Mark TellezMark Tellez

Why American Companies Should Work With Me

I offer exceptional value to American companies (as well as the rest of the world!) seeking top-tier software development talent without the associated costs and complexities of traditional hiring or dealing with troublesome Visas and burdensome taxes.

Award-Winning Technical Skills

AI Programming Champion

#8out of5,000participants worldwide(CodinGame Fantastic Bits)

Developed an advanced AI agent for the 'Fantastic Bits' competition, a complex game inspired by Quidditch where bots compete to score goals while defending their own. My reinforcement learning approach outperformed thousands of professional developers worldwide.

Placed 8th at the time of the competition, and after all these years my solution still holds up at rank #9!

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Proven Mentorship & Problem-Solving

Top-Rated Codementor

5.0
454 reviews

For 4 years, I served as a trusted mentor on Codementor, helping developers solve complex problems and advance their careers. My perfect 5-star rating reflects my commitment to clear communication, effective problem-solving, and exceptional teaching.

Specializing in React, Rails, JavaScript, and complex debugging sessions, I've helped hundreds of developers overcome technical challenges and grow their skills.

U.S. LLC Structure & Convenient Timezone

U.S. LLC Structure

I operate through a U.S.-based LLC, making it straightforward for American companies to hire me. This arrangement simplifies contracts, invoicing, and tax considerations—no international payment complications or tax headaches.

Convenient Timezone

Based in Mexico City, I work in a timezone that aligns perfectly with U.S. business hours. This means real-time collaboration with your team, immediate responses, and no delays waiting for overseas contractors to start their day.

Direct Experience & Integrity

I worked in the U.S. for years and understand the work culture, expectations, and high standards required. This experience gives me unique insight into what American companies need and expect from their technical talent.

I self-deported because I believe in following the law—my integrity is non-negotiable. This same principle guides my work: I deliver what I promise, maintain transparency, and uphold the highest ethical standards.

Cost-Effective Expertise

I offer superior skills compared to 99% of American-based hires, at a fraction of the cost when you include benefits and employment costs. With professional experience dating back to 1997, my extensive work with companies like Intel, X, and Uber demonstrates my ability to deliver at the highest levels.

You don't have to worry about benefits, office space, or overhead—just pay for results. This arrangement eliminates the substantial costs associated with full-time employees while providing access to elite, senior-level expertise with over 25 years of professional experience.

Transparent Productivity & Work Ethic

I propose a setup where a laptop at a desk in your office shows my screen, live, via Zoom or Teams. This transparency ensures you can see exactly what I'm working on and how I'm progressing.

Virtual "In-Office" Presence

Virtual in-office presence

I offer a simple, transparent solution for remote work: provide a laptop with screen sharing software, and I'll be visibly working each morning—camera on, fully engaged, delivering consistent productivity.

You'll see that I'm working harder, longer, and delivering more than my American counterparts. My dedication to excellence and efficiency means you get more value for your investment. It's my promise to you!

Seamless Integration & Availability

I work in your time zone and can be available whenever you need. This eliminates the communication delays and scheduling challenges often associated with offshore contractors.

I integrate smoothly with your team using the same tools and workflows. My experience with diverse development environments means I can adapt quickly to your specific processes and technologies.

Risk-Free Trial

Give me a short contract to prove my value—if you're not happy, no obligation to continue. This trial period allows you to evaluate my skills, work ethic, and fit with your team before making a longer-term commitment.