.NET Developer (Hybrid)

Tetra Tech; Washington (District of Columbia); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Life insurance

STD

LTD

11 federal holidays

PTO

401(k) match

Flexible Spending Accounts

Tuition Assistance

Charitable Contribution matching

Job summary

Halvik Corp is seeking a talented .NET Core Backend Developer to design, implement, and optimize backend services in the Azure cloud. You will build RESTful APIs, ensure performance, security, and reliability for mission‑critical applications.

You will collaborate with IT and project teams, participate in architecture discussions, set up environments, and document designs. The role requires 2–5+ years of .NET experience and a strong focus on scalable, maintainable code.

Qualifications

• 2–5+ years of senior .NET development experience.
• Experience with .NET Core to build scalable web apps.
• Azure cloud environment knowledge.
• Ability to design, test, and configure RESTful services.
• Secure coding practices and maintainable design.

Responsibilities

• Develop Web Applications using .NET Core technologies.
• Participate in architectural discussions with IT and project teams.
• Set up development, staging, production, and COOP environments.
• Maintain front-end and back-end applications and services.
• Integrate third-party modules and develop custom modules.
• Manage code versioning and deployments per policy.
• Implement security recommendations and address findings.
• Create and maintain design and technical documentation.
• Conduct unit, system, integration, and performance testing.
• Assist with UAT and track defects to resolution.
• Report progress and schedule status to project stakeholders.
• Iterate on deliverables throughout the agile process.

Skills

.NET Core Backend Development

REST APIs

Azure

Backend Architecture

Security

Education

Bachelor's Degree in Computer Science

Job description

Halvik Corp delivers a wide range of services to 13 executive agencies and 15 independent agencies. Halvik is a highly successful WOB business with more than 50 prime contracts and 500+ professionals delivering Digital Services, Advanced Analytics, Artificial Intelligence/Machine Learning, Cyber Security and Cutting-Edge Technology across the US Government. Be a part of something special!

Position Overview

The contractor shall serve as the primary .NET Core Backend Developer, responsible for designing, developing, testing, and configuring applications within the Azure cloud environment. This role focuses exclusively on modern .NET Core technologies to build and optimize scalable backend systems and RESTful APIs that support enterprise‑grade solutions. The developer will implement cloud‑ready architectures, apply clean coding practices, ensure high‑performance service design, and deliver secure, maintainable, and resilient backend components for mission‑critical applications.

Core Responsibilities

• Develop Web Applications: Using .NET Aspire technologies to build robust and scalable web applications
• Participate in Architectural Discussions: Working with the GPO IT and project teams to develop application architecture and ensure solutions are designed for successful deployment
• Environment Setup: Standing up all environments, including development, staging/test, production, and COOP
• Maintain Applications: Developing and maintaining front-end and back-end applications and services
• Implement Modules: Integrating third-party modules and developing custom modules according to GPO's needs
• Manage Code Versioning and Deployments: Following GPO's configuration management policies for code versioning and deployments
• Security Implementation: Making code or system changes to address GPO security recommendations
• Documentation: Creating and maintaining detailed technical support, high-level design, and detailed design documents
• Testing: Conducting multiple levels of testing, including unit, system, integration, performance, and load testing
• User Acceptance Testing (UAT): Assisting with UAT, recording, and implementing changes resulting from UAT
• Defect Management: Participating in defect management discussion with the project management team to ensure defects are tracked and remedied
• Progress Reporting: Communicating progress and/or schedule delays to GPO with efficiency and accuracy
• Iterative Updates: Making iterative updates to deliverables as needed throughout the agile process

Minimum Requirements

• Education: Bachelor's Degree in Computer Science recommended, but not required
• Experience: 2-5+ years recent experience as a senior .Net Developer
• Technical Proficiency: .NET to build robust and scalable web applications
• Compliance: N/A

Preferred Expertise

• Demonstrated success in Federal Contracting recommended.
• Strong analytical and problem-solving capabilities.

Privacy Policy – Halvik Corp

Halvik offers a competitive full benefits package including:

• Company-supported medical, dental, vision, life, STD, and LTD insurance
• Benefits include 11 federal holidays and PTO
• Eligible employees may receive performance-based incentives in recognition of individual and/or team achievements.
• 401(k) with company matching
• Flexible Spending Accounts for commuter, medical, and dependent care expenses
• Tuition Assistance
• Charitable Contribution matching

Halvik Corp is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.

Halvik'spay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.