Slalom Flex (Project Based)- Sr. .NET Web App Developer

Slalom; Seattle (WA); Hybrid; USD 103,320 - 130,872; Full time

Benefits offered by this job

401(k) with match

Health, dental & vision coverage

Adoption and fertility assistance

Short/long-term disability

$350 yearly well-being reimbursement

Job summary

Slalom is seeking a Senior .NET Cloud/Web Developer to support the redesign of a client website. This role is part of an Agile team, primarily focusing on backend development using .NET and Blazor. Candidates should have strong .NET expertise and experience in full-stack applications. The position offers a hybrid work model with a salary range of $75 to $95 per hour, alongside diverse benefits like health coverage and paid holidays.

Qualifications

• Senior-level experience as a .NET Web or Cloud Developer delivering production-grade applications.
• Expert-level fluency in modern .NET (v8+), C#, and web application development.
• Hands-on experience troubleshooting full-stack web applications.

Responsibilities

• Design, develop, and maintain clean, scalable backend code.
• Troubleshoot and resolve complex web application issues.
• Communicate technical progress and risks clearly.

Skills

.NET expertise

C#

Agile environment experience

Communication skills

Debugging skills

Tools

Sitecore JSS (Headless)

Azure

Job description

Duration: 8+ months

Start Date: ASAP

About Us

Slalom is a purpose-led, global business and technology consulting company. From strategy to implementation, our approach is fiercely human. In six+ countries and 43+ markets, we deeply understand our customers—and their customers—to deliver practical, end-to-end solutions that drive meaningful impact. Backed by close partnerships with over 400 leading technology providers, our 10,000+ strong team helps people and organizations dream bigger, move faster, and build better tomorrows for all. We’re honored to be consistently recognized as a great place to work, including being one of Fortune’s 100 Best Companies to Work For seven years running. Learn more at slalom.com.

Overview

Slalom is seeking an experienced Senior .NET Cloud/Web Developer to support the redesign and modernization of a client website. This is a contract engagement supporting a highly collaborative Agile team working within a modern Microsoft web and cloud ecosystem.

The ideal candidate is a strong backend-focused developer with deep .NET expertise, comfort working across the full stack when needed, and professional maturity to collaborate effectively with both technical and non-technical stakeholders.

Role Summary

You will join a 5-person Agile delivery team, contributing primarily to backend development in a modern .NET and Blazor environment. The team follows a platform-first philosophy, emphasizing Azure-native services and out-of-the-box capabilities over custom-built solutions.

While the platform includes Sitecore JSS (Headless), this role does not require CMS specialization. A dedicated Sitecore SME is already embedded in the team; your responsibility will be to extend the existing framework and integrate it into broader web solutions.

Key Responsibilities

• Design, develop, and maintain clean, scalable backend code supporting the website redesign.
• Extend and enhance an existing Sitecore JSS (Headless) implementation in collaboration with a Sitecore specialist.
• Troubleshoot and resolve complex web application issues across the full stack, including CDN, identity, and third-party integrations.
• Participate actively in Agile ceremonies, including daily standups, backlog refinement, estimation, and story ownership.
• Collaborate closely with frontend developers, QA, and infrastructure resources to deliver high-quality solutions.
• Communicate technical progress, risks, and decisions clearly to both technical and non-technical stakeholders.
• Serve as a technical point of contact for stakeholders when leadership is unavailable.

Technical Environment

• Backend & Web: .NET (v8, 9, 10), C#, Blazor
• CMS: Sitecore JSS (Headless)
• Methodology: Agile, co-owned stories, collaborative backlog

Required Qualifications

• Senior-level experience as a .NET Web or Cloud Developer delivering production-grade applications.
• Expert-level fluency in modern .NET (v8+), C#, and web application development.
• Hands-on experience troubleshooting full-stack web applications, including identity, security, and CDN layers.
• Familiarity with headless CMS patterns (Sitecore JSS experience preferred, but not required).
• Strong debugging skills and a pragmatic, platform-first development mindset.
• Ability to write clean, maintainable, and well-structured code with minimal oversight.
• Excellent communication skills and the ability to translate technical concepts for non-technical audiences.

Preferred Attributes

• Experience working in Azure environments with a focus on low-code and managed services.
• Background working on high-visibility public websites or digital platforms.
• Comfortable operating with a high degree of autonomy and accountability.
• Quick learner who can ramp up efficiently within an active delivery team.

Work Model

• Hybrid: 2 days per week onsite in Kirkland, WA preferred
• Remote: Considered for strong candidates if local availability is limited

Compensation and Benefits

Slalom prides itself on helping team members thrive in their work and life. As a result, Slalom is proud to invest in benefits that include meaningful time off and paid holidays, 401(k) with a match, a range of choices for highly subsidized health, dental, & vision coverage, adoption and fertility assistance, and short/long-term disability. We also offer yearly $350 reimbursement account for any well-being-related expenses.

Slalom is committed to fair and equitable compensation practices. For this position, the base salary pay range is $75/hr to $95/hr. Actual compensation will depend upon an individual’s skills, experience, qualifications, location, and other relevant factors. The salary pay range is subject to change and may be modified at any time.

EEO and Accommodations

Slalom is an equal opportunity employer and is committed to inclusion, diversity, and equity in the workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veterans’ status, or any other characteristic protected by federal, state, or local laws. Slalom will also consider qualified applications with criminal histories, consistent with legal requirements.

Slalom welcomes and encourages applications from individuals with disabilities. Reasonable accommodations are available for candidates during all aspects of the selection process. Please advise the talent acquisition team if you require accommodations during the interview process.