We are looking for a **Lead Full\-stack Java Engineer** to spearhead the architecture, creation, and maintenance of omni\-channel Payment and Marketplace APIs that improve user interactions and system connectivity. You will engage with diverse teams to develop scalable, secure, and dependable enterprise software solutions. Join us to innovate and deliver valuable applications for our clients. **Responsibilities** * Create, implement, and deliver advanced features for omni\-channel Payment and Marketplace APIs * Produce secure, high\-standard production code and engage in peer code assessments * Liaise with onsite teams to coordinate tasks and communicate progress * Manage the complete technology stack from enterprise systems to databases * Partner with architects, DevOps, networking teams, project and product managers, QA, and technical leaders * Assist in system design emphasizing architecture, security, scalability, dependability, and performance * Participate in sprint cycles to ensure punctual delivery with minimal delays * Quickly grasp business domains of dotcom and retail channels * Track, diagnose, isolate, and address technical challenges proactively to avoid business disruptions * Handle incident tickets within required service level agreements **Requirements** * Proven expertise (5\+ years) in designing, developing, and deploying enterprise\-grade solutions * Advanced knowledge of Java/J2EE, Spring Core, microservices, and Spring Boot frameworks * Comprehensive experience in full\-stack development utilizing ReactJS, Node.js, and JavaScript * Demonstrated capability to design, construct, deploy, and manage RESTful APIs with JSON and GraphQL * Practical experience with cloud microservices architecture, especially on Microsoft Azure * Background in breaking down monolithic applications into microservices * Familiarity with service mesh tools like Istio and client\-side load balancing with Feign * Knowledge of monitoring and alerting systems such as Splunk, Nagios, Grafana, and AppDynamics * Experience with message queuing, caching, and streaming technologies including Kafka and Coherence * Proficiency with SQL and NoSQL databases including MySQL and MS SQL * Strong problem\-solving and debugging abilities to identify and fix performance issues * Experience using DevOps tools like GitHub, Jenkins, JMeter, ArgoCD, and Artifactory * Ability to work autonomously and effectively in a fast\-moving agile setting * Bachelor’s or Master’s degree in Computer Science or related discipline * Excellent communication skills with English proficiency at B2 Upper\-Intermediate level **Nice to have** * Familiarity with Apigee API management platform * Experience with Node.js backend development * Knowledge of AI tools such as Vibe coding * Understanding of MCP servers and GitHub workflow processes * Experience with cloud\-native logging and monitoring tools in Azure environment **We offer** * Career plan and real growth opportunities * Unlimited access to LinkedIn learning solutions * Constant training, mentoring, online corporate courses, eLearning and more * English classes with a certified teacher * Support for employee’s initiatives (Algorithms club, toastmasters, agile club and more) * Enjoyable working environment (Gaming room, napping area, amenities, events, sport teams and more) * Flexible work schedule and dress code * Collaborate in a multicultural environment and share best practices from around the globe * Hired directly by EPAM \& 100% under payroll * Law benefits (IMSS, INFONAVIT, 25% vacation bonus) * Major medical expenses insurance: Life, Major medical expenses with dental \& visual coverage (for the employee and direct family members) * 13 % employee savings fund, capped to the law limit * Grocery coupons * 30 days December bonus * Employee Stock Purchase Plan * 12 vacations days * Official Mexican holidays, plus 5 extra holidays (Maundry Thursday and Friday, November 2nd, December 24th \& 31st) * Monthly non\-taxable amount for the electricity and internet bills EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi\-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting\-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential. *By applying to our role, you are agreeing that your personal data may be used as in set out in EPAM´s Privacy Notice and Policy.*