Senior Software Engineer (CDMX)
About Nelo Nelo is a leading consumer fintech and e-commerce platform in Mexico, with >$500MM in annualized GMV and >$70MM in annualized revenue. Our mission is to increase the buying power of consumers in Latin America, and we are doing so by building a modern alternative to credit cards.
What this role actually needs.
About Nelo Nelo is a leading consumer fintech and e-commerce platform in Mexico, with >$500MM in annualized GMV and >$70MM in annualized revenue. Our mission is to increase the buying power of consumers in Latin America, and we are doing so by building a modern alternative to credit cards. Responsibilities: - Architect for Scale: You will design and ship backend systems that can handle our rapid growth without falling over. Larger projects and ambitious goals will help make the job more interesting. - Evolve the Tech: You’ll lead the charge in moving us from a Kotlin monolith to smarter microservices. Access to this technology streamlines work processes and allows you to stay at the forefront of your field. - Raise the Bar: You will mentor other engineers, not by lecturing them, but by coding well and reviewing hard. Helping others learn new things is often the biggest single thing candidates are interested in. - Solve Real Problems: You'll work with product and data teams to turn abstract ideas into working software. This allows you to see the direct impact of your work. Requirements: - You’ve been around the block. You have 5+ years of backend engineering experience and you’ve built (and broken) real distributed systems. - You value rigor. You are comfortable with Kotlin and Spring (or similar), and you know your way around AWS and Terraform. You understand that better resources and tools reduce frustration. - You think in systems. You don't just look at lines of code; you look at how the whole machine operates. - You have an opinion. You care about performance and data integrity, and you aren't afraid to speak up when you see a "quick fix" that will hurt us later. Company context: Nelo is a Mexico fintech company with engineering, product, and data hiring anchored in the Mexican market.
Day-to-day expectations
Nelo lists these responsibilities for the Senior Software Engineer (CDMX) role.
- Architect for Scale: You will design and ship backend systems that can handle our rapid growth without falling over. Larger projects and ambitious goals will help make the job more interesting.
- Evolve the Tech: You’ll lead the charge in moving us from a Kotlin monolith to smarter microservices. Access to this technology streamlines work processes and allows you to stay at the forefront of your field.
- Raise the Bar: You will mentor other engineers, not by lecturing them, but by coding well and reviewing hard. Helping others learn new things is often the biggest single thing candidates are interested in.
- Solve Real Problems: You'll work with product and data teams to turn abstract ideas into working software. This allows you to see the direct impact of your work.
What a strong candidate brings
These requirements are extracted from the source listing and normalized for UpJobz readers.
- You’ve been around the block. You have 5+ years of backend engineering experience and you’ve built (and broken) real distributed systems.
- You value rigor. You are comfortable with Kotlin and Spring (or similar), and you know your way around AWS and Terraform. You understand that better resources and tools reduce frustration.
- You think in systems. You don't just look at lines of code; you look at how the whole machine operates.
- You have an opinion. You care about performance and data integrity, and you aren't afraid to speak up when you see a "quick fix" that will hurt us later.
Why this listing is more than a copied job post.
Senior Software Engineer (CDMX) is framed against UpJobz source checks, country scope, compensation visibility, and work-authorization signals so candidates can make a faster go/no-go decision.
Mexico tech market
Mexico roles on UpJobz are filtered for high-tech relevance, source freshness, and actionable employer detail before they are allowed into SEO surfaces.
Compensation read
MX$150K – MX$220K per month • Offers Equity • Offers Bonus is visible before the click, so candidates can compare the role against local market expectations before applying.
Work authorization read
Current extracted signal: Mexico residents. UpJobz treats this as a search signal, not legal advice, and links visa-sensitive roles back to the relevant visa hub where possible.
Location read
On-site roles in Mexico City should be compared against commute, local salary bands, and nearby employer demand.
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- Tailor your resume around llm and go instead of sending a generic application.
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Interview themes
Watchouts
- MX$150K – MX$220K per month • Offers Equity • Offers Bonus is visible, so calibrate your application around the posted range.
- Use mexico residents as part of your positioning so the recruiter does not have to infer it.
- Show concrete examples of succeeding in on-site environments.
Keywords to match against your background
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Apply through the employer source
Open the source listing from jobs.ashbyhq.com, confirm the role is still active, then apply on the employer or ATS page.
Source: jobs.ashbyhq.com · Source ID: 295c5136-f0b5-407a-bb7c-64bf1bebaf2c · Confidence: 90/100 · Last checked: May 7, 2026
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