Python developer Jobs in Chicago, IL

Innovate. Create. Elevate.

Ontrac Solutions is a strategic consulting and technology partner helping organizations innovate, create, and elevate through modern digital solutions. We support our clients with product development, cloud consulting, automation, data solutions, and staff augmentation by connecting them with high-quality talent ready to make an immediate impact.

We are currently hiring on behalf of one of our clients for a Senior Python Engineer to support a critical customer engagement.

Position Overview

We are seeking a highly skilled and experienced Senior Python Engineer to join a fast-moving engagement supporting enterprise-level software initiatives. This role is ideal for an engineer with deep Python expertise, strong software engineering fundamentals, and a clear understanding of the software development lifecycle within enterprise-grade environments.

The ideal candidate will be comfortable working across application, system, and runtime layers, and will bring a practical understanding of Linux, networking, software delivery pipelines, and debugging in production environments. This individual will work closely with customer stakeholders and technical teams to help deliver reliable, maintainable, and production-ready solutions from initial definition through final delivery.

Required Credentials

• 5+ years of software engineering experience, ideally within enterprise-grade organizations
• Bachelor's degree in Engineering, Computer Science, Information Technology, or equivalent practical experience

Required Qualifications

• 5+ years of professional software engineering experience with strong hands-on Python development
• Expert-level proficiency in Python, including writing clean, maintainable, well-tested, and production-ready code
• Experience reading, understanding, and making minor modifications to Perl code
• Strong understanding of networking fundamentals and how network behavior impacts the software development lifecycle
• Strong understanding of software delivery pipelines and the full deployment lifecycle, including build, test, release, and production workflows
• Strong understanding of Linux environments and debugging techniques, with the ability to diagnose and resolve complex issues across application, system, and runtime layers
• Ability to work effectively in enterprise environments with an emphasis on reliability, automation, and operational readiness

Preferred Qualifications

• Relevant security certifications such as CISM, CISSP, or CEH
• Experience with monitoring, telemetry, and alerting tools such as Prometheus, Grafana, or ELK-based stacks
• Familiarity with packet filtering and host-based firewall technologies such as iptables or IPFW
• Working knowledge of modern data formats including JSON, YAML, and XML

Scope of Work / Delivery Expectations

This role will be responsible for delivering end-to-end software solutions that are reliable, maintainable, and production-ready. The engineer will be expected to apply deep Python expertise, strong programming fundamentals, and defensive coding practices to build systems that perform effectively in real-world enterprise environments.

This individual should demonstrate strong ownership across the full software lifecycle, including:

• Solution design
• Development
• Testing
• Deployment
• Post-release support

Successful delivery in this role will require a solid understanding of Linux, networking, debugging, and software delivery pipelines, along with the ability to identify root causes, resolve complex technical issues, and continuously improve system quality, resilience, and operational performance.

Why Join Ontrac Solutions

At Ontrac Solutions, we work closely with our clients to solve meaningful business and technology challenges. We pride ourselves on pairing strong talent with impactful opportunities where they can contribute quickly and effectively. If you are a senior engineer who enjoys solving complex problems, working in enterprise environments, and delivering high-quality solutions, we'd love to hear from you.