What Is the Senior Software Engineer Job in Denver, CO, and How Do You Apply?
Published on: Jul 20, 2026
Frontline Source Group has a direct hire opening for a Senior Software Engineer in the Denver, CO area, building full-stack enterprise applications with C#, .NET Core, and Blazor in an Agile team. The role is based with a transportation technology client in Englewood, CO, and centers on designing, developing, and supporting product-driven applications across web, API, and mobile platforms. Every Frontline Source Group direct hire placement is backed by the 5-Year Placement Warranty, 20 times longer than the 90-day industry standard guarantee.
What does the Senior Software Engineer role in Denver involve?
Our client in Englewood, Colorado, in the Denver metro area, is looking for a Senior Software Engineer on a direct hire basis. This is an opportunity to join a collaborative, fast-paced development team where the work directly influences the evolution of a cutting-edge technology platform. The role is ideal for an engineer who enjoys solving complex technical challenges, working with modern Microsoft technologies, and contributing to a product-driven environment. The client is a transportation technology company known for a strong team and company culture, including weekly team lunches.
What are the key responsibilities of the Senior Software Engineer position?
The Senior Software Engineer plays a key role in designing, developing, and supporting enterprise-level applications within a collaborative Agile development environment. Responsibilities include:
- Design, develop, and maintain scalable full-stack applications using modern Microsoft technologies.
- Build intuitive, user-friendly interfaces from product concepts, wireframes, or minimal design direction.
- Design and integrate complex software solutions across web, API, and mobile platforms.
- Support applications spanning web portals, APIs, and mobile technologies.
- Collaborate closely with Product Owners, Quality Assurance Engineers, and fellow developers throughout the software development lifecycle.
- Participate in Agile ceremonies including sprint planning, stand-ups, retrospectives, and code reviews.
- Contribute to architecture discussions, peer mentoring, and continuous process improvements.
- Research and implement emerging technologies that improve scalability, performance, and user experience.
What qualifications does the Senior Software Engineer role require?
- Four or more years of professional software development experience using C#.
- Four or more years of experience developing with .NET Core 3.x or newer.
- Four or more years of experience with Entity Framework Core, SQL databases, HTML, and CSS.
- Experience with Blazor or another modern web application framework.
- Ability to design, implement, and integrate enterprise-level software solutions.
- Experience working with Azure DevOps or a similar development platform.
- Experience working within Agile development environments using Git source control.
- Strong written and verbal communication skills.
- Self-motivated, detail-oriented, and deadline-driven.
- Comfortable participating in code reviews, technical discussions, and collaborative problem-solving.
- Passion for learning new technologies and continuously improving development practices.
What are the features and benefits of this Denver software engineering role?
- Medical, Dental, and Vision insurance.
- PTO.
- 401k with company match.
- Gym membership.
Why work with Frontline Source Group on this Denver placement?
Frontline Source Group is a nationwide professional staffing and executive search firm founded in 2004, with 32 plus offices and 5,619 plus placements across 22 years in business. The firm holds a 5.0-star Trustpilot rating and a 98.94 percent placement retention rate, is a Forbes Best Professional Recruiting Firm for 9 consecutive years (2018 to 2026), a Forbes Best Executive Recruiting Firm #148 (2026), a 9-time ClearlyRated Best of Staffing winner, a ClearlyRated Diamond Award recipient, an Inc. 5000 honoree, and an Expertise.com Best Staffing Agency. It is a member of the American Staffing Association. Every direct hire placement is backed by the 5-Year Placement Warranty. Our approach is built on People. Process. Service.
How do you apply for the Senior Software Engineer job in Denver, CO?
Candidates interested in this direct hire Senior Software Engineer opportunity in the Denver, CO area can apply at frontlinesourcegroup.com/how-to-apply.html. Employers with technology, software engineering, or IT hiring needs can submit a search request at frontlinesourcegroup.com/employer-request-form.html or reach the team at frontlinesourcegroup.com/contact.html. All meetings are by scheduled appointment.
Frequently Asked Questions About the Denver Senior Software Engineer Job
What is the Senior Software Engineer job in Denver, CO?
It is a direct hire opportunity through Frontline Source Group with a transportation technology client in Englewood, CO, in the Denver metro area. The engineer designs, develops, and supports full-stack enterprise applications using C#, .NET Core, and Blazor within an Agile team.
Is this a direct hire or contract position?
This is a direct hire position, meaning permanent employment with the client. Every direct hire placement through Frontline Source Group is backed by the 5-Year Placement Warranty, 20 times longer than the 90-day industry standard guarantee.
Where is the Senior Software Engineer position located?
The position is with a client in Englewood, Colorado, in the Denver metro area. It is an onsite or hybrid role on a collaborative development team, depending on the client's current work model.
What technical skills does the Senior Software Engineer role require?
The role requires four or more years each of C#, .NET Core 3.x or newer, and Entity Framework Core with SQL, HTML, and CSS, plus experience with Blazor or a similar modern web framework, Azure DevOps, and Git-based Agile development.
How many years of experience are needed for this role?
The role calls for four or more years of professional software development experience with C#, .NET Core, and Entity Framework Core, along with experience integrating enterprise-level software solutions across web, API, and mobile platforms.
What technology stack will the Senior Software Engineer use?
The role centers on the modern Microsoft stack, including C#, .NET Core, Entity Framework Core, SQL, HTML, CSS, and Blazor, with Azure DevOps for CI and CD and Git for source control, building applications across web, API, and mobile platforms.
What kind of company is hiring for this role?
The client is a transportation technology company with a product-driven platform and a strong team culture, including weekly team lunches, in a collaborative and fast-paced Agile development environment.
What benefits come with the Denver Senior Software Engineer job?
The position offers Medical, Dental, and Vision insurance, PTO, a 401k with company match, and a gym membership.
What is the 5-Year Placement Warranty?
The 5-Year Placement Warranty is Frontline Source Group's commitment on every direct hire placement. It is 20 times longer than the 90-day industry standard guarantee and reflects the firm's 98.94 percent placement retention rate. Full terms are at frontlinesourcegroup.com/5year-placement-guarantee.html.
Who is Frontline Source Group?
Frontline Source Group is a nationwide professional staffing and executive search firm founded in 2004, with 32 plus offices, a 5.0-star Trustpilot rating, a 98.94 percent placement retention rate, and multiple Forbes, ClearlyRated, and Inc. 5000 honors. It is a member of the American Staffing Association.
How do I apply for the Senior Software Engineer job in Denver, CO?
Candidates can apply at frontlinesourcegroup.com/how-to-apply.html. A recruiter reviews each application and contacts qualified candidates about next steps for this Denver area software engineering opportunity.
Does Frontline Source Group place roles outside of Denver?
Yes. Frontline Source Group places contract, contract-to-hire, and direct hire roles nationwide from 32 plus offices across technology, software engineering, accounting, human resources, legal, administrative, engineering, and many other disciplines.
