Top 12 Mid senior .net developer Jobs in Columbia, Md

Application Developer Lead (.NET) - (Remote)
FEI Systems —Columbia, MD
- Full-time
- Remote
- System design
- AWS
- Bachelor's degree
Quick Apply
AWS Senior .NET Modernization Engineer
Aligned Technology Group —Baltimore, MD
- Full-time
- Remote
- 5 years
- SQL
- Mentoring
Quick Apply
11d
Tech Lead (Remote)
FEI Systems —Columbia, MD
- Full-time
- Remote
- System design
- AWS
- Bachelor's degree
Quick Apply
Senior Applications Developer
Peraton —Germantown, MD
- $135,000 - $216,000 a year
- Computer Science
- Master's degree
- High school diploma or GED
- Health savings account
- Paid holidays
Mid level C#.Net Engineer with AI and AWS
The Consortium, Inc. —Baltimore, MD
- Full-time
- Hybrid work
- Computer science
- Computer Science
- Mid-level
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Ground Software Engineer Senior
York Space Systems —Laurel, MD
- $120,000 - $190,000 a year
- Full-time
- Hybrid work
- Computer science
- 6 years
- Computer Science
- Health insurance
- Dental insurance
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Senior Frontend Software Engineer - Ground Software
York Space Systems —Laurel, MD
- $120,000 - $190,000 a year
- Full-time
- Hybrid work
- Computer science
- 6 years
- Computer Science
- Health insurance
- Dental insurance
Quick Apply
ARLIS Quantum Research Professional
University of Maryland —College Park, MD
- $80,000 - $252,289 a year
- Background check
- 18 years or older
- Computer Science
Computer Programmer II
CICONIX, LLC —Hyattsville, MD
- Full-time
- Background check
- Computer Science
- HIPAA
Quick Apply
CNO Analyst Programmers, Levels I/II (AE26041159)
Advantage Engineering & IT Solutions —Hanover, MD
- $161,000 - $209,000 a year
- Online Application
- Hybrid work
- Computer Science
- Windows
- Java
- Paid holidays
- Disability insurance
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Computer Programmer III
CICONIX, LLC —Hyattsville, MD
- Full-time
- Background check
- 7 years
- Computer Science
- Paid time off
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Senior Relationship Manager – New Markets Tax Credit Advisory
Baker Tilly Advisory Group, LP —Washington, DC
- Full-time
- Office
- 8 years
- Bachelor's degree
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Application Developer Lead (.NET) - (Remote)

FEI Systems -
Columbia, MD

Quick Apply

Job Details

Full-time

Qualifications

.NET Core
C#
Microcontroller programming
Version control systems
Angular
Serverless cloud services
DevOps automation
TypeScript

Full Job Description

At FEI Systems, we create innovative technology solutions to improve the delivery of health and human services because we know when cumbersome administrative processes stand in the way, those who need it most are often left without access to proper care and support. From comprehensive case management software to disaster recovery services and content management information systems used in delivering foreign aid, our solutions are improving the lives of millions of people. We’re looking for an application developer lead who shares our commitment to leveraging technology to make a real impact in the world – a professional who knows, beyond all else, that the quality of our products and services is only as good as the company we keep.

All candidates will be required to complete at least one in-person interview as part of our hiring process.

Job Summary

We are seeking an Application Developer Lead who combines deep technical expertise with strong leadership capabilities. This role is responsible not only for designing and delivering high-quality software solutions, but also for mentoring developers, ensuring code quality standards, sequencing work across the team, and supporting overall team performance and administrative coordination.

Key Responsibilities

Technical Leadership

Provide hands-on technical leadership in the design, development, and delivery of enterprise applications using .NET and Angular technologies.
Establish and enforce development standards, architectural patterns, and coding best practices.
Lead technical design sessions and ensure alignment with Domain Driven Design (DDD), Service Oriented Architecture (SOA), and Object-Oriented (OO) design principles.
Review and approve solution designs to ensure scalability, maintainability, and security.
Participate in and contribute to system architecture decisions in collaboration with architects and senior stakeholders.

Quality Oversight & Code Governance

Conduct and oversee code reviews to ensure adherence to coding standards, testing coverage, and architectural consistency.
Monitor technical debt and proactively guide remediation efforts.
Ensure CI/CD best practices are followed using Azure DevOps, Git, or similar tools.
Promote secure coding standards and cloud best practices in AWS or similar environments.

Team Leadership & Mentorship

Mentor and coach mid-level and junior developers.
Lead onboarding efforts for new developers, including training on codebase, development standards, tools, and team processes.
Provide ongoing technical training and professional development guidance.
Serve as a technical escalation point for complex issues.

Work Sequencing & Delivery Coordination

Collaborate with Product Owners, Business Analysts, and Project Managers to sequence development work.
Break down large initiatives into manageable technical tasks.
Estimate development efforts and provide input into sprint planning and release planning.
Monitor team capacity and adjust assignments to optimize throughput and delivery timelines.
Ensure timely and high-quality completion of deliverables.

Administrative & Team Management Support

Assist in performance feedback and development planning for team members.
Support hiring processes through technical interviews and candidate evaluations.
Track and report on technical progress and risks.
Foster a collaborative, accountable, and positive team culture.
Promote continuous improvement within the development team.

Required Skills & Experience

Strong knowledge of Object-Oriented (OO) design patterns.
Experience with Domain Driven Design (DDD).
Strong understanding of Service Oriented Architecture.
Experience developing unit tests and implementing test-driven development.
6+ years of experience working with C# and .NET, including 2+ years with .NET Core.
4+ years of experience working with Angular (15+) and TypeScript.
3+ years of experience working with Git, Azure DevOps, or similar tools for version control and CI/CD.
2+ years of experience working with AWS serverless or similar cloud services.
Demonstrated experience leading development efforts or mentoring developers.
Bachelor’s degree or equivalent work experience.

Leadership Competencies

Proven ability to communicate complex software designs clearly to technical and non-technical stakeholders.
Strong organizational skills with the ability to sequence and prioritize work effectively.
High attention to detail and commitment to quality.
Excellent written and verbal communication skills.
Strong problem-solving and decision-making abilities.
Ability to work independently and in a collaborative team environment.
Demonstrated ownership mindset and accountability for team outcomes.

Location: Remote

Status: Full time position with full company benefits

NOTICE: EO/AA/VEVRAA/Disabled Employer – Federal Contractor. FEI Systems participates in E-Verify, a federal program that enables employers to verify the identity and employment eligibility of all persons hired to work in the United States by providing the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS), with information from each new employee’s Form I-9 to confirm work authorization. For more information on E-Verify, please contact DHS at (888) 464-4218.

Applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, marital status, political affiliation, disability, or genetic information, except where it relates to a bona fide occupational qualification or requirement. FEI Systems creates an Affirmative Action Plan on an annual basis. Pursuant to federal law, the portions of FEI Systems’ Affirmative Action Program that relate to Section 503 (Persons with Disabilities) and/or Section 4212 (Protected Veterans), are available for inspection upon request by applicants and employees during FEI Systems’ normal business hours.

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights (https://www.eeoc.gov/poster) notice from the Department of Labor.

Quick Apply

Refine Your Search

mid senior .net developer jobs in columbia, md

Application Developer Lead (.NET) - (Remote)

AWS Senior .NET Modernization Engineer

Tech Lead (Remote)

Senior Applications Developer

Mid level C#.Net Engineer with AI and AWS

Ground Software Engineer Senior

Senior Frontend Software Engineer - Ground Software

ARLIS Quantum Research Professional

Computer Programmer II

CNO Analyst Programmers, Levels I/II (AE26041159)

Computer Programmer III

Senior Relationship Manager – New Markets Tax Credit Advisory

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