Senior .NET Engineer

Excella-posted 13 days ago

Full-time • Mid Level

Remote • Arlington, VA

101-250 employees

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Excella is a transformative technology firm that helps organizations unlock new possibilities. We believe the key to helping clients challenge the status quo and reach new heights lies in our talented people. That’s why we’re committed to developing talent and providing opportunities for career growth at every stage. Join our collaborative team dedicated to solving complex problems with sustainable solutions while building your future as a leader. At Excella, you’re empowered to make lasting impact, turning today’s challenges into tomorrow’s mission successes. Workplace locations look different for everyone. Excellians are a distributed workforce and whether you're working from your home office or a client site, we support a flexible work/life integration regardless of your location. Senior Consultant .NET Engineer Excella is a leading provider of Agile software development and data and analytics solutions to clients in the federal, commercial and non-profit sectors. We believe that great work leads to great things –- our experts measure success by the positive impact we make on our clients, community, and colleagues. We are growing fast and need passionate, innovative people who love working with technology and are ready to make an impact. Here's what you can expect from us: Workplace sites look different for everyone – whether it’s your home or the office, we believe in a flexible work/life balance that supports you regardless of your location. We offer a home office allowance that can be used for home office furniture/equipment, a daily pass for a coworking space, etc. Our commute reimbursement plan has you covered for whether you bike, Metro, or drive to work. As a Senior Consultant at Excella, you will develop high-quality software solutions, using modern .NET technologies, while collaborating closely with our commercial and government clients and project team members. You'll apply your technical expertise to solve complex business challenges and contribute to the growth of our .NET practice. Your skills in full-stack development, combined with your knowledge of agile methodologies, will be essential in delivering impactful solutions that meet client needs.

Design and implement scalable, high-performance applications using modern .NET technologies and frameworks
Collaborate with clients and team members to translate business requirements into technical solutions
Develop robust RESTful APIs and web applications using ASP.NET Core
Create responsive and interactive user interfaces using modern JavaScript frameworks
Apply software engineering best practices including SOLID principles, design patterns, and automated testing
Conduct thorough code reviews and provide constructive feedback to maintain code quality
Mentor junior team members and share knowledge across the organization
Stay current with emerging technologies in the .NET ecosystem and contribute to technical discussions
Participate actively in agile ceremonies and contribute to continuous improvement initiatives
Advocate for quality engineering practices and modern development approaches

3+ years of experience in .NET development with a strong technical foundation
Expertise in C# and ASP.NET Core for building web applications and APIs
Experience with modern frontend technologies such as React, Angular, or Vue.js
Strong knowledge of database technologies including SQL Server, Entity Framework Core, and other ORMs
Proficiency in writing clean, testable code using test-driven development techniques
Experience with automated testing tools such as xUnit, NUnit, Moq, or equivalent
Knowledge of cloud platforms (Azure, AWS) and containerization technologies (Docker)
Strong understanding of API design principles and implementation best practices
Proficiency in Git-based workflows and software development lifecycle management
Experience working in agile environments and following agile methodologies
Excellent communication skills with the ability to explain complex technical concepts clearly
Problem-solving mindset with strong analytical and critical thinking abilities

Experience with microservices architecture and distributed systems
Knowledge of CI/CD pipelines using Azure DevOps, GitHub Actions, or similar tools
Familiarity with .NET performance optimization and debugging techniques
Experience with serverless computing and event-driven architectures
Understanding of Web Content Accessibility Guidelines (WCAG) and implementing accessible applications
Experience with observability tools and practices for monitoring and logging
Familiarity using GenAI productivity tools such as ChatGPT, Claude, and GitHub Copilot
Understanding of trunk-based development practices and feature flags
Experience with message brokers and asynchronous processing technologies
Knowledge of DevSecOps principles and application security best practices

We offer top of industry medical, dental, and vision benefits with multiple options to choose from such as an employer-contributed health savings account, infertility coverage, and orthodontia so you can select the plan that works best for you.
We provide 8 weeks of Parental Leave, discounted pet insurance, and a Care.com membership with 3 back-up emergency child or elder care days annually – all available to you on your first day.
Starting day one, every employee is bonus eligible and receives 15 days of paid vacation, 6 federal holidays, and 4 floating holidays.
Excella’s TechEleX program provides you with multiple options to suit your technology needs. Choose between a variety of Mac or PC devices, and to ensure your hardware remains current, at the end of a 3-year period Excella will replace your existing computer with a new model from the program. Plus, we’ll even give you the original device to keep for your personal use!
With Excella’s Annual Internet Reimbursement benefit, all employees receive an additional $25 per month to help offset the cost of internet access. This initiative reflects our commitment to supporting you in staying connected and productive, no matter where you work.
We'll invest in your career by providing 3 days of paid professional development every year, including an allowance for registration fees to attend classes, conferences, or obtain professional certifications.
We encourage mindfulness and overall well-being through employee wellness events, a HeadSpace membership, as well as access to TalkSpace and mental health coverage through our medical plans.
We offer a home office allowance that can be used for home office furniture/equipment, a daily pass for a coworking space, etc. Our commute reimbursement plan has you covered for whether you bike, Metro, or drive to work.
We have a "bring your own device" workplace and will share the cost of a new computer of your choice -- Mac or PC.

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