Senior Backend Engineer

Key Responsibilities

• Developing backend services for a grocery storefront, including catalog, categories, search, PDP, cart, and checkout.
• Working with large catalogs and assortments that depend on a specific store, warehouse, or user location.
• Handling frequently changing prices, inventory, discounts, and product availability.
• Validating the cart before checkout, including prices, availability, quantity limits, minimum order value, and store restrictions.
• Supporting grocery-specific scenarios such as weighted products, unavailable items, and substitutions.
• Integrating with catalog, pricing, inventory, order, payment, and delivery services.
• Onboarding grocery partners with different APIs and data models.
• Ensuring low latency, high availability, and resilience of customer-facing flows.

Skills, Knowledge & Expertise

• 5+ years of commercial backend engineering. With experience solving complex problems in high-load environments
• Strong knowledge of Go programming language. Knows and has applied advanced features of the Go language in practice
• Strong SQL knowledges, including designing schemas, scaling strategies (replication, partitioning, sharding) and query optimisation for high-load environment
• In-depth knowledge of Redis, familiar with various data structures, and its efficient use in high-load systems
• Experience working with Docker, understanding CI/CD pipelines. Knows how work k8s (or analogs) and cloud infrastructure (like AWS)
• Experience with synchronous and asynchronous inter-service communication patterns, with a focus on reliability in high load environment
• Knows main microservice architecture patterns. Deep understanding of how to build efficient interactions between client and server applications, knows limitations
• Proven ability to design and implement a full observability strategy, including metrics, logging, dashboards, and tracing
• An interest in new technologies, a collaborative spirit, and a drive to continuously develop your skills

Benefits

• Help us challenge injustice by creating fair choices for millions of people across 48 countries.
• Develop your professional skills with access to mentoring, career consulting, and learning programs
• Collaborate with teams around the world and gain international experience through our Global Talent Exchange Program
• Engage in company-wide challenges, awards, sports activities, employee-led social impact and volunteering projects
• Work alongside people who take initiative, speak openly, and challenge themselves to grow
• Improve your language skills through co-financed courses and internal speaking clubs
• Annual salary from 70 700 EUR gross