Senior API Migration Engineer (REST APIs – Cloud Migration)
Anywhere
Category: Engineer
Industry: Financial Services
Workplace Type: Remote
Reference ID: JN -042026-106219
Date Posted: 04/30/2026
Shortcut: http://careers.eliassen.com/RO5O10
Description:
Remote
Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role.
Rate: $65.00 to $75.00/hr. w2
JN -042026-106219
#LI-JS1
Responsibilities:
- Lead migration and validation of REST APIs from on-prem Exadata to Oracle Database Cloud.
- Analyze and remediate API compatibility issues across endpoint changes, authentication mechanisms, and data handling logic.
- Execute API testing and validation using Postman and Insomnia.
- Optimize API performance within the Oracle Cloud environment.
- Update backend queries, stored procedures, and integrations impacted by migration.
- Partner with internal IT teams on migration strategy, testing cycles, and release readiness.
- Troubleshoot and resolve API defects during validation cycles.
- Ensure APIs meet performance, reliability, and security standards post-migration.
Experience Requirements:
- 6–10 years of experience in API engineering with a focus on migration work.
- Demonstrated experience migrating REST APIs in enterprise environments.
- Strong experience with REST API design, testing, and validation.
- Experience executing API migration between environments from on-prem to cloud.
- Hands-on experience with Postman and/or Insomnia.
- Experience with Oracle databases including Exadata and Oracle Database Cloud.
- Experience modifying API integrations tied to database changes.
- Understanding of authentication mechanisms such as OAuth and token-based methods.
- Ability to work in large-scale data environments.
- Preferred experience with Oracle Database Cloud migrations, financial services or regulated environments, large-scale data systems, and platform modernization initiatives.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland 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.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above