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TEKsystems

Sr. Integration Engineer

Longmont, CO, United States

$75 to $90 USD / hour

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Job details

Pay: $75 to $90 USD / hour
Posting language: English
Posted: Oct 8, 2026

Original job description

TEKsystems has a contract role for an Intergration Developer supporting a ERP implementation project.

Our client is replacing its current ERP with Infor LN. Interface build and testing are under way from October 2026, with go-live targeted for July 2027.

The program includes integrations between Infor LN and the following third-party systems: Various SAAS applications.

The primary vendor partner will build and tests the LN side, but our client owns the other side: third-party configuration or build, test environments, connectivity, credentials and end-to-end testing. The Business Systems team designs, prepares and builds, with one engineer on integration, but build and test need a second integration engineer.

Role Summary

You are one of two hands-on integration engineers on the client side, from validating Infors technical specifications, through build, connectivity, testing and go-live support. You own the non-LN build and configuration (API configuration and authentication, middleware and connector configuration, file interfaces, scripts and test automation), the test environments, the connectivity between LN and each third-party system, and the tests that prove each integration works. Salesforce is administered in-house; for the two on-premises systems the vendors' professional services may be engaged for their side, in which case you coordinate and test that work. The first priority is proven connectivity for the complex integrations in test environments, followed by unit testing of the standard ones.

This is a systems-integration role, not an application development role: the craft is making an ERP and its surrounding systems talk, and proving it, on a live implementation.

Responsibilities

Review Infor's technical specifications (TAR-040) from the third-party side: mappings, keys, error handling, feasibility

Build and configure the third-party side: Salesforce with the Salesforce administrator, API and file interfaces for cloud vendors, vendor professional services for on-premises systems

Obtain and configure vendor test environments, credentials and service accounts; keep the inventory; maintain environment-specific endpoints, credentials and configuration across Infor's test, training and production tenants and each vendor's equivalent; keep the per-integration readiness record current

Prove each LN to third-party connection early in the test landscape; work with client infrastructure on network and security for on-premises systems

Trace failures across LN, middleware, network and third-party systems using API responses, logs, message queues, SQL and vendor diagnostics; own the fix or the escalation

Write and execute unit and end-to-end integration tests with process owners; load test data with the data migration team; log and chase defects with Infor

Support deployment through Infor's environments to production, cutover checks and hypercare

Document a hand-over note per integration

Experience, Knowledge and Skills:

Required:

5+ years of hands-on integration engineering between business systems: building, connecting and testing

REST API integration (OAuth, API keys, payloads, error handling) and file-based integration (flat file, XML, SFTP)

Setting up and running integration tests: environments, test data, defect tracking with a vendor team

Reading technical specifications critically; working with vendors to obtain documentation, sandboxes and support

An ERP implementation or major upgrade taken through go-live

Strongly valued:

Manufacturing or distribution experience: shop floor, warehouse, shipping, order-to-cash

An integration platform: Infor ION and its API Gateway especially valuable; Boomi, MuleSoft, Azure Integration Services or comparable

Salesforce integration (Apex development is not expected; useful if you have it); exposure of on-premises systems to cloud applications

Automates what repeats: builds Postman or similar collections and runs them unattended; scripts test data setup and result comparison (Python, PowerShell or similar); generates and validates test files against schemas; reads integration logs and message queues to find where a transaction died; checks what actually landed with SQL.

Comfortable on a small client-side team next to a larger vendor team; documents as a habit; direct about what does not work. Drives technical issues with vendors and implementation partners to resolution without waiting to be asked.

Working Relationships

Reports to the Technical Delivery Architect, who reports to the Transformation Director. Joins a small team of builders: an Enterprise Applications Engineer close to full time on integration and a Business Systems Analyst part of the time, both of whom design, prepare and build and continue to support IFS. Works daily with Infor's integration architect and functional consultants, client's Salesforce administrator, process owners, vendor professional services and client infrastructure.

Will start as a 6-month contract with the expectation of extension through go-live (July 2027) and hypercare.

If remote, must work Mountain time and travel to Boulder, CO area one week each month.

We reserve the right to pay above or below the posted wage based on factors unrelated to sex, race, or any other protected classification.

Medical, Dental & Vision
401(k)/Roth
Basic/Supplemental Life & AD&D
Short and long-term disability
HSA & DCFSA
Transportation benefits
Employee Assistance Program
Company Paid Time off or State Sick Leave

Job Type & Location

This is a Contract position based out of Longmont, CO.

Pay and Benefits

The pay range for this position is $75.00 - $90.00/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a fully remote position.

Application Deadline

This position is anticipated to close on Oct 13, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

Were a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. Were a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. Were strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. Were building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.

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