.NET / React Developer - IA

Job#: 3026530

Job Description:
Client: Financial Services
Team: TBA
Job Title: Software Engineer 3 - .NET / React / APM / SQL
Location: Des Moines ONLY (Zone 2)
Contract Length: 12mo
Bill Rate: $53 - $57
Top Requirements (Must Haves):

4+ years Software Engineering experience

4+ years .NET programming (C#, .NET Core, APIs)

3+ years front-end development using React / Angular / JavaScript

2+ years Application Performance Management (APM) tools experience

• AppDynamics
• Dynatrace

3+ years SQL / database experience

3+ years Agile experience (Scrum or Kanban)

Desired Qualifications:

2+ years Kubernetes development experience

2+ years Python programming

2+ years Site Reliability Engineering (SRE) exposure

Production support / troubleshooting experience

GenAI development or AI-assisted engineering experience (nice to have)

Financial services background (nice to have)

Job Summary:

The Software Engineer 3 will support moderately complex software engineering work involving .NET backend development, modern JavaScript front-end frameworks, application performance monitoring, SQL development, and Agile delivery. The engineer will troubleshoot and enhance production systems, contribute to Feature/APM instrumentation, and collaborate with cross-functional teams to ensure application stability, performance, and modernization.

This role requires hands-on coding in .NET and React/Angular, analyzing application performance with tools like AppDynamics/Dynatrace, and supporting operational reliability through SQL data work and optional SRE practices.
Day-to-Day Responsibilities:

Develop backend components using .NET / C#

Build and enhance front-end features using React or Angular

Use AppDynamics / Dynatrace to diagnose performance issues and optimize applications

Write SQL queries, stored procedures, and tune database interactions

Participate in Agile ceremonies (standups, planning, grooming)

Provide L3-level support and troubleshoot production issues

Contribute to application modernization and performance improvements

Collaborate with QA, SRE, DevOps, and product teams

Implement CI/CD pipelines and follow SDLC best practices

Work with Kubernetes or containers (if applicable)

Support GenAI-driven or AI-enabled engineering enhancements (desired but optional)

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.