Senior Platform Engineer – Store Operations

The Senior Platform Engineer – Store Operations is responsible for ensuring the stability, performance, and continuous improvement of the technology platforms that power our retail stores.

This role serves as a technical expert for store-level systems, integrations, and data flows, working closely with product, delivery, and operations teams to maintain seamless store operations. The ideal candidate combines strong technical expertise—especially in SQL databases and systems integration—with excellent problem-solving skills, proactive communication, and a customer-centric mindset. This role is critical in supporting mission-critical store technologies such as POS, inventory systems, pricing engines, labor platforms, and store IoT/automation solutions.

Key Competencies:

• Customer-Centric Mindset: Focused on delivering stable, reliable tools to store teams
• Ownership & Accountability: Takes initiative in identifying and solving platform issues
• Collaboration: Works well across technical and operational teams
• Problem Solving: Able to analyze complex issues quickly and provide data-driven solutions
• Adaptability: Comfortable in fast-paced, high-change retail environments

Responsibilities

• Monitor, maintain, and optimize store-level platforms to ensure high availability and performance
• Provide Tier 2 technical support for store operations teams, troubleshooting issues related to data flows, system performance, and integrations
• Collaborate with vendors and internal teams to resolve platform incidents and minimize disruption to store operations
• Understanding relational databases, including writing and optimizing queries, performing data validation, and supporting ETL processes
• Develop a strong understanding of integration patterns (API-based, event-driven, flat-file, message queues, real-time vs. batch) to support new and existing system connections
• Work closely with engineering teams to implement and validate integrations between store systems and enterprise platforms
• Ensures stability of the system, provides guidance in new implementations
• Contribute to continuous improvement of deployment pipelines and operational processes
• Implement and enhance monitoring, alerting, and observability tools to proactively identify performance issues
• Participate in on-call rotation for critical store systems
• Contribute to root-cause analysis and the development of long-term stability improvements
• Act as a bridge between delivery, product, and business, ensuring technical issues are clearly communicated
• Document system flows, operational procedures, troubleshooting guides, and knowledge bases
• Provide training and technical guidance to cross-functional teams when needed

Requirements

• Bachelor's degree in Computer Science, Engineering, Information Systems, or equivalent practical experience
• Strong SQL skills (query writing, joins, performance tuning, data validation, troubleshooting)
• Solid understanding of system integration methods (REST/SOAP APIs, message queues, flat-file transfer, ETL pipelines, event-driven architectures)
• Experience supporting distributed systems or platforms at scale
• Strong analytical and diagnostic skills with the ability to troubleshoot in complex, multi-system environments
• Excellent verbal and written communication skills, with the ability to explain technical issues to non-technical audiences
• Proficient in English language

Nice to have

• Experience supporting technologies in retail, grocery, or high-volume operational environments
• Familiarity with cloud environments (AWS, Azure, or GCP)
• Experience with monitoring tools
• Knowledge of POS systems, inventory platforms, or store workforce/operations tools
• Exposure to DevOps practices and CI/CD processes

We offer

• For your comfortable work:
• Remote and hybrid work opportunities
• Option to work from our centrally located office in Athens
• Corporate laptop provided
• Private health insurance
• Meal vouchers / restaurant tickets
• My Benefit card (264€/year)
• Monthly public transportation card
• For your growth:
• Global and diverse client portfolio, large-scale projects, and trendy technologies
• Diverse multicultural, multi-functional, and multilingual work environment
• Opportunity to contribute to internal and open-source products
• Outstanding career development opportunities with a transparent career path and a roadmap to accelerate your journey
• Possibility to create a Personal Development Plan from the first day in the company
• Numerous opportunities for self-development: hard & soft skills internal training courses, mentoring programs, and unlimited access to LinkedIn Learning courses, external e-Libraries
• Certification opportunities
• Knowledge-sharing with colleagues from EPAM's global tech and non-technical communities
• Language courses

EPAM strives to provide its global team of over 61,700 professionals in more than 55 countries with opportunities for professional growth from day one of collaboration. Our colleagues are the source of EPAM's success, so we value cooperation, strive to always understand our clients' business and aim for the highest quality standards. No matter where you are, you will join a dedicated, diverse community that will help you realize your potential to the fullest.