We are still looking for the very Top Talent…and we would be delighted if you were to join our team!

More in detail, UST is a multinational company based in North America, certified as a Top Employer and Great Place to Work , with more than 35,000 employees worldwide and presence in over 35 countries . We are leaders in digital technology services, providing large-scale technological solutions to major integral organizations.

What we look for?

We are currently looking for an Application Responsible (AR) & System Architect to join a strategic project in the banking sector, working with a critical internal application based on the Actico Rules technology stack.

- Take end-to-end ownership of a critical business application, ensuring availability, stability, and performance.
- Act as the main point of contact for operational, technical, and functional stakeholders.
- Perform application health checks, performance tuning, and capacity planning activities.
- Coordinate incident management, change requests, and risk assessments.
- Collaborate with development and infrastructure teams to resolve issues and deliver enhancements.
- Maintain accurate application documentation, runbooks, and service records.
- Drive application lifecycle activities, including modernization, rationalization, or decommissioning initiatives.
- Validate technical requirements and non-functional requirements (NFRs).
- Collaborate with Enterprise Architects on solution design and architecture evolution.
- Ensure compliance with security standards, cloud-first strategies, and integration guidelines.
- Identify technical debt, scalability challenges, and modernization opportunities.
- Promote the adoption of reusable enterprise services and best practices.
- Degree in Computer Science, Engineering, or a related discipline.




- Proven experience supporting front-office and/or middle-office banking applications.

Strong knowledge of:

- Application monitoring tools
- Database schema design, SQL, query optimization, and log analysis
- Jira or similar ticketing tools
- Practical understanding of enterprise architecture principles and secure design patterns.
- Hands-on experience with Java-based systems and development environments.
- Experience with Oracle Database and SQL.
- Knowledge of Actico platform operations.
- Strong analytical and problem-solving skills.
- Excellent communication and stakeholder management capabilities.
- Ownership mindset, proactive attitude, and teamwork orientation.
- Professional English communication skills
- Experience within Compliance or Regulatory domains.
- Certifications or training related to Visual Rules / Actico Rules.
- Experience in cloud migration initiatives.
- Knowledge of observability, API design, and modern integration architectures.

What can we offer?

- 23 days of Annual Leave plus the 24th and 31st of December as discretionary days!
- Numerous benefits (Health Care Plan, Internet Connectivity, Life and Accident Insurances).
- Free access to several training platforms.
- Professional stability and career plans.
- UST also compensates referrals from which you could benefit when you refer professionals.
- The option to pick between 12 or 14 payments along the year.
- Real Work Life Balance measures (flexibility, WFH or remote work policy, compacted hours during summertime…)
- UST Club Platform discounts and gym access discounts.

At UST , we are committed to equal opportunities in our selection processes and do not discriminate based on race, gender, disability, age, religion, sexual orientation, or nationality. We have a special commitment to Disability & Inclusion, and we are interested in hiring professionals with a disability certificate.

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📌 Application Responsible (AR) & System Architect (Actico Rules) - Hybrid
🏢 UST España & Latam
📍 Madrid