Developer, Applications

Job Posting Start Date 02-16-2026 Job Posting End Date<p style="text-align:inherit"></p><p style="text-align:inherit"></p>Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.<p style="text-align:inherit"></p><p style="text-align:inherit"></p>A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary.<p style="text-align:inherit"></p><p style="text-align:inherit"></p><h2>Job Summary</h2><p><span>To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a </span><b><span>Developer Applications </span></b><span>located in </span><b><span>Buffalo Grove, IL.</span></b></p><p></p><p><span>Reporting to the </span><b><span>Systems Architecture Manager,</span></b> <span>the </span><b><span>Developer Applications </span></b><span>with strong experience in</span> <span>Manufacturing Execution Systems (MES)</span> <span>and</span> <span>enterprise system integrations. This role involves designing, developing, and deploying robust applications and services using</span> <span>modern technologies, ensuring seamless integration between MES and other enterprise platforms. The ideal candidate will have deep technical expertise, hands-on development experience, and the ability to work in regulated environments.</span></p><p></p><p><b><span>What a typical day looks like:</span></b></p><ul><li>Design and develop applications using .NET (C#) and SQL Server.</li><li>Build Windows Services, REST APIs, and real-time communication features using SignalR.</li><li>Develop responsive UIs using Bootstrap and Angular.</li><li>Read and interpret functional and technical specifications to ensure accurate implementation.</li><li>Perform unit testing and participate in stress test deployments to validate performance and reliability.</li><li>Implement integrations between MES and ERP, WMS, QMS, and other systems using modern protocols (REST, OPC UA, MQTT, AMQP).</li><li>Ensure secure, scalable, and reliable data exchange across platforms</li><li>Participate in solution design discussions and recommend best practices for integration and architecture.</li><li>Optimize performance and ensure high availability of applications.</li><li>Participate in solution design discussions and recommend best practices for integration and architecture.</li><li><span>Use Azure DevOps for CI/CD pipelines, version control, and automated deployments. </span></li><li><span>Ensure solutions meet regulatory requirements (e.g., FDA, GxP) and internal quality standards.</span></li><li><span>.</span> <span>Stay updated on emerging technologies such as event-driven architectures, microservices, containerization (Docker/Kubernetes), edge computing, OPC UA, MQTT, IIoT platforms, cloud-native services (Azure IoT, AWS IoT Core), and AI/ML for predictive analytics, and recommend adoption where appropriate.”</span></li></ul><p></p><p><b>The experience we’re looking to add to our team:</b></p><ul><li>Bachelor’s degree in Computer Science, Information Systems, or related field.</li><li>7&#43; years in application development with strong focus on .NET and SQL.</li><li>Mandatory: .NET (C#), SQL Server, Windows Services, Azure DevOps.</li><li>Good to have experience in regulatory environments (FDA, GxP).</li><li>Exposure to MES systems</li></ul><p></p><p></p><p>#LI-EA1</p><p>EA42</p><p>SS26</p><p>AA01</p><p>CH12</p><p>MS14</p><p>CC11</p><p style="text-align:inherit"></p><p style="text-align:left"><b>What you&#39;ll receive for the great work you provide:</b></p><ul><li>Full range of medical, dental, and vision plans</li><li>Life Insurance</li><li>Short-term and Long-term Disability</li><li>Matching 401(k) Contributions</li><li>Vacation and Paid Sick Time</li><li>Tuition Reimbursement</li></ul><p style="text-align:inherit"></p>Pay Range (Applicable to Illinois)<h3></h3><h3></h3>$94,900.00 USD - $130,500.00 USD Annual<p style="text-align:inherit"></p><p style="text-align:inherit"></p><h2></h2><h2>Job Category</h2>IT<p style="text-align:inherit"></p><p style="text-align:inherit"></p><p style="text-align:inherit"></p><p style="text-align:inherit"></p><h2></h2><p style="text-align:inherit"></p><p style="text-align:left">Is Sponsorship Available?</p>No<p style="text-align:inherit"></p><p style="text-align:inherit"></p><p style="text-align:inherit"></p><p style="text-align:inherit"></p><p style="text-align:inherit"></p><p style="text-align:inherit"></p><p style="text-align:inherit"></p><p style="text-align:inherit"></p>Flex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email accessibility@flex.com and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).