Senior Software Engineer (.NET / React)OverviewWe are seeking an experienced Software Engineer to design, build, and enhance scalable applications. This role involves developing modern web solutions, contributing to architectural decisions, and collaborating with cross-functional teams to deliver high-quality software.
Key Responsibilities- Design, develop, and maintain features for large-scale web applications.
- Contribute across the full software development lifecycle (design, development, testing, and deployment).
- Build and enhance front-end components within React-based applications.
- Collaborate with team members to define technical solutions and system architecture.
- Analyze business and functional requirements and translate them into technical solutions.
- Develop scalable, high-performance systems with strong reliability and maintainability.
- Participate in code reviews, design discussions, and continuous improvement initiatives.
- Mentor junior developers and promote best practices across the team.
- Work with distributed teams to deliver high-quality solutions.
- Troubleshoot issues and drive them to resolution efficiently.
- Provide accurate task estimates and contribute to project planning efforts.
Required Qualifications- 7+ years of professional software development experience, with a strong focus on .NET technologies.
- Expertise in C# and .NET / .NET Core.
- Strong experience with ASP.NET and MVC architecture.
- Experience building single-page applications (SPA).
- Hands-on experience with RESTful APIs and/or RPC services.
- Advanced front-end development experience using React (components, routing, state management).
- Solid understanding of HTML5, CSS3, JavaScript/TypeScript, and modern front-end tooling.
- Experience developing microservices-based architectures.
- Strong experience with relational databases (e.g., SQL Server, PostgreSQL).
- Familiarity with caching solutions (e.g., Redis) and NoSQL databases (e.g., MongoDB).
- Experience with version control systems (e.g., Git).
- Experience building and maintaining CI/CD pipelines.
Preferred Qualifications- Experience with CI/CD tools such as Jenkins.
- Familiarity with cloud platforms (AWS, Azure, or Google Cloud).
- Experience with infrastructure-as-code tools (e.g., Terraform, Ansible).
Core Competencies- Strong analytical and problem-solving skills.
- Excellent written and verbal communication.
- Ability to work effectively in a fast-paced, collaborative environment.
- Strong attention to detail and organizational skills.
- Ability to manage multiple priorities and adapt to changing requirements.
Additional Information- This role may include occasional technical leadership responsibilities.
- Candidates should be comfortable working in a dynamic, team-oriented environment with distributed stakeholders.
Job Type & LocationThis is a Contract position based out of Lenexa, KS.
Pay and BenefitsThe pay range for this position is $62.50 - $69.44/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
Medical, dental & vision
Critical Illness, Accident, and Hospital
401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available
Life Insurance (Voluntary Life & AD&D for the employee and dependents)
Short and long-term disability
Health Spending Account (HSA)
Transportation benefits
Employee Assistance Program
Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace TypeThis is a fully onsite position in Lenexa,KS.
Application DeadlineThis position is anticipated to close on May 16, 2026.
About TEKsystemsWe're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.
The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
About TEKsystems and TEKsystems Global Services We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.
The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.
Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.
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