Application Developer III

Get AI-powered advice on this job and more exclusive features. Overview Work Schedule: Must be able to work 5 days/week onsite in St. Louis, MO. Role Overview: As an Application Developer III, you are a mid to upper-level contributor who designs, develops, tests, and maintains software applications aligned with business needs. This role blends technical proficiency, business domain fluency, emerging leadership, and strong interpersonal skills. The ideal candidate is self-directed, collaborative, and capable of building trusted relationships across the organization. Responsibilities Develop, test, and deploy software applications using languages such as TypeScript, JavaScript, .NET, Java, Python, or C# Modify and enhance existing applications to improve performance, usability, and maintainability Troubleshoot and resolve application issues and bugs in a timely and effective manner Maintain documentation for code, processes, and system configurations Participate in code reviews and adhere to development best practices Demonstrate self-motivation, enthusiasm for learning, and adaptability to change Actively listen and contribute to team discussions, offering thoughtful input on complex situations Assist in leading others by identifying issues early and helping teammates navigate challenges Demonstrate solid understanding of primary specialization, such as: UX Design Front-End Development Mid-Tier / Backend Development Database Development Broaden expertise beyond core specialization by developing complementary skills across other technical areas. Possess foundational knowledge of the broader application landscape, including: CI/CD pipelines Observability tools and practices Event-driven architecture Application security principles Support team cohesion by practicing active listening and showing consideration for diverse perspectives. Build authentic, respectful, and valued relationships with individuals at all levels of the organization. Qualifications Bachelor’s degree in computer science, Software Engineering, or related field 5+ years of experience in application development Proficiency in one or more programming languages (e.g., Java, .NET, Python) Familiarity with software development life cycle (SDLC) and Agile methodologies Knowledge of software testing methodologies and tools Strong problem-solving and analytical skills Strong interest in emerging web technologies Excellent communication and teamwork abilities Demonstrate ability to learn from feedback and grow in leadership readiness Experience with system architecture mapping, business process modeling, and mentoring is a plus Benefits Industry-Leading Healthcare Coverage Profit-Sharing Plan with Safe Harbor Contribution Generous Paid Time Off & Holidays Paid Parental Leave Tuition Reimbursement Program Free Onsite Fitness & Recreation Center Seniority level Mid-Senior level Employment type Full-time Job function Engineering and Information Technology Industries Staffing and Recruiting Referrals increase your chances of interviewing at LaunchCode by 2x Get notified about new Application Developer jobs in St Louis, MO.

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