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Senior Solutions Engineer - Messaging APIs

Freelance Latin America • Uruguay • Argentina


No Relocation

Posted: September 3, 2026

Job Description

We are looking for a Senior Solutions Engineer to support a U.S.-based technology-focused organization working with messaging and communication APIs. This remote role is ideal for a technically strong, intellectually curious engineer with hands-on WhatsApp Business API experience who can evaluate partner integrations, lead technical client engagements, and improve technical processes and tooling.

Duties / Task to perform

  • Review partner code and Postman collections to confirm integrations are fully built to technical specifications, not simply functional for demonstration purposes.
  • Evaluate and score technical integration requirements against documented rubrics, ensuring consistent and defensible pass/fail decisions.
  • Serve as the technical lead for multiple client engagements, collaborating with project and operational leads throughout the integration lifecycle.
  • Independently manage the technical aspects of client projects while escalating appropriate issues to leadership.
  • Provide clear updates on the technical status of assigned projects and identify recurring integration challenges.
  • Recommend improvements to technical processes and products based on patterns observed across partner implementations.
  • Contribute to vendor onboarding tooling for Apple APIs by proposing feature and code improvements based on real-world usage and technical reviews.
  • Help improve technical review processes and internal tooling as you become familiar with existing workflows.
We are looking for a Senior Solutions Engineer to support a U.S.-based technology-focused organization working with messaging and communication APIs. This remote role is ideal for a technically strong, intellectually curious engineer with hands-on What...
  • Senior-level Solutions Engineering capabilities with hands-on experience working with the WhatsApp Business API.
  • Previous WhatsApp API experience with a major messaging platform, Business Solution Provider (BSP), or technology provider.
  • Ability to review partner code, APIs, integrations, and Postman collections at a technical level.
  • Strong understanding of API integration requirements and the ability to assess implementations against documented specifications.
  • Ability to write and review code directly; AI tools should be used as support rather than as a substitute for hands-on technical capability.
  • Ability to independently lead the technical aspects of multiple client projects and determine when escalation is necessary.
  • Strong analytical and problem-solving skills with an interest in improving technical processes and tooling.
  • Fluent English with strong professional communication skills and familiarity with U.S. business culture expectations.
  • Collaborative, intellectually curious, and comfortable working with cross-functional teams.
  • Ability to successfully complete a criminal background check.

Schedule & availability: Full-time, remote | Monday through Friday, 8:00 AM to 3:00 PM San Francisco time zone.

Additional Content

We are looking for a Senior Solutions Engineer to support a U.S.-based technology-focused organization working with messaging and communication APIs. This remote role is ideal for a technically strong, intellectually curious engineer with hands-on WhatsApp Business API experience who can evaluate partner integrations, lead technical client engagements, and improve technical processes and tooling.

Duties / Task to perform

  • Review partner code and Postman collections to confirm integrations are fully built to technical specifications, not simply functional for demonstration purposes.
  • Evaluate and score technical integration requirements against documented rubrics, ensuring consistent and defensible pass/fail decisions.
  • Serve as the technical lead for multiple client engagements, collaborating with project and operational leads throughout the integration lifecycle.
  • Independently manage the technical aspects of client projects while escalating appropriate issues to leadership.
  • Provide clear updates on the technical status of assigned projects and identify recurring integration challenges.
  • Recommend improvements to technical processes and products based on patterns observed across partner implementations.
  • Contribute to vendor onboarding tooling for Apple APIs by proposing feature and code improvements based on real-world usage and technical reviews.
  • Help improve technical review processes and internal tooling as you become familiar with existing workflows.
We are looking for a Senior Solutions Engineer to support a U.S.-based technology-focused organization working with messaging and communication APIs. This remote role is ideal for a technically strong, intellectually curious engineer with hands-on What...
  • Senior-level Solutions Engineering capabilities with hands-on experience working with the WhatsApp Business API.
  • Previous WhatsApp API experience with a major messaging platform, Business Solution Provider (BSP), or technology provider.
  • Ability to review partner code, APIs, integrations, and Postman collections at a technical level.
  • Strong understanding of API integration requirements and the ability to assess implementations against documented specifications.
  • Ability to write and review code directly; AI tools should be used as support rather than as a substitute for hands-on technical capability.
  • Ability to independently lead the technical aspects of multiple client projects and determine when escalation is necessary.
  • Strong analytical and problem-solving skills with an interest in improving technical processes and tooling.
  • Fluent English with strong professional communication skills and familiarity with U.S. business culture expectations.
  • Collaborative, intellectually curious, and comfortable working with cross-functional teams.
  • Ability to successfully complete a criminal background check.

Schedule & availability: Full-time, remote | Monday through Friday, 8:00 AM to 3:00 PM San Francisco time zone.