Javier Paredes

available

Senior Software Engineer | 25 Years in Backend Systems, API Integration & AI Evaluation

Cancún, Quintana Roo, MXremote ok

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$3.1/hr

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about

I'm a senior software engineer with 25 years of experience building backend systems, designing APIs, and connecting business platforms. I work with Python, Java, JavaScript, and SQL to develop services for e-commerce, payments, CRM, and back-office automation. I can take backend projects from architecture and database design through implementation, testing, deployment, and ongoing support. My experience includes microservices, event-driven integrations, SQL and document databases, payment gateways, and authentication providers. I troubleshoot production issues through logs and profiling, tune queries and indexes, and improve performance with targeted refactoring and caching. I also work on LLM and AI agent evaluation, testing model responses, reasoning consistency, end-to-end workflows, and tool-use behavior. I document edge cases and identify failures such as incorrect tool arguments or success claims after failed steps. I value clear technical documentation, reliable automated tests, and close collaboration with business teams. I speak native Spanish and fluent English and work remotely.

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Writing Gigs

Review a senior backend engineer's career materials for the US remote market (30-45 min)

I am a senior backend and AI engineer applying to remote roles at US companies. I want an honest outside read on how my professional materials land with a US audience. I will send you the materials privately in this bounty's chat after I accept your application. Nothing personal is posted publicly on this listing. Spend 30 to 45 minutes and send back written feedback covering these six points, in order: 1. First impression. After 15 seconds on the headline and summary, what do you think I do, and what seniority do you read me as? 2. Headline. Does it work for US remote senior backend and AI engineering roles? Give one or two concrete rewrites. 3. Summary section. What is unclear, too long, or generic? Name the sentences you would cut. 4. Experience. Do the role descriptions read as credible and specific, or vague? Name the single weakest bullet and say why. 5. Red flags. Anything that would make a US recruiter hesitate, including wording that reads as non-native English or AI-generated. 6. Top three changes, in priority order. Be blunt. Generic praise is not useful to me. I am paying for the parts that are not working.

LinkedIn profile reviewresume reviewtechnical recruiting+2

$55 applied

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reviews

experience

Senior Software AI Engineer at Terac (07/2026 - Present) Senior Software Engineer at ReservHotel (04/2021 - 05/2026) Senior Software Engineer at Palace Resorts (05/2000 - 02/2021)