C++ Developer

Apex Systems; Chicago (IL); Hybrid; USD 96,000 - 98,000; Part time

Job summary

Everforth Apex in Chicago, IL seeks a Senior Optimization Developer to design and implement high-performing, large-scale C++ applications and optimization models in a hybrid environment. You will collaborate with cross-functional teams to translate requirements into effective optimization solutions using tools like CPLEX, GUROBI, LINDO, and Xpress.

The role requires 4+ years in applied operations research, strong C++ skills, and experience with Python or Julia.

Qualifications

• Bachelor’s degree in Industrial Engineering, Operations Research, Mathematics, or related field.
• 4+ years of professional work experience in applied operations research, including decision analysis, optimization, simulation, statistics, and stochastic modeling.
• Strong experience with C++ and proficiency with commercial optimization software (CPLEX/GUROBI/LINDO/Xpress).
• Experience with Python and/or Julia; familiarity with Linux environments and Unix shell scripting.

Responsibilities

• Design, develop, and maintain high-performing, large-scale C++ applications and optimization models.
• Collaborate with business and technical teams to translate requirements into optimization solutions.
• Utilize optimization software (e.g., IBM ILOG CPLEX) to build and solve complex models.
• Follow software engineering best practices, including version control, packaging, and release management.

Skills

C++

Optimization

Linux

Unix shell scripting

Education

Bachelor’s degree in a related field

Tools

IBM ILOG CPLEX

GUROBI

LINDO

Xpress

Python

Julia

Job description

# C++ DeveloperApply**Job#: 3040920****Job Description:**C++ Developer**Location:** Chicago, Illinois (Hybrid)Role OverviewWe are seeking a talented and motivated Senior Optimization Developer with experience in designing and developing high-performing, large-scale applications. The candidate will work closely with business, technical, and operations research teams to gather, analyze, and understand business requirements. This role involves building mathematical optimization, statistical, and decision support models.Key Responsibilities* Design, develop, and maintain high-performing, large-scale C++ applications and optimization models.* Collaborate with business and technical teams to translate requirements into effective optimization solutions.* Utilize commercial optimization software, such as IBM ILOG CPLEX, to build and solve complex models.* Employ software engineering best practices, including version control, packaging, and release management.* Work with languages like Python and Julia to support modeling and development tasks.* Operate within a Linux server environment and use Unix shell scripting.Required Qualifications**Education:** A Bachelor’s degree from an accredited college or university with a focus in Industrial Engineering, Operations Research, Mathematics, or a related field is required.**Experience:** A minimum of 4 years of professional work experience in applied operations research is required. This includes experience with decision analysis, optimization, simulation, statistics, and stochastic modeling.**Technical Skills:*** Strong experience with C++.* Proficiency with commercial optimization software such as IBM ILOG CPLEX, GUROBI, LINDO, or Xpress.* Knowledge of optimization modeling and theory, including nonlinear and mixed-integer optimization.* Experience with Python and/or Julia.* Familiarity with Linux environments and Unix shell scripting.* Must be legally authorized to work in the United States for any employer.Preferred Qualifications* Experience working in a transportation environment.* Knowledge of Java or JavaScript.* Experience with cloud platforms. *Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth 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 ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.**Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy**Everforth Apex Benefits Overview: Everforth 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. Everforth 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, Everforth 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. Everforth 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 Everforth Apex team member can provide.**Everforth 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. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.**If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.**UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.***Employee Type:** Contract**Location:** Chicago, IL, US**Job Type:****Date Posted:** August 7, 2026**Pay Range:** $70 - $71 per hour