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Senior Developer – FileMaker Platform

Remote / Online - Candidates ideally in
Frederick, Frederick County, Maryland, 21701, USA
Listing for: MainSpring
Full Time, Remote/Work from Home position
Listed on 2026-10-24
Job specializations:
  • Software Development
    Backend Developer, Software Engineer, Full Stack Developer
Salary/Wage Range or Industry Benchmark: 75000 - 120000 USD Yearly USD 75000.00 120000.00 YEAR
Job Description & How to Apply Below

Job Location
:

Remote

Type
:

Full-time, Mon-Fri (EST)

Number of Openings
:1

Start Date
:

Immediately
Salary Range
: $75,000-$120,000 annually

Clearance Required
:

None

Main Spring, Inc. is looking for an experienced, innovative, and forward-thinking Senior File Maker Developer. The Senior Developer is responsible for planning, designing, developing, and implementing creative application solutions for a variety of government and commercial U.S. and international clients. Adherence to proven processes and standards outlined in the Main Spring Agile Development process is required. The ideal candidate is efficient, exhibits meticulous follow-through, and possesses the ability to prioritize competing demands effectively.

If you’re looking to join an organization with an exceptional work-life balance, look no further.

Essential Duties and Responsibilities

  • Design, develop, and maintain custom File Maker applications across desktop, web, and mobile environments. Develop and maintain scripts, calculations, layouts, custom functions, and automation workflows.
  • Architect and implement integrations with third-party applications and services using APIs and other external connectivity.
  • Administer, monitor, and optimize File Maker Server environments to ensure performance, reliability, security, and availability.
  • Troubleshoot and resolve complex application, performance, data integrity, and server-related issues.
  • Manage projects and enhancement requests, including effort estimation, scope definition, risk analysis, and timeline development. Collaborate with business stakeholders to gather requirements and translate them into scalable technical solutions.
  • Implement data migration, synchronization, and integration strategies between File Maker and external systems.
  • Create and maintain technical documentation, system architecture diagrams, and deployment procedures.
  • Participate in application lifecycle management, including testing, deployment, upgrades, and support.
  • Ensure project development/features remain in scope and proactively communicate with the team and the client throughout the course of projects.
  • Provide budget and schedule updates to the Team Lead.
  • Meet/exceed billable utilization targets.
  • Maintain proficiency and certification in development platforms as required.
  • Ability to effectively leverage AI-powered development tools and coding assistants as a force multiplier for application design, code generation, troubleshooting, documentation, testing, and productivity enhancement while maintaining strong engineering judgment, code quality,
    security
    , and solution ownership.
  • Strong experience with API integration, including:
    • REST, OData and GraphQL APIs
    • JSON, XML and other data structures
    • OAuth and token-based authentication
  • Advanced troubleshooting and root-cause analysis skills within the File Maker platform, including experienced diagnosing and resolving:
    • Script performance issues
    • Data integrity concerns
    • Server performance bottlenecks
    • Authentication and connectivity issues
    • Complex application defects
  • At least one tandem partner development skill, such as Sharepoint, Salesforce, PHP, VueJS, Apple Script, or SQL administration.
  • Mid-level skills in JavaScript, HTML, and CSS, especially in relation to File Maker webviewer interfaces and Klai (FMBetterForms).
  • Experience with or understanding of the Agile Lifecycle required. Demonstrate a strong history of success with developing and managing development projects.
  • Advanced knowledge of relational database and application design relating to File Maker;
    Including scripting, data parsing, and the ability to search technical documentation.
  • Demonstrate the ability to work as part of an application development team; create task lists, timelines and deliverables; work to meet project schedules determined by others.

Requirements

  • Bachelor’s degree in a related field preferred; or comparable experience is required.
  • Excellent communication and customer service skills.
  • Extended experience with the complete Claris File Maker Platform, and completion of all currently available Claris certifications.
  • Ability to effectively leverage AI-powered development tools and coding assistants as a force multiplier for application design, code generation, troubleshooting, documentation, testing, and productivity enhancement while maintaining strong engineering judgment, code quality, security, and solution ownership.
  • Strong experience with API integration, including:
    • REST, OData and GraphQL APIs
    • JSON, XML and other data structures
    • OAuth and token-based…
Position Requirements
10+ Years work experience
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