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Senior Api Developer Jobs in Missouri (NOW HIRING)

Jobgether

$500/wk

Our partner is looking for a Senior Full-Stack Engineer - Trading API based in Netherlands. Join a ... building developer-focused infrastructure for modern financial services and digital trading. As ...

JS Consulting

Senior Developer

Saint Louis, MO · On-site

$53 - $70/hr

Job Title- Senior Developer Project Location - Hybrid in Saint Louis, MO Duration- Full-time Visa ... Strong knowledge of web API/REST. * Strong knowledge of documenting technical specifications.

Yuno

Through a single API, Yuno connects them to pay-ins, payouts, fraud prevention, KYC/KYB, and ... About The Role Yuno is looking for a Senior Web Developer to build the SDK, design system, and web ...

GDIT

Senior DevOps Engineer

Saint Louis, MO · On-site

$126K - $162K/yr

As a Senior DevOps Engineer you will help ensure today is safe and tomorrow is smarter. Our work ... Knowledge of HTTP API design standards and best practices * Ability to manage networking for web ...

GDIT

Senior DevOps Engineer

Saint Louis, MO · On-site

$126K - $162K/yr

As a Senior DevOps Engineer you will help ensure today is safe and tomorrow is smarter. Our work ... Knowledge of HTTP API design standards and best practices * Ability to manage networking for web ...

The Giant Bullseye

Senior Node.js Developer

Saint Louis, MO · On-site

$49.75 - $64.50/hr

We are seeking a Senior Node.js Developer to lead backend development for security and ... API security * Experience integrating with scanners, SIEM, or security platforms (e.g., Qualys ...

Apex Systems

API QA

Saint Louis, MO · On-site

Louis, Missouri (Onsite) Role Overview We are seeking a Senior QA Analyst to support enterprise ... Collaborate with developers to isolate root causes and verify defect resolution. * Create and ...

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Senior Api Developer information

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$14

$57

$82

How much do senior api developer jobs pay per hour?

As of Sep 8, 2026, the average hourly pay for senior api developer in Missouri is $57.90, according to ZipRecruiter salary data. Most workers in this role earn between $49.13 and $64.95 per hour, depending on experience, location, and employer.

What is a senior API developer?

Senior API Developers are experienced software engineers who specialize in designing, building, and maintaining Application Programming Interfaces (APIs) that allow different software systems to communicate. They often lead technical projects, mentor junior developers, and ensure APIs are secure, scalable, and well-documented. Senior API Developers typically work with a variety of programming languages and frameworks, and collaborate closely with other teams to align API solutions with business goals.

What skills and qualifications are needed to thrive as a senior API developer?

To thrive as a Senior API Developer, you need advanced programming skills (often in languages such as Java, Python, or Node.js), deep understanding of API design principles, and experience with RESTful and/or GraphQL APIs, typically supported by a relevant degree or professional experience. Familiarity with API management tools (like Postman, Swagger, or Apigee), cloud platforms (such as AWS or Azure), and knowledge of authentication protocols (OAuth, JWT) are vital. Strong problem-solving abilities, effective communication, and leadership skills help in collaborating across teams and mentoring junior developers. These competencies ensure robust, scalable API solutions that meet business needs and integrate seamlessly with other systems.

How do senior API developers typically collaborate with product managers and frontend teams during the development process?

Senior API Developers play a key role in bridging backend systems with product and frontend teams. They work closely with product managers to interpret business requirements into technical specifications for APIs. Regular collaboration with frontend developers ensures that APIs are designed for usability, performance, and scalability, often involving code reviews, feedback sessions, and iterative testing. Effective communication and proactive problem-solving are essential to align API functionality with both business objectives and user experience.

What is the difference between Senior Api Developer vs API Engineer?

AspectSenior API DeveloperAPI Engineer
Required CredentialsBachelor's in CS or related, experience in API developmentBachelor's or higher in CS, software engineering, or related field
Work EnvironmentSoftware development teams, tech companies, startupsDevelopment teams, cloud services, enterprise environments
Employer & Industry UsageTech firms, SaaS providers, e-commerceCloud providers, enterprise software, API platforms
Common Search & ComparisonOften compared for API design and development rolesFocuses on API infrastructure and deployment

While both roles involve working with APIs, a Senior API Developer primarily designs, develops, and maintains APIs, focusing on functionality and integration. An API Engineer often emphasizes the infrastructure, deployment, and scalability of APIs within larger systems. Understanding these distinctions helps employers and professionals choose the right role for their needs.

Are senior API developers in demand?

Senior API developers are in high demand due to the increasing reliance on web services and integrations across industries. They are often required to have expertise in REST, SOAP, and API security, with many organizations seeking experienced professionals to build and maintain scalable, secure APIs. The demand is expected to grow as digital transformation accelerates and companies prioritize cloud-based solutions.

How much do senior API developers make?

Senior API developers typically earn between $100,000 and $150,000 annually, depending on experience, location, and industry. They often have expertise in RESTful APIs, programming languages like Java or Python, and may hold certifications that enhance their earning potential.

What are the most commonly searched types of Api Developer jobs in Missouri?

The most popular types of Api Developer jobs in Missouri are:

What are popular job titles related to Senior Api Developer jobs in Missouri?

For Senior Api Developer jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Senior Api Developer jobs in Missouri look for?

The top searched job categories for Senior Api Developer jobs in Missouri are:

What cities in Missouri are hiring for Senior Api Developer jobs?

Cities in Missouri with the most Senior Api Developer job openings:

Senior Api Developer jobs near you
Infographic showing various Senior Api Developer job openings in Missouri as of August 2026, with employment types broken down into 84% Full Time, 2% Part Time, and 14% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $120,440 per year, or $57.9 per hour.

Senior Product Manager API Integrations & Technical Support (Healthcare Payer)

The Giant Bullseye

Saint Louis, MO • On-site

Contractor

Re-posted 2 days ago

Key responsibilities

  • Lead the product lifecycle for API integration capabilities, including strategy, development, deployment, and support.

  • Define and maintain API specifications, data models, standards, and documentation to enable secure and consistent integrations.

  • Collaborate with technical support teams to define and improve API error handling, monitoring, versioning, and issue resolution protocols.

Job description


________________________________________

Position Summary
We are seeking a Senior Product Manager to lead the strategy, design, and execution of enterprise API integrations and technical support solutions across our healthcare payer ecosystem. This individual will play a key role in enabling secure, scalable, and standards-based interoperability between internal systems, provider networks, third-party platforms, and regulatory agencies.

This role demands a deep understanding of API lifecycle management, healthcare data standards (e.g., HL7, FHIR, X12), and enterprise integration strategies, combined with strong leadership and cross-functional collaboration skills. The ideal candidate will have experience delivering technical solutions in complex healthcare payer environments, with a focus on performance, reliability, and supportability.

________________________________________

Key Responsibilities

  • Lead the product lifecycle for API integration capabilities — from strategy and roadmap definition through development, deployment, and ongoing support.
  • Define and maintain API product specifications, data models, standards, and usage documentation to enable secure and consistent integrations across payer platforms.
  • Partner with engineering, architecture, data governance, and business stakeholders to map source systems and data requirements to external and internal integration needs.
  • Drive alignment between business requirements (e.g., provider access, claims integration, eligibility checks) and technical delivery, ensuring APIs meet the performance, security, and compliance needs of a healthcare organization.
  • Collaborate with technical support teams to define and evolve API error handling, monitoring, versioning, and issue resolution protocols.
  • Lead technical support strategy for APIs, ensuring partners and developers have the tools, documentation, and guidance needed for successful integration.
  • Work with analytics and engineering teams to analyze API usage patterns, identify performance issues or opportunities, and define KPIs for platform reliability and customer satisfaction.
  • Facilitate cross-functional planning and agile execution, including backlog grooming, sprint prioritization, and go-to-market readiness.
  • Support enterprise interoperability and compliance initiatives (e.g., CMS Interoperability Rule, TEFCA) by managing APIs and integrations aligned with regulatory requirements.
    ________________________________________

Required Qualifications

  • 7+ years of experience in product management or technical product leadership, including 3+ years specifically focused on APIs and system integrations in a healthcare payer or similarly complex, regulated environment.
  • Strong understanding of payer business domains, including claims processing, eligibility and enrollment, provider systems, and EHR/EMR integration.
  • Proven ability to write or review API specifications and documentation (e.g., Swagger/OpenAPI), data models, and integration guides.
  • Experience with data mapping, source-to-target documentation, and working with enterprise data teams to align API functionality to source systems.
  • Deep familiarity with RESTful API design, API lifecycle management, and platforms like Apigee, Mulesoft, AWS API Gateway, or equivalent.
  • Strong understanding of FHIR, HL7, X12, and other healthcare interoperability standards.
  • Ability to analyze and report on technical issues, usage trends, and integration KPIs.
  • Excellent collaboration and communication skills; ability to interface effectively with engineers, business teams, and external partners.
  • Hands-on experience supporting technical troubleshooting and resolution for partner or internal developer API issues.
    ________________________________________

Education

  • Bachelor's degree in Computer Science, Information Systems, Healthcare Administration, or a related field required.
  • Master’s degree or certifications in Product Management, Healthcare IT, or Cloud/Integration Platforms preferred.

________________________________________

Preferred Experience

  • Experience working with or integrating provider portals, clearinghouses, or EHR platforms (e.g., Epic, Cerner).
  • Knowledge of CMS interoperability regulations, ONC guidelines, and payer data exchange requirements.
  • Familiarity with service-level management for APIs, including uptime SLAs, support tiers, and incident response.
  • Prior involvement in modernizing legacy systems or leading digital transformation initiatives in payer environments.