Senior .Net Developer

Improvix Technologies | Federal Program | Washington, DC

Compensation: $170,000 - $190,000

Location: Washington, DC - hybrid, 3 days onsite / 2 days remote

Clearance: Active Secret clearance required.

Employment Type: Full-Time

SOMEONE HAS TO DECIDE WHAT BECOMES A POWER APP AND WHAT DOESN'T

Every long-running Microsoft shop accumulates the same portfolio: SharePoint workflows from two platform versions ago, a handful of Power Apps somebody built over a weekend that are now quietly load-bearing, and a few .NET Framework applications nobody has had the budget to move. Each one works. Together they're a maintenance surface nobody owns, and every new request kicks off the same argument about where the thing should live.

Improvix Technologies is hiring a Senior .NET Developer to be the person who settles that argument. You'll own architecture and tooling decisions across a portfolio of Microsoft and modern web applications on a high-visibility federal program - defining the patterns, setting the standards, running the modernization roadmap, and making the call on when low-code is genuinely the right answer and when it's a trap with a short time-to-demo.

New work here is built on ASP.NET Core and a currently supported .NET release. The Framework applications in the portfolio are migration candidates with a roadmap, not a permanent tax - and shaping that roadmap is part of the job. Three days a week onsite in DC, two remote.

WHY SENIOR ENGINEERS TAKE THIS ROLE

• Modern .NET is the destination, not the pitch. ASP.NET Core on a current .NET release is what new work gets built on, not an aspiration in a slide deck. You won't spend your tenure maintaining WebForms and calling it modernization.
• You set the standards rather than inherit them. Patterns, coding standards, review process, technology selection. You're not applying someone else's architecture decisions - you're making them, and you'll be expected to defend them.
• The build-versus-buy call is actually yours. Power Apps or custom build, Dataverse or SQL, migrate or leave it alone for now. You make the recommendation, you own the outcome, and nobody overrules it from a slide.
• Modernization with a real mandate. Moving legacy SharePoint-backed systems and older .NET applications forward is funded, scheduled work on this program - not a someday item that loses to the next feature request.
• You stay in the code. Prototyping, unblocking, and critical-path code are in the job description because they're in the job. Architectural judgment that stops being refreshed by building goes stale fast.

WHAT YOU'LL OWN

Architecture & Technical Direction

• Own the technical architecture for full stack applications built on ASP.NET Core and modern web frameworks - defining the patterns, standards, and practices the team builds against.
• Evaluate, select, and recommend tools, frameworks, libraries, and platforms, weighing scalability, maintainability, security, and total cost of ownership - and articulate the reasoning, including to people who will disagree with it.
• Lead technical design reviews and make the architectural calls that keep a mixed portfolio coherent instead of merely functional.
• Define and maintain the modernization roadmap: migrating legacy SharePoint-backed systems to modern architectures, and planning the path for .NET Framework applications onto supported .NET releases.
• Identify and remediate technical debt, performance bottlenecks, and security risks across the portfolio - ideally before they become incidents.

Hands-On Development

• Prototype solutions, unblock developers, and contribute code on critical-path items.
• Build and maintain data access with MS SQL and Entity Framework Core, including schema design for enterprise applications.
• Set the reference implementations - the service, the API, the test project that everyone else copies - so the standards exist in code and not only in a document.

Microsoft Platform Strategy

• Provide architectural oversight for Power Platform solutions - guiding when Power Apps (canvas and model-driven), Power Automate, and Dataverse are the right fit, and when custom development is the honest answer.
• Establish data architecture and governance patterns for Dataverse: table design, relationships, business rules, and security role models.
• Lead SharePoint modernization across SharePoint Online and legacy SharePoint (2013 or newer).
• Keep the low-code estate governed so it stays an asset rather than turning into shadow IT with a Microsoft logo on it.

Integration & API Strategy

• Guide API strategy and integration architecture - RESTful service design, authentication patterns, and service-oriented design.
• Architect integrations across Microsoft 365, SharePoint, Teams, and external systems.
• Define identity and access patterns against Active Directory and enterprise identity services.

Engineering Practice & Quality

• Establish coding standards and own the code review process, so quality is consistent across the team rather than dependent on who happened to write it.
• Improve CI/CD pipelines, branching strategy, and release management to support frequent, reliable deployments - GitHub Actions, Azure DevOps, or similar.
• Build application security into the design rather than into a remediation ticket filed after the scan.
• Support deployment activities, including the occasional weekend release window.

Team Leadership

• Mentor mid-level and junior developers through knowledge transfer sessions, pairing, and review that teaches rather than just approves.
• Partner with program leadership, government stakeholders, and technical leads to translate mission requirements into achievable technical solutions.
• Present technical recommendations to engineering teams and non-technical stakeholders, and leave both audiences understanding the tradeoff.

WHAT YOU BRING

These are the requirements - everything in "Bonus Points" below is genuinely optional. If you meet this list, apply.

• 5+ years of progressive C# and .NET development experience, including time setting technical direction for other developers.
• Recent, hands-on ASP.NET Core work on a currently supported .NET release - .NET 8 or later, with .NET 10 the current LTS. This is the stack we're hiring for, and it's the part of your résumé we'll read closest.
• Demonstrated ownership of architecture and technology selection decisions for enterprise applications - and the ability to explain the reasoning behind them.
• Strong command of full stack architecture, including modern frontend frameworks (React or similar), RESTful API design, and service-oriented patterns.
• Hands-on Microsoft Power Platform experience - Power Apps (canvas and/or model-driven), Power Automate, and Power BI - with the judgment to know when low-code is and isn't the right answer.
• Experience leading SharePoint modernization or migration, with familiarity across SharePoint Online and legacy SharePoint (2013 or newer).
• Deep experience with MS SQL, Entity Framework or EF Core, and database design for enterprise applications.
• Proven experience establishing or maturing CI/CD pipelines and DevOps practices (GitHub Actions, Azure DevOps, or similar).
• Experience running code reviews, setting coding standards, and mentoring development teams.
• Strong understanding of application security concepts, Active Directory, and identity and access patterns in enterprise environments.
• Working familiarity with Microsoft 365 - SharePoint Online, Teams, Outlook, Excel, Word, and OneDrive - in a collaborative enterprise environment.
• Excellent communication skills, able to present a technical recommendation to an engineering team and a non-technical stakeholder in the same meeting.
• U.S. citizenship and an active Secret clearance.
• Ability to work onsite in Washington, DC three days per week, including occasional Saturday hours for deployment activities.

BONUS POINTS

• Experience migrating .NET Framework applications to modern .NET - including the parts that don't port cleanly and the judgment to know what should be rewritten instead.
• Working familiarity with .NET Framework and older ASP.NET (MVC or Web Forms) for supporting the legacy portfolio.
• Architecting solutions in Azure, including deployments in a federal or FedRAMP context.
• Minimal APIs, dependency injection patterns, or modern ASP.NET Core middleware and configuration practice.
• Dataverse for Teams, and Power Apps embedded in Microsoft Teams.
• TypeScript across the frontend, Node.js development, or both.
• Containerization and orchestration - Docker, Kubernetes, or similar.
• Integrating AI or LLM capabilities into applications, or AI-assisted tooling into team workflows.
• Working knowledge of Section 508 accessibility standards.
• Prior experience supporting federal programs and working inside government security and compliance frameworks.
• Microsoft certifications - Azure Solutions Architect, Power Platform Solution Architect, or equivalent.

WORKING HERE

Improvix Technologies delivers secure, modern, integrated technology solutions that keep the nation's most critical systems running. We're small enough that a good idea reaches a decision-maker in a day, and close enough to the mission that you'll know exactly what your work supports.

On Core versus Framework: there are .NET Framework applications in this portfolio and you will touch them - we're not going to pretend otherwise. But we're hiring for where the portfolio is going, not where it's been. New development targets ASP.NET Core on a supported release. If your last several years have been Framework and Web Forms, you're still welcome to apply, but come ready to talk about how you'd plan the move - because that conversation will happen in the interview and then again most quarters after you start.

A straight answer on schedule: three days onsite in Washington, DC and two remote, plus occasional Saturday hours when a deployment window requires them. The weekend time is genuinely occasional and tied to releases, not a standing expectation - but it is real, and we'd rather you hear it now than in week three.

What "senior" means here: you'll set direction and you'll still write code. We're small enough that an architect who only reviews other people's work isn't a role we can justify, and honest enough to say the balance shifts week to week. Some weeks are design reviews and roadmap. Some weeks you're in the repo at 6pm because the critical path runs through you.

On the low-code question: we use Power Platform and we'll keep using it. The job isn't to purge it - it's to govern it, so the quick win somebody shipped last year doesn't become next year's outage with no owner. If your honest position is that all low-code is a mistake, you'll spend this job frustrated.

Ready to apply? Send us your résumé. If there's an application you moved onto modern .NET without breaking it, a standard you set that outlasted you, or a low-code solution you talked someone out of (or into), tell us about it - that's the conversation we want to have.

Why Improvix

At Improvix Technologies, we don't just deliver IT solutions - we deliver mission success. Our teams support critical government programs by building secure, innovative, and scalable technology that enables agencies to operate more efficiently and securely.

We believe great technology starts with great people. That's why we invest in our employees' growth, well-being, and long-term success. Our benefits include:
• Comprehensive medical, dental, and vision insurance
• 401(k) with company match
• Three weeks of paid annual leave that increases with tenure
• Life insurance and disability coverage
• Transit and commuting benefits
• Professional development and paid training opportunities
• Performance-based incentives

At Improvix, you'll join a collaborative, mission-focused environment where your expertise drives meaningful impact.

Pay Range Statement

The compensation range above reflects the minimum and maximum base salary Improvix in good faith expects to pay for this position at the time of posting. The final offer will depend on factors such as job-related skills, experience, certifications, clearance level and contract requirements. Improvix does not ask for or consider an applicant's salary history.

Equal Opportunity Employer

Improvix Technologies, Inc. is an Equal Opportunity Employer and is committed to building a diverse and inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status, or any other characteristic protected by federal, state, or local law.

Improvix is committed to providing reasonable accommodations to qualified individuals with disabilities during the application and employment process. If you require assistance or accommodation, please contact our Human Resources team.

Security Clearance / Citizenship Requirements

Due to the nature of our government contracts, U.S. citizenship may be required for certain positions, and some roles may require the ability to obtain and maintain a U.S. government security clearance.

Pay Transparency Statement

Improvix Technologies will not discharge or otherwise discriminate against employees or applicants for discussing, disclosing, or inquiring about their own compensation or the compensation of others.