API Developer III

Kendall Group; Knoxville (TN); On-site; USD 90,000 - 120,000; Full time

Job summary

The Kendall Group in Knoxville, TN seeks an API Developer III to design, build, and maintain enterprise APIs and SSIS-based integrations that connect ERP data with internal systems, customers, and vendors. You will translate complex data models into reliable, scalable payloads and apply versioning and security best practices.

You will implement robust error handling, monitoring, and performance tuning while mentoring other developers and ensuring data integrity across the enterprise.

Qualifications

• 3 years of professional API development and SSIS system integrations.
• Strong knowledge of REST, HTTP, JSON, and authentication methods (API keys, OAuth).
• Experience with ETL patterns, data normalization, and transactional integrity.

Responsibilities

• Design, develop, and maintain RESTful APIs exposing ERP data and integrating with business systems.
• Build and maintain SSIS packages to orchestrate API integrations, data transformations, and error handling.
• Translate complex multi-valued data structures into normalized API payloads for external consumption.

Skills

REST APIs

HTTP/JSON

OAuth/API keys

SSIS

ERP integrations

Data normalization

Transactional integrity

API design

Troubleshooting data issues

Education

Bachelor's degree in Computer Science or equivalent

Tools

SSIS

Job description

## API Developer IIIApplylocations: Knoxville, TNtime type: Full timeposted on: Posted Todayjob requisition id: R-100894**About The Kendall Group**The Kendall Group is comprised of eight divisions with 75+ locations in ten states. Combined, we serve the Electrical, Automation, Pipe, Valve, and Fitting products, Steam, Lighting, Industrial Controls, and Instrumentation Industries. The Kendall Group is a 100% employee-owned company. Kendall offers a great opportunity for a rewarding career.**Why The Kendall Group?**Our employee ownership model is the core of who we are. You will not only own part of the company, but you will own your future. At Kendall, you'll have opportunities to learn and grow while being coached and mentored along the way. We're that company where people stay! We're proud to say more than 60% of our associates have more than 5 years of tenure, and more than 40% have greater than 10 years. At Kendall, you will be valued and supported, your ideas will be heard, your voice will matter, and you'll work alongside incredible people who care about your success.Role Summary: Reporting to the API Product Manager, The API Developer III is responsible for designing, building, and maintaining enterprise APIs and integration solutions that connect Enterprise Resource Planning to internal systems, customers, vendors. This role operates in a Microsoft SSIS centric integration environment and requires deep understanding of ERP data models, multi valued databases, and transactional workflows. The API Developer III will be responsible for complex integrations end to end, establishing standards for API and SSIS development, and mentoring other developers while ensuring reliability, performance, and data integrity across the enterprise.**Exciting work you will do:**The essential duties and responsibilities of the API Developer III position will consist of, but are not limited to the following:* Design, develop, and maintain RESTful APIs that expose and consume ERP data from business system, supporting orders, pricing, inventory, customers, and transactional workflows* Build and maintain SSIS packages to orchestrate API integrations, data transformations, scheduling, and error handling* Translate complex multi‐valued data structures into normalized API payloads suitable for external consumption* Implement API versioning, error handling and retry logic to support reliable enterprise integrations* Develop and maintain integrations using third‐party vendors, customers, eCommerce platforms, and internal systems* Work directly with business system multi-value data models, files, and business logic to ensure accurate and consistent data movement* Understand ERP transactional dependencies (orders, shipments, invoices, pricing, inventory) and design APIs accordingly* Partner with ERP analysts and business stakeholders to validate data definitions, workflows, and integration behavior* Establish and enforce API and SSIS development standards, naming conventions, logging, and documentation practices* Lead code reviews and design reviews for APIs and SSIS packages* Monitor integration performance and proactively troubleshoot data, performance, or reliability issues* Ensure security best practices are followed, including authentication, authorization, and protection of sensitive ERP data* Mentor API Developers in SSIS, API design, and ERP integration concepts* Collaborate closely with product management, ERP teams, infrastructure, vendors, and external partners* Contribute to long‐term API and integration roadmap planning* Perform other duties and special projects as assigned# ## **Competencies you possess:*** Customer Focus* Results, Action Oriented* Accountability and Responsibility* Teamwork and Collaboration* Strategic Ability* Problem-Solving* Process Management* Displaying Technical Expertise* Self-starter, Self-motivation* Integrity* Attention to Detail# ## **What you’ll need:*** **Work Experience**: 3 years of professional experience in API development and SSIS system integrations* **Education:**Bachelor’s degree in computer science, information systems, or equivalent experience* **Analytics/Computer Skills**: Strong analytical and problem solving skills; experience working with MS Office with a heavy emphasis on SSIS for API driven integration; Strong knowledge of REST, HTTP, JSON, authentication methods (API keys, OAuth, tokens); familiarity with ETL patterns, data normalization, and transactional integrity; working knowledge of basic programming concepts and syntax; proven ability to troubleshoot complex data and integration issues across systems* **Organization Skills:**Highly organized and detail-oriented; ability to multi-task and shift priorities as needed; ability to work in fast-paced, continuously evolving, and at times challenging environment; ability to work independently and be responsible for solutions end-to-end* **Cross-functional skills:**Ability to work well cross-functionally; provides excellent internal and external customer service* **Communication Skills:** Strong verbal and written communication skills; ability to present information in a manner that non-technical staff can understand* **Physical, Mental and Visual Skills:** The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disability to perform the essential functions. + Ability to see, talk and hear + Ability to sit for 8 hours a day* **Physical Environnent :** Normal office environnement* **Travel:** willing to travel up to 5%; including occasional overnight travelThe Kendall Group is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, gender, gender identity, sexual orientation, age, physical or mental disability, citizenship, military status, protected veteran status, genetic information, or any other characteristic protected under applicable federal, state, or local law.