your potential with us - your skills, experience, and unique perspective matter more than just checking the boxes. Apply today, and let's build the future together!

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