Sr Java Backend Developer

Java21 Back-Engineer – Ad Platforms (Remote in Mexico, Brazil or Colombia)

Work with top-tier engineers on mission-critical systems for global-scale ad operations.

We’re hiring a Java-21 Dev-Engineer to join our growing team. You’ll be part of the Billing team, a core area handling high-throughput financial operations that directly impact global advertising services.

Working hours must fully overlap with 9AM–6PM Central Time

Project Overview:

Join a cross-functional team experts to build and maintain reliable systems at scale. You’ll design backend services that support our billing infrastructure, ensuring real-time performance, data integrity, and system resilience.

Responsibilities

• 
  Design and implement scalable backend services with Java21 and Dropwizard

• Develop and maintain robust RESTful APIs

• Optimize and manage Oracle 12 and Cassandra databases

• Integrate services using Apache Kafka in an event-driven architecture

• Monitor and maintain system health and performance

• Write unit tests with JUnit and participate in code reviews

• Collaborate closely with frontend, QA, and product teams

Requirements

Tech Stack:

• Languages: Java-21

• Frameworks: Dropwizard

• Databases: Oracle 12, Cassandra

• Messaging: Apache Kafka

• Cloud/Infra: AWS (EKS, ALB, S3)

• Testing: JUnit

Nice to have

Soft Skills We Value:

• Ownership: You think beyond code and care about the system as a whole

• Proactiveness: You anticipate issues and offer solutions

• Teamwork: You communicate clearly, support peers, and welcome feedback

We offer

• 100% payroll scheme, benefits by law (IMSS, INFONAVIT, 12+ vacation days)
• Benefits above the law: Vacation premium 50%, 5 PTOs, 3 sick days, 10 guaranteed public holidays per year
• Major medical insurance, Dental and Vision plan for an employee and direct family members
• Minor Medical Insurance (Multiservicios Médicos Santander) for an employee and direct family members
• Life Insurance and funeral expenses
• 5% savings fund, uncapped (matched by the company in the end of the year)
• Grocery cards/vouchers (Vales de Despensa)
• 30 days End of the Year Bonus (Aguinaldo)
• Opportunity to work on bleeding-edge projects with a highly motivated and dedicated team all over the world
• Individual career development plan and support from the best experts
• Professional development opportunities (Linkedin Learning, Cloud certification programs, access to corporate LMS integrated with other learning platforms)
• Well-equipped office in a business area of Guadalajara (quiet room, games room, air hockey, PS5, Nintendo Switch and Xbox Series X, pool table, ping pong, snacks, smoothies, and much more)
• Corporate social events (yoga, massages, sport tournaments, discussion panels, technical talks, lunch & learns)
• Flexible working hours
• Opportunity to relocate to another country where the company's offices are present.

About us
Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.