Mainframe Developer (Assembler / COBOL)

DaCodes; Ciudad de México; A distancia; MXN 400,000 - 600,000; Jornada completa

Descripción de la vacante

A leading software firm in Mexico is seeking an experienced developer specializing in Assembler. You will develop and maintain core applications while collaborating with a highly technical team. Ideal candidates will have at least 7 years of experience in Assembler and expertise in z/OS. The role offers remote work opportunities, competitive benefits, and a supportive work environment.

Servicios

Major medical insurance

Life insurance

Access to courses and certifications

Career opportunities across business lines

Meetups with IT industry guests

Birthday off

English classes

Virtual integration events

Formación

• 7+ years of recent, hands-on experience in Assembler.
• 3–4+ years of experience in COBOL or C/C++.
• Strong expertise in z/OS and JCL (minimum 5 years of mainframe experience).
• Excellent problem-solving, debugging, and analytical skills.
• Ability to work independently with minimal supervision.

Responsabilidades

• Develop, maintain, and extend core applications written in Assembler.
• Collaborate with a highly technical team to ensure stability and performance of mission-critical systems.
• Debug and troubleshoot complex applications on z/OS, TSO, and Unix System Services.

Conocimientos

Assembler

COBOL

C/C++

z/OS

JCL

English (intermediate to advanced)

Descripción del empleo

Work at DaCodes!
We are a firm of software and digital transformation experts delivering high-impact solutions. For 10 years, we have built technology and innovation-driven products thanks to our team of +220 talented #DaCoders, including developers, architects, UX/UI designers, PMs, QA testers, and more. Our team collaborates on projects with clients across LATAM and the United States, consistently achieving outstanding results.

At DaCodes, you’ll have the opportunity to accelerate your professional development, work on diverse projects across industries, and contribute to the design, implementation, and optimization of cloud infrastructures. Our DaCoders play a key role in the success of both our business and our clients. You will be the expert contributing to our projects while gaining exposure to disruptive startups and global brands. Interested?

REQUIREMENTS

Key Responsibilities

• Develop, maintain, and extend core applications written in Assembler.
• Collaborate with a highly technical team to ensure stability and performance of mission-critical systems.
• Debug and troubleshoot complex applications running on z/OS, TSO, and Unix System Services (USS).
• Work with legacy codebases while also contributing ideas for modernization initiatives.
• Provide clear and timely communication on incidents, troubleshooting, and project updates.

Desired Profile

• 7+ years of recent, hands-on experience in Assembler (critical requirement).
• 3–4+ years of experience in COBOL or C/C++.
• Strong expertise in z/OS and JCL (minimum 5 years of mainframe experience).
• Excellent problem-solving, debugging, and analytical skills.
• Ability to work independently with minimal supervision.
• Intermediate to advanced English (written and spoken).

Nice to Have

• Combined experience with both COBOL and C/C++.
• Background in large enterprise environments (banking, government, healthcare, logistics, etc.).
• Exposure to modernization strategies for legacy systems.

Additional Details

• Location: Remote, LATAM.
• Timezone: US/Eastern.

🚀 Integration with global brands and disruptive startups.

🏡 Remote work / Home office.

📍 If hybrid or on-site work is required, you will be informed from the first session.

⏳ Work schedule aligned to the assigned project/team.

📅 Monday to Friday work schedule.

🎉 Day off on your birthday.

🏥 Major medical insurance (apply to Mexico).

🛡️ Life insurance (apply to Mexico).

🌎 Multicultural work teams.

🎓 Access to courses and certifications.

📢 Meetups with special guests from the IT industry.

📡 Virtual integration events and interest groups.

📢 English classes.

🏆 Career opportunities across our different business lines.

🏅 Proudly certified as a Great Place to Work.