Top 427 C# .net developer Jobs in Colorado

Senior Full Stack Developer - .Net
Placed, LLC —Aurora, CO
- $55 - $70 an hour
- Contract
- Hybrid work
- Computer science
- Azure
- Computer Science
- Paid holidays
- Health insurance
Quick Apply
Software Engineer
AppColl, Inc. —Centennial, CO
- $60,000 - $110,000 a year
- Email
- Background check
- Mid-level
- Office
- Profit sharing
- Health savings account
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Lead Avionics Software Engineer
ThinkOrbital —Boulder, CO
- $130,000 - $170,000 a year
- Full-time
- 7 years
- Computer Science
- Laboratory experience
- Health insurance
- Dental insurance
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Staff Edge Compute Systems Engineer
Vantor Holdings Inc. —Westminster, CO
- $102,000 - $170,000 a year
- Full-time
- Computer science
- Computer Science
- System design
- 401(k) matching
- Pet insurance
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Sr. Software Engineer TS/SCI Polygraph
Leidos —Aurora, CO
- $131,300 - $237,350 a year
- Full-time
- Bachelor of Science
- Writing skills
- Windows
Staff Firmware Engineer
Particle Measuring Systems —Niwot, CO
- $150,000 - $195,000 a year
- Full-time
- Hybrid work
- Computer science
- Computer Science
- Bachelor of Science
- Health insurance
- Dental insurance
Senior Software Developer
Sensera Systems —Golden, CO
- $120,000 - $150,000 a year
- Full-time
- Computer Science
- 5 years
- Java
- Health savings account
- Disability insurance
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Senior Software Engineer, Mobile (React Native)
Alterra Mountain Company —Denver, CO
- $127,000 - $164,000 a year
- On call
- System design
- Office
- 3 years
- Commuter assistance
- Paid parental leave
Senior React Developer/Architect
CGI Group, Inc. —Centennial, CO
- $98,500 - $172,400 a year
- Analysis skills
- Mentoring
- Senior level
- Paid parental leave
- Paid holidays
Programming Analyst - AI Trainer
DataAnnotation —Centennial, CO
- $50 - $175 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
5d
Principal Cyber Software Engineer
Northrop Grumman —Aurora, CO
- $119,600 - $187,900 a year
- Overtime
- Computer Science
- Windows
- Java
- Paid holidays
- Disability insurance
Software Engineer Level 3 or 4
Northrop Grumman —Aurora, CO
- $114,000 - $213,400 a year
- Overtime
- 3 years
- Java
- Master's degree
- Paid holidays
- Disability insurance
Sr. Principal Cyber Software Engineer
Northrop Grumman —Aurora, CO
- $149,300 - $234,600 a year
- Overtime
- Computer science
- Computer Science
- Windows
- Paid holidays
- Disability insurance
Programming Analyst - AI Trainer
DataAnnotation —Westminster, CO
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
5d
Cloud Engineer - AI Trainer
DataAnnotation —Boulder, CO
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
5d
Staff Cyber Software Engineer
Northrop Grumman —Aurora, CO
- $185,900 - $292,100 a year
- Overtime
- Computer science
- Computer Science
- Windows
- Paid holidays
- Disability insurance
Backend Software Engineer - AI Trainer
DataAnnotation —Boulder, CO
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
5d
Associate Cyber Software Engineer
Northrop Grumman —Aurora, CO
- $80,100 - $125,800 a year
- Overtime
- Computer Science
- Mid-level
- Windows
- Paid holidays
- Disability insurance
Full Stack Developer (C# / .Net)
Ledgent Technology —Littleton, CO
- $100,000 - $125,000 a year
- Full-time
- Azure
- Computer Science
- 5 years
- Health insurance
- Dental insurance
Quick Apply
8h
Senior Developer
Integrated New Media, Inc —Denver, CO
- $110,000 - $170,000 a year
- Full-time
- Hybrid work
- 7 years
- Office
- SQL
- Health savings account
- Health insurance
Quick Apply

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c# .net developer jobs near colorado

Senior Full Stack Developer - .Net

Placed, LLC
Aurora, CO

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Job Details

Contract
$55 - $70 an hour

Benefits

Paid holidays
Health insurance
Dental insurance
401(k)
Paid time off
Vision insurance
Paid sick time

Qualifications

Containerization systems
Software engineering
Azure
MVC
Computer Science
CSS
Continuous Delivery (CD) implementation
IT transformation
Implementing cloud migration projects
.NET Core
Data retrieval time improvement
Microservices
Stored procedures
Event-driven architecture
AWS
Bachelor's degree
Developing and maintaining backend systems
DevOps automation
Cross-functional collaboration
TypeScript
Entity Framework
HTML
Cross-functional communication
T-SQL

Full Job Description

Our valued client in Aurora, CO are seeking a Senior Full Stack Engineer for their team. This is a six-month contract with the possibility of extension or conversion to full-time. This is a hybrid position that requires you to be on-site four days per week. We are unable to work with third-party companies or C2C.

Position Overview

We are seeking a skilled Senior Full Stack Engineer to maintain and modernize our core platform. You will manage our stable .NET and SQL Server stack while leading the migration toward a scalable, cloud-native microservices architecture. This role requires balancing robust legacy systems with cutting-edge architectural transformation.

Core Responsibilities

System Modernization
Break down monolithic .NET applications into distributed microservices.
Design scalable APIs and event-driven communication patterns.
Implement containerization tools to optimize deployment workflows.
Backend Engineering
Maintain and optimize existing .NET Framework and .NET Core applications.
Write complex, high-performing SQL queries, stored procedures, and schemas.
Diagnose and resolve database bottlenecks to ensure high availability.
Frontend Development
Build responsive, user-friendly web interfaces using modern JavaScript frameworks.
Ensure seamless integration between frontend UI and backend microservices.

Required Technical Skills

Backend: C#, .NET Core, ASP.NET MVC, Web API
Database: SQL Server, T-SQL, query optimization, ORMs (Entity Framework)
Architecture: Microservices, RESTful APIs, Event Buses (RabbitMQ / Kafka)
Frontend: Angular, React, or Vue.js, along with HTML5, CSS3, and TypeScript
Cloud & DevOps: Docker, Kubernetes, CI/CD pipelines, and AWS or Azure

Qualifications

Bachelor’s degree in Computer Science or equivalent work experience.
5+ years of professional full stack software development experience.
Proven track record of migrating legacy codebases to microservices.
Strong communication skills for collaborating across cross-functional teams.

This is a contract opportunity with an hourly rate starting at $55/hour and is based on experience. Benefits include: medical, dental, vision, 401k, paid time off and holiday pay.

Pay: $55.00 - $70.00 per hour

Benefits:

401(k)
Dental insurance
Health insurance
Paid holidays
Paid sick time
Paid time off
Vision insurance

Experience:

Developing in C# and .NET Core?: 5 years (Required)
TSQL Stored Procedures: 3 years (Required)
SQL Query writing : 3 years (Required)
deloping Angular, React, OR Vue.js: 5 years (Required)

Work Location: Hybrid remote in Aurora, CO 80019

Quick Apply

Refine Your Search

c# .net developer jobs in colorado

Senior Full Stack Developer - .Net

Software Engineer

Lead Avionics Software Engineer

Staff Edge Compute Systems Engineer

Sr. Software Engineer TS/SCI Polygraph

Staff Firmware Engineer

Senior Software Developer

Senior Software Engineer, Mobile (React Native)

Senior React Developer/Architect

Programming Analyst - AI Trainer

Principal Cyber Software Engineer

Software Engineer Level 3 or 4

Sr. Principal Cyber Software Engineer

Programming Analyst - AI Trainer

Cloud Engineer - AI Trainer

Staff Cyber Software Engineer

Backend Software Engineer - AI Trainer

Associate Cyber Software Engineer

Full Stack Developer (C# / .Net)

Senior Developer

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