Top Application Engineer Jobs in Chicago, IL

Leads mechanical application engineering for prefabricated data-center platforms, including fan coil units, chilled-water skids, hydronic systems, and integrated assemblies. Translates customer requirements into manufacturable designs, sizes mechanical components, develops BOMs and technical documentation, and supports prototyping, FAT/SAT, and first-article builds. Collaborates with electrical, controls, supply chain, sales, operations, vendors, and fabricators while applying DFM/VAVE principles and maintaining revision-controlled documentation.

Deploys and manages applications across development, testing, staging, and production environments. Builds Terraform infrastructure-as-code modules, maintains CI/CD pipelines, automates deployment processes, troubleshoots issues, and performs deployment testing. Ensures release-policy compliance, documents procedures, stays current with DevOps practices, and mentors junior engineers. Collaborates with development and operations teams to improve deployment reliability and efficiency.

Develop and maintain full-stack web applications for a federal environmental data client. Responsibilities include participating in Agile SDLC activities, designing and implementing scalable software, collaborating with analysts and stakeholders, testing and deploying applications, maintaining technical documentation, following development best practices, and recommending modern tools and technologies. The role requires AWS, TypeScript, Node.js, React or Angular, PostgreSQL, event-driven architecture, and strong communication skills.

Build and maintain full-stack applications that deliver AI/ML insights through backend services, REST APIs, containerized microservices, and high-performance front-end interfaces. Responsibilities include cloud-native development on Google Cloud or Azure, database management, testing, CI/CD automation, security, troubleshooting, and Agile collaboration.

Installs, upgrades, supports, and troubleshoots HealthEdge applications across private cloud, AWS, and customer-hosted environments. Uses deployment, automation, alerting, cloud, container, database, middleware, and scripting technologies to manage SaaS environments. Collaborates with teams, documents solutions, improves processes, supports production upgrades, and communicates with project teams and senior management. Occasional off-hours work may be required.

Application Engineer responsible for installing, upgrading, configuring, supporting, and maintaining compliance applications in UNIX, Java, Oracle, and AIX environments. The role includes troubleshooting, root cause analysis, vendor and business coordination, SLA-driven issue resolution, Jira and incident-ticket management, requirements analysis, SDLC project support, vulnerability remediation, and SME support for L1 teams.

Leads development, deployment, configuration, maintenance, and support of compliance applications in UNIX, Java, Oracle, and AIX environments. Troubleshoots SLA-driven incidents, performs root cause analysis, coordinates with vendors and business teams, manages Jira and incident tickets, supports L1 teams, verifies requirements, and assists with vulnerability remediation. The role also leads projects through the SDLC and serves as a subject matter expert for application support and sanctions-screening systems.

Reviews cooling-system drawings and submittals for equipment selection, capacity, and hydronic configuration accuracy. Collaborates with customer and consulting engineers, supports estimating with technical proposal input, and provides engineering assistance to project managers and customers throughout installation and startup. Resolves technical questions, drawing conflicts, RFIs, and submittals, while feeding field experience into research and product development. The role focuses on data center cooling systems, including chillers, CDUs, and liquid cooling for AI and hyperscale deployments.

Develop, maintain, integrate, test, and support database-driven web applications for VHA ORD programs. Responsibilities include SQL queries and stored procedures, application debugging, functional and regression testing, production troubleshooting, deployment coordination, defect resolution, documentation, and communication with technical and non-technical stakeholders.

Serve as the primary pre-sales technical partner for manufacturing customers. Lead discovery, requirements gathering, production-data and CAD analysis, robotic automation solution design, scoping, cost estimation, proposal support, customer design reviews, and handoffs to deployment. Manage multiple technical workstreams, improve standard designs and procedures, identify offering gaps, and visit customer sites for discovery and validation. Expertise in palletizing or case packing and major six-axis robot platforms is preferred.

Designs, develops, and maintains REST APIs, middleware, authentication workflows, and enterprise system integrations in a secure federal and DoD-aligned environment. Responsibilities include data transformation, API lifecycle management, troubleshooting, secure coding, schema modeling, automated testing, documentation, and collaboration with architects and cybersecurity teams. The role requires an active Top Secret clearance, six or more years of relevant experience, a bachelor’s degree, and CompTIA Security+ certification.

Develop and maintain Xactly Connect integration pipelines, transformations, schedules, and data exchanges. Partner with finance, sales compensation, accounting, sales, and IT stakeholders to define requirements. Troubleshoot data quality issues, failed jobs, mismatches, and pipeline errors before commission runs. Document configurations, mappings, and transformation logic while supporting continuous improvement.

Leads architecture and development of Thunderbird’s web-based Services products, including calendar and secure file storage offerings. Responsibilities include writing code, prototyping, selecting technologies, developing analytics and infrastructure, solving complex problems, guiding product direction, mentoring engineers, and improving scalability and sustainability. The role collaborates across engineering, product, design, QA, Mozilla, and open-source communities in a fully remote environment.

Lead architecture and technical direction for Thunderbird’s web-based Services products, including calendar and secure file storage offerings. Responsibilities include writing code, prototyping, making technology decisions, developing analytics and infrastructure, solving complex problems, mentoring engineers, collaborating across product and design teams, and improving system scalability and maintainability. The role also contributes to product growth, open-source collaboration, and data-informed decisions within a fully remote international team.

Develops technical solutions for medical device customers by translating specifications into manufacturable designs. Responsibilities include application feasibility analysis, custom solution development, quotations, cost modeling, pricing support, technical presentations, customer training, and cross-functional coordination with sales, R&D, manufacturing, quality, and operations teams.

Develops, tests, maintains, and sustains software applications using APIs, low-code/no-code platforms, BPMN automation, MuleSoft, .NET, and SQL Server. Translates requirements into program specifications, supports application design and modifications, and contributes to testing, documentation, and reporting. The role requires agile and hybrid development experience, a MuleSoft certification, DoW-approved IAT Level I certification, a relevant degree, and an active Secret clearance.

Support application teams by designing, configuring, and operating F5 and cloud application delivery platforms. Configure BIG-IP and F5 Distributed Cloud, manage DNS/GTM, tune WAF, troubleshoot connectivity and performance, onboard applications, automate repeated work with AI-assisted tooling, maintain runbooks, respond via ServiceNow, and participate in on-call rotation.

Develop and architect large-scale enterprise applications as part of an agile full-stack team. Design cloud-native architectures, microservices, APIs, data platforms, and responsive front-end applications. Analyze business and technical challenges, translate stakeholder needs into technical roadmaps, and support modernization initiatives. Collaborate on solution design, coding, reviews, testing, documentation, demonstrations, and production issue resolution while championing secure, scalable, maintainable engineering practices.

Develop, maintain, and test enterprise web applications using ASP.NET and Microsoft SQL Server. Design relational databases and T-SQL queries, write front-end HTML/CSS/JavaScript, collaborate with teams, and support full project lifecycle and existing websites.

Front-end Web Application Developer for a large bank near Downers Grove/Oakbrook. Must be strong in JavaScript and experienced with responsive HTML5 and CSS. Role involves programming and testing in JavaScript, onsite work with some remote flexibility, and training on Avoka web forms. Java and .NET skills are a plus. No sponsorship or corp-to-corp; salary $80K–$100K.

Work as an SRE embedded with product teams to improve reliability by fixing application code (primarily TypeScript), building observability (Prometheus, Loki, Grafana, Alloy), defining SLIs/SLOs, leading incident response and postmortems, automating toil, and supporting deployments across on‑prem DoD and AWS environments.

Build and maintain full-stack web applications, APIs, backend services, integrations, and event-driven data pipelines. Collaborate on architecture, product requirements, code reviews, testing, troubleshooting, and engineering standards. Contribute to scalable, secure, reliable software while mentoring engineers and supporting development-process improvements.

Owns the full NetSuite ERP lifecycle, including development, configuration, integrations, upgrades, production support, security, validation, and audit readiness. Develops SuiteScript customizations, workflows, dashboards, reports, and automations across finance, procurement, inventory, revenue, operations, and field service. Manages middleware and third-party integrations, coordinates vendors, troubleshoots complex issues, supports end users, and documents system configurations and compliance artifacts in multi-entity, multi-currency environments.

Develop and maintain native iOS and Android applications for streaming experiences. Collaborate on TV platforms, establish architecture, and utilize AI tools to enhance productivity.

Remote Mendix low-code developer to design, configure, and implement Mendix applications (microflows, nanoflows, domain models, UI, integrations). Support requirements gathering, process analysis, UAT, QA, defect resolution, and Agile/Scrum delivery for an Arizona state agency. Coordinate with stakeholders and maintain project documentation.