Senior Developer: Build & Modernize Multi-Platform Systems

Grimco; Sunset Hills (MO); On-site; USD 110,000 - 160,000; Full time

Benefits offered by this job

Medical, Dental, Vision

Paid maternity/paternity leave

Paid holidays

401K with profit sharing

Employee referral benefits

Job summary

Grimco is seeking a Senior Developer to contribute to a platform that has powered the business for decades and continues to modernize across a multi‑platform stack. You will bring strong development fundamentals, the ability to learn across languages and environments, and the judgment to navigate complex systems confidently.

You will collaborate with IT, project management, QA, and business stakeholders to deliver well-scoped, well-documented solutions. U.S. work authorization is required.

Qualifications

• 5+ years of professional software development experience.
• Ability to learn unfamiliar languages, frameworks, or platforms.
• Strong SQL and relational database skills with data modeling.
• Experience building integrations between systems—APIs, file-based exchanges, ERP connectivity.
• Clear communication with non-technical stakeholders.
• Security awareness integrated into daily work.

Responsibilities

• Build and maintain business application features across a multi-platform technology stack.
• Design and implement integrations between internal systems, external partners, APIs, and data pipelines.
• Apply modern development practices — clean code, modular design, SQL-first data access, and structured testing.
• Serve as a technical resource on complex projects, contributing to design decisions and seeing work through to delivery.
• Identify and follow through on opportunities to modernize and improve existing systems.
• Collaborate with IT, project management, QA, and business stakeholders to deliver well-scoped, well-documented solutions.
• Learn, maintain, and expand RPG applications as part of a broader development role.

Skills

5+ years exp

Learning agility

SQL skills

System integrations

Communication

Security awareness

Job description

Grimco is seeking a Senior Developer to contribute to a platform that has powered the business for decades and continues to modernize across a multi‑platform stack. You will bring strong development fundamentals, the ability to learn across languages and environments, and the judgment to navigate complex systems confidently.

You will collaborate with IT, project management, QA, and business stakeholders to deliver well-scoped, well-documented solutions. U.S. work authorization is required.