Senior Software Engineer (.NET​/Angular

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Arlington, VA, US

2 days ago Requisition

Salary Range: $ To $ Annually

Own the hard parts.

Every platform has a few problems that everyone quietly hopes someone else will pick up. The saga that half-completes. The tenant boundary that leaks under one specific permission configuration. The schema version that three modules depend on and nobody wants to touch.

We are looking for the engineer who picks those up.

Pioneering Evolution has spent over 15 years building the software that federal acquisition and financial management actually runs on. Our name is not decorative — we exist to push boundaries, explore new possibilities, and catalyze change in a domain that does not hand out change easily. Our Pioneers are at the forefront of something new, taking risks and venturing into uncharted territory.

We are building a federated enterprise platform for complex federal mission environments, and we need senior engineers who can own complex components.

The architecture, honestly:

At Pioneering Evolution, we are building a Mission Operating System (Mission OS) called Sync Core™, designed to connect data, systems, workflows, and decisions across complex mission environments. Sync Core provides the secure, event-driven digital backbone for identity, integration, canonical data, governance, auditability, and interoperability—creating a trusted foundation on which mission capabilities can rapidly evolve. It is the foundation everything else stands on.

Built on Sync Core, SyncPoint™ is a modular application ecosystem composed of independently deployable modules that address specific operational needs, including requirements management, budgeting, task planning, resource allocation, execution, and decision support. Real programs. Real money. Real decisions.

We are not looking for a Senior Software Engineer simply to take the hardest tickets in the backlog. We are looking for an engineer who wants to help build the architecture, engineering culture, and technical foundation of a platform we expect to evolve for years.

You will take ownership of significant capabilities across Sync Core or SyncPoint—from architecture and domain modeling through APIs, event-driven workflows, data persistence, user experience, testing, deployment, and production performance. You will decide how services communicate, where boundaries belong, how data moves through the system, and how we build software that stays secure, observable, maintainable, and extensible as the platform grows.

You will also help raise the engineering capability of the people around you. That means thoughtful code reviews, mentoring junior and mid-level engineers, challenging architectural assumptions, establishing patterns where they are useful, and knowing when not to introduce complexity just because the technology makes it possible.

You may work on the Sync Core platform itself—identity, integration, eventing, canonical data, shared services, governance, auditability, and platform APIs—or lead the engineering of a SyncPoint mission module that turns complicated operational processes into intuitive software.

Either way, you will be close to the problem, close to the architecture, and close to the people making the decisions. No layers of bureaucracy separate you from the impact of what you build.

Current stack: C#, .NET 8+, ASP.NET Core, MediatR-based CQRS-lite command pipeline, PostgreSQL with Entity Framework Core, Cosmos DB for saga audit, RabbitMQ with Wolverine for messaging, Hangfire for scheduled work, YARP for gateway routing, Angular 19 and Type Script,…