Senior Database Administrator (MongoDB)

We are seeking a Senior Database Administrator to lead the design, implementation and optimization of robust, scalable MongoDB environments.This role requires deep technical expertise, leadership in complex database operations and a collaborative approach to working with cross-functional teams to ensure high availability and performance.ResponsibilitiesArchitect, implement and manage large-scale MongoDB deployments including replica sets and sharded clustersDrive performance tuning, query optimization, indexing strategies and workload analysisLead backup/restore strategy design, disaster recovery planning, point-in-time recovery and high availability configurationsSupport major upgrade activities, schema design improvements, version migrations and cloud migrationsTroubleshoot complex issues related to locking, replication lag, sharding balancer and storage performanceImplement monitoring, alerting and automation to improve operational efficiencyProvide mentoring and support to L1/L2 DBAs and contribute to best practices and documentationCollaborate with development and DevOps teams on data modeling, release management and integrationRequirements6+ years of hands-on experience as a MongoDB DBA managing large and critical production environmentsDeep understanding of MongoDB internals such as replication internals, sharding architecture, chunk migration, balancer tuning and WiredTiger storage engineExpertise in performance tuning, analyzing execution plans and optimizing queries and indexesHands-on experience with replica set and sharded cluster problem diagnosis and resolutionSolid knowledge of Linux, scripting (Shell or Python) and automation frameworksExperience with monitoring and observability tools for MongoDBBasic knowledge of at least one additional RDBMS such as Oracle, MS SQL, PostgreSQL or MySQLNice to haveStrong experience with GCP, AWS or Azure cloud database servicesHands-on experience with MongoDB Atlas, multi-cloud clusters, encryption-at-rest and security controlsExposure to Kafka, microservices and high-volume data streaming workloadsExperience building internal tooling or automation for database deployment and monitoringKnowledge of Infrastructure-as-Code such as Terraform or AnsibleWe offer/BenefitsWe gather like-minded people:Engineering community of industry professionalsFriendly team and enjoyable working environmentFlexible schedule and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Outstanding career roadmapLeadership development, career advising, soft skills, and well-being programsCertification (GCP, Azure, AWS)Unlimited access to LinkedIn Learning, Get Abstract, Cloud GuruEnglish classesWe cover it all:Stable income (Employment Contract or B2B)Participation in the Employee Stock Purchase PlanBenefits package (health insurance, multisport, shopping vouchers)Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and moreReferral bonusesCorporate, social and well-being eventsPlease, note:The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview.We will reach out to selected candidates exclusively.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.