At Sequoia Connect, we are a Talent-First Technology Ecosystem that redefines how elite professionals interact with the global digital landscape.

We move beyond traditional models to act as a catalyst for the top 1% of global talent, connecting human potential with complex industrial execution.

By joining our inner circle, you are not simply taking a position; you are aligning with a strategic partner dedicated to updating your Human OS and accelerating your growth through world-class, high-impact projects.

We are currently partnering with a integral IT powerhouse that represents the connected world through innovative, customer-centric experiences.

As a USD 6 billion organization and one of the top 7 IT service providers globally, our client empowers over 1,200 global customers—including several Fortune 500 companies—to Rise™.

With a massive network of 163,000+ professionals across 90 countries, they are at the absolute forefront of digital transformation, leveraging next-generation technologies such as 5G, AI, Blockchain, and Quantum Computing.

This is your chance to thrive in a workplace recognized as one of the most sustainable corporations in the world.

You will join an environment that values innovation and societal impact, working on end-to-end digital transformation projects for global leaders.

If you are a driven professional looking for global career opportunities and exposure to high-impact projects within an international network of expertise, this is where you belong.

We are currently searching for a Tandem Developer:

Responsibilities

- Design, develop, and maintain backend components on HPE NonStop (Tandem), adhering strictly to change control practices, coding standards, and platform-specific performance considerations (I/O, locking, concurrency).




- Analyze and resolve complex defects in legacy systems, performing transaction traceability, fault diagnosis, and corrective adjustments with minimal impact to ensure data integrity and operational continuity.
- Implement and maintain integrations with external systems using available NonStop mechanisms (services, flat files, message queues, TCP/IP sockets, processes), guaranteeing data validation, error handling, and traceability.
- Query, tune, and adjust NonStop databases (SQL/MP, SQL/MX, Enscribe), optimizing queries, structures, and access paths to maintain optimal response times and stability under heavy transactional loads.
- Document transaction flows, business rules, integration contracts, and operating procedures.
- Collaborate effectively with modern engineering teams (e.g., Java/Kafka environments) to map core system data and business rules into canonical models for enterprise-wide use.
- Automate repetitive operational and maintenance tasks using scripting and standard utilities within the NonStop ecosystem.

Requirements

- Design, develop, and maintain backend components on HPE NonStop (Tandem), adhering strictly to change control practices, coding standards, and platform-specific performance considerations (I/O, locking, concurrency).
- Banking Sector Experience: 3+ years of experience working within the banking or financial services industry, understanding its rigorous standards for security and transactional integrity.




- Analyze and resolve complex defects in legacy systems, performing transaction traceability, fault diagnosis, and corrective adjustments with minimal impact to ensure data integrity and operational continuity.
- Implement and maintain integrations with external systems using available NonStop mechanisms (services, flat files, message queues, TCP/IP sockets, processes), guaranteeing data validation, error handling, and traceability.
- Query, tune, and adjust NonStop databases (SQL/MP, SQL/MX, Enscribe), optimizing queries, structures, and access paths to maintain optimal response times and stability under heavy transactional loads.
- Document transaction flows, business rules, integration contracts, and operating procedures.
- Collaborate effectively with modern engineering teams (e.g., Java/Kafka environments) to map core system data and business rules into canonical models for enterprise-wide use.
- Automate repetitive operational and maintenance tasks using scripting and standard utilities within the NonStop ecosystem.

Desired

- Experience collaborating on modernization projects (e.g., bridging legacy Tandem systems with modern Java/Kafka event-driven architectures).
- Familiarity with cloud-native foundations or AI coding assistants.

Languages

- Advanced Oral English.
- Advanced Spanish.

Note:

- Hybrid

If you meet these qualifications and are pursuing new challenges, start your application on our website to join an award-winning employer.

Explore all our job openings | Sequoia Career’s Page:

Keywords:
Tandem NonStop, HP NonStop, Guardian, OSS, Pathway, COBOL, TAL, Java SE, SQL/MP, SQL/MX, SOAP, REST, Serverclass, Webgate, Banking, Legacy Modernization.
None

Required Skill Profession

Computer Occupations

📌 Tandem Developer (Ciudad de México)
🏢 Sequoia Connect
📍 Ciudad de México