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Senior Backend Net Developer Jobs in Virginia (NOW HIRING)

Twenty

Senior Backend Software Engineer

Arlington, VA · On-site

The Senior Backend Software Engineer will build backend systems that support cyber capabilities, working on high-performance APIs and complex data modeling to improve operational effectiveness.

campus4tech

Backend Java Engineer

Vienna, VA · On-site

$50.75 - $65.75/hr

Java + Spring / Spring Boot Azure DevOps Microservices Description: We are seeking a mid-to-senior Back-End Java Engineer to design, develop, test, integrate, and maintain back-end services and ...

Maxar

Senior Backend Developer, Data Platform

Reston, VA · Hybrid

$137K - $182K/yr

Minimum Qualifications: * 10+ years of professional software engineering experience, with strong backend development skills * Strong proficiencyinPython * Experience building backend systems, APIs ...

C-MCI

Java Backend Developer - Senior

Ashburn, VA · On-site

$123K - $160K/yr

JAVA Backend Developer (Senior) Location: Ashburn VA Why CMCI? CMCI provides management consulting and IT services that empower enterprises to achieve their business goals in today's highly ...

SAIC

Java Backend Developer Senior

Ashburn, VA · On-site

$123K - $160K/yr

SAIC is currently seeking a motivated, career and customer-oriented Backend Developer (Senior) to join our team to begin an exciting and challenging career in Ashburn, VA. This role involves ...

EDR Technology

Be Seen First

Sr Java Backend Developer with Angular

Ashburn, VA · On-site

$135K - $165K/yr

Backend Developer (Senior) with Angular Ashburn, VA (2 days a week in the office) MUST BE A US CITIZEN Position Summary We are currently seeking a motivated, career and customer-oriented Backend ...

SAIC

Java Backend Developer Senior

Ashburn, VA · On-site

$120K - $160K/yr

ORA_ON_SITE Description SAIC is currently seeking a motivated, career and customer-oriented Backend Developer (Senior) to join our team to begin an exciting and challenging career in Ashburn, VA.

SAIC

Java Backend Developer Senior

Ashburn, VA · On-site

$120K - $160K/yr

Description SAIC is currently seeking a motivated, career and customer-oriented Backend Developer (Senior) to join our team to begin an exciting and challenging career in Ashburn, VA. This position ...

SAIC

Java Backend Developer Senior

Ashburn, VA · Hybrid

$120K - $160K/yr

ORA_ON_SITE Description SAIC is currently seeking a motivated, career and customer-oriented Backend Developer (Senior) to join our team to begin an exciting and challenging career in Ashburn, VA.

Stem Xpert

Sr .net developer

Richmond, VA

$54 - $71.25/hr

POSITION : SR.NET DEVELOPER LOCATION : RICHMOND VA(Face To Face) DURATION : 12 MONTHS Messaging team would need a .net resource to work on multiple projects. This resource will be helping messaging ...

Omm IT Solutions

Sr. Backend Java Developer

Mclean, VA · On-site

$122K - $158K/yr

We are seeking an experienced Java Developer to design, develop, and support modern enterprise applications within a cloud-native environment. This role is ideal for someone who thrives in fast-paced ...

SmartIPlace

Senior Java Backend Developer

Mclean, VA · On-site

$121K - $158K/yr

Senior Java Backend Developer Location: McLean, VA Interview Type: In Person Interview Work Authorization: This requirement is open to sponsored candidates through sub-vendors - one layer deep. Must ...

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All JobsBackend Net Developer JobsSenior Backend Net Developer JobsSenior Backend Net Developer Jobs in Virginia

Senior Backend Net Developer information

What is the difference between Senior Backend Net Developer vs Backend Developer?

AspectSenior Backend Net DeveloperBackend Developer
Required CredentialsBachelor's in CS or related, experience with .NET, often certifications like MCSDBachelor's in CS or related, experience with .NET or similar frameworks
Work EnvironmentLarge enterprise, software firms, tech companiesStartups, small to medium businesses, tech teams
Employer & Industry UsageCommon in finance, healthcare, enterprise softwareUsed across various industries, including e-commerce and SaaS

Senior Backend Net Developers typically have more experience, advanced certifications, and handle complex systems, whereas Backend Developers focus on building and maintaining backend services. The senior role involves leadership and architecture responsibilities, while the junior role emphasizes implementation and coding.

What are the most commonly searched types of Backend Net Developer jobs in Virginia? The most popular types of Backend Net Developer jobs in Virginia are:
What cities in Virginia are hiring for Senior Backend Net Developer jobs? Cities in Virginia with the most Senior Backend Net Developer job openings:
Senior Backend Net Developer jobs near you

Senior Backend Engineer

Antithesis Operations LLC

Vienna, VA • On-site

$180K - $200K/yr

Full-time

Posted 11 days ago

Job description

About Antithesis
We make software that finds the bugs your engineers couldn't. Antithesis runs your entire system in a deterministic simulation, breaks it in every way imaginable, and hands you a root cause and a perfect reproduction - no flaky tests, no false positives, no "works on my machine." We've been quietly reinventing how the world thinks about software reliability, and we're just getting started.
The rise of AI-generated code has made what we do more important than ever. Agents can write code faster than any human - but faster code isn't better code if it's buggy, stuck in review, or slipping through the cracks undetected. The verification bottleneck is real, it's growing, and it's exactly the problem we exist to solve.
We're well-funded, deeply technical, and building something genuinely hard. If that sounds like fun to you, keep reading.
About the Role
The Platform team is the engine room of Antithesis - we own the infrastructure, services, and tools that are at the core of the product. As a Senior Backend Engineer here, you won't be maintaining someone else's abstractions. You'll be designing them from scratch, owning them end-to-end, across the full stack: from raw binary formats and block compaction all the way up to the external APIs our customers depend on. Correctness and performance aren't nice-to-haves here - they're the job.
If you get unreasonably excited about systems design, performance, storage efficiency, clean API contracts, and finding the bottleneck nobody else noticed, we'd love to talk.
What You'll Do
  • Design, build, and operate core platform systems - including backend infrastructure, data processing pipelines, storage layers, and the scalable APIs, integrations, and interfaces that power internal and external consumers.
  • Contribute to Pangolin, our purpose-built database designed from the ground up to meet the unique demands of our platform.
  • Build and evolve foundational platform primitives such as data access layers, authorization frameworks, and service orchestration.
  • Own reliability end-to-end - from system design and capacity planning to incident response, with a sustainable on-call rotation shared across the team.
  • Identify and resolve performance bottlenecks across the stack; mentor engineers; contribute to long-term technical strategy.

What We're Looking For
  • 5+ years of software engineering experience. Rust is a strong preference, but exceptional systems engineers from other backgrounds are welcome.
  • Experience building APIs, services, storage engines, query engines, or data-intensive backend systems.
  • Deep understanding of distributed systems: consistency, fault tolerance, replication, observability.
  • Hands-on experience designing and shipping APIs with attention to correctness and contract stability.
  • Strong fundamentals - you care about correctness, test coverage, and well-designed abstractions.
  • Bonus: query planning/optimization experience, multi-tenant platform or authz background, C/C++ familiarity, or open-source contributions.

About Our Team
Our team has backgrounds spanning CS degrees, philosophy, mathematics, and everything in between - or nothing formal at all. What everyone shares is a high bar for engineering quality, regardless of title. We work in-person because it's how we build trust and tackle hard problems together.
Location: This position is in office in Vienna, VA.

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