Senior QA Engineer, IMF at Bloomreach

Bloomreach is building the world’s premier agentic platform for personalization.We’re revolutionizing how businesses connect with their customers, building and deploying AI agents to personalize the entire customer journey. • We're taking autonomous search mainstream, making product discovery more intuitive and conversational for customers, and more profitable for businesses. • We’re making conversational shopping a reality, connecting every shopper with tailored guidance and product expertise — available on demand, at every touchpoint in their journey. • We're designing the future of autonomous marketing, taking the work out of workflows, and reclaiming the creative, strategic, and customer-first work marketers were always meant to do. And we're building all of that on the intelligence of a single AI engine — Loomi AI — so that personalization isn't only autonomous…it's also consistent.From retail to financial services, hospitality to gaming, businesses use Bloomreach to drive higher growth and lasting loyalty. We power personalization for more than 1,400 global brands, including American Eagle, Sonepar, and Pandora.We are looking for a dedicated QA Engineer to join our IMF team and take ownership of quality across our in-memory database (IMF) and its surrounding services. IMF is a complex, distributed system built on Kubernetes and Google Cloud Platform that stores user events and profiles and performs real-time analyses with very low latency. It spans multiple technology stacks (C++, Go, Python), communicates over gRPC and Kafka, and runs in a high-availability configuration across tens of instances. You will be the first QA engineer embedded in this team, giving you the opportunity to shape the QA culture, processes, and tooling from the ground up. You won't be doing this alone — you'll have the support of the team, other embedded QA engineers across the organization, and a central QA chapter to exchange ideas and best practices with. Your goal is to increase the speed and confidence of development by ensuring that engineers have clear guidance on what to test, that regressions are caught early, and that we can safely validate changes at production scale. IMF powers real-time analytics for more than 1,400 global brands — the quality of this system directly impacts our customers. The team works remotely in the Central European Time Zone. We are happy to meet you in Bratislava, Brno or Prague, where our headquarters are located. Responsibilities • Define and own the QA strategy for the IMF ecosystem end-to-end — from data ingestion through storage and computation to the clients consuming the results. • Plan and execute QA for new features: create test plans during project kickoff, participate in backlog and tasks refinement and technical design discussions, and identify the right testing approach for each change. • Build and maintain automated test suites and tooling integrated into our CI/CD pipelines — including test data generation, automated comparison of expected vs. actual results, and test environment management — so that every merge request gets reliable, fast feedback. • Establish quality practices and processes across the team: define testing guidelines, set testing expectations in the Definition of Done, bring visibility into test coverage across components, track quality metrics, and ensure QA is involved from the start of feature work so that quality becomes a shared team responsibility. • Design and execute production-scale testing and support safe release strategies: validate latency, throughput, memory, and CPU behavior under realistic and peak traffic conditions, and leverage techniques such as shadow deployments, canary rollouts, and comparison tooling to validate changes with confidence before full rollout. • Collaborate within a multi-expertise team spanning C++, Go, and Python engineers as well as SRE/DevOps — and bring the quality perspective into technical design, code reviews, and deployment decisions. • Coordinate with central QA and other QA engineers across the organization — share best practices, align on tooling and frameworks, and participate in the global QA chapter. Qualifications Must-have • Proven experience as a QA Engineer working with complex, distributed backend systems (not primarily UI/frontend testing). • Ability to design a test strategy for a multi-component system and identify the right types and levels of testing for each area. • Hands-on experience with test automation and integrating automated tests into CI/CD pipelines. • Experience with scripting and tooling in Python, Go, or Shell for test automation, data generation, and validation. • Strong communication and collaboration skills — you will work within a multi-expertise team spanning several technology stacks and need to drive quality practices proactively. • Ability to work independently and take ownership — you will be the first QA engineer on the team and will shape the QA direction. Nice-to-have • Ability to reason about data correctness, consistency, and integrity in systems that process and store large volumes of data. • Experience with performance and load testing — designing benchmarks, measuring latency/throughput, and identifying bottlenecks. • Comfortable working with Kubernetes and cloud infrastructure (GCP or similar) — deploying and testing services in containerized environments. • Experience with gRPC-based services and testing inter-service communication. • Familiarity with Kafka and event-driven architectures — understanding message flows, ordering, and partitioning. • Experience with safe release strategies: shadow traffic, canary deployments, feature flags, old-vs-new comparison. • Familiarity with observability tools (Grafana, VictoriaMetrics, Sentry, or similar) for monitoring test results and system behavior. Our Stack • Languages: C++, Go, Python, Scala • Messaging: Apache Kafka • Communication: REST, gRPC, Protocol Buffers • Infrastructure: Kubernetes (GKE), Google Cloud Platform • Databases: MongoDB, Redis • Monitoring: Prometheus, Influx, VictoriaMetrics, Grafana, Sentry • CI/CD: GitLab Your Success Story First 30 Days • Get to know the team, the product, and how IMF fits into the broader Bloomreach platform. • Learn about the system architecture: data flow from ingestion through storage and computation to the clients consuming analytical results. • Understand existing test coverage — what is tested, what is not, and where the biggest gaps and risks are. • Start participating in team ceremonies (planning, syncs, grooming) and build relationships with engineers across all technology stacks. • Connect with other QA engineers in the organization and the central QA chapter. First 90 Days • Deliver your first test plans for active projects, integrated into the team's grooming and development workflow. • Establish initial automated test suites for the highest-risk areas and integrate them into CI/CD pipelines. • Introduce QA practices into the team's development process — Definition of Done, MR checklists, test expectations, and coverage visibility. • Begin building tooling for test data generation and result comparison. • Participate in validating at least one significant feature or infrastructure change with structured testing. First 180 Days • Own a comprehensive QA strategy for the IMF ecosystem, covering automation, tooling, and production-scale testing approaches. • Have robust automated test suites running as part of every release pipeline, giving the team confidence in their changes. • Establish performance testing baselines and regular benchmarks that catch regressions in latency, throughput, and resource usage. • Drive the adoption of safe release strategies (shadow deployments, canary rollouts, comparison tooling) for major changes. • Have established yourself as a trusted quality partner within the team — engineers increasingly know what to test, how to test it, and have the tools and confidence to ship faster. #LI-KP1 More things you'll like about Bloomreach: Culture: • A great deal of freedom and trust. At Bloomreach we don’t clock in and out, and we have neither corporate rules nor long approval processes. This freedom goes hand in hand with responsibility. We are interested in results from day one. • We have defined our 5 values and the 10 underlying key behaviors that we strongly believe in. We can only succeed if everyone lives these behaviors day to day. We've embedded them in our processes like recruitment, onboarding, feedback, personal development, performance review and internal communication. • We believe in flexible working hours to accommodate your working style. • We work virtual-first with several Bloomreach Hubs available across three continents. • We organize company events to experience the global spirit of the company and get excited about what's ahead. • We encourage and support our employees to engage in volunteering activities - every Bloomreacher can take 5 paid days off to volunteer*. • The Bloomreach Glassdoor page elaborates on our stellar 4.4/5 rating. The Bloomreach Comparably page Culture score is even higher at 4.9/5 Personal Development: • We have a People Development Program -- participating in personal development workshops on various topics run by experts from inside the company. We are continuously developing & updating competency maps for select functions. • Our resident communication coach Ivo Večeřa is available to help navigate work-related communications & decision-making challenges.* • Our managers are strongly encouraged to participate in the Leader Development Program to develop in the areas we consider essential for any leader. The program includes regular comprehensive feedback, consultations with a coach and follow-up check-ins. • Bloomreachers utilize the $1,500 professional education budget on an annual basis to purchase education products (books, courses, certifications, etc.)* Well-being: • The Employee Assistance Program -- with counselors -- is available for non-work-related challenges.* • Subscription to Calm - sleep and meditation app.* • We organize ‘DisConnect’ days where Bloomreachers globally enjoy one additional day off each quarter, allowing us to unwind together and focus on activities away from the screen with our loved ones. • We facilitate sports, yoga, and meditation opportunities for each other. • Extended parental leave up to 26 calendar weeks for Primary Caregivers.* Compensation: • Restricted Stock Units or Stock Options are granted depending on a team member’s role, seniority, and location.* • Everyone gets to participate in the company's success through the company performance bonus.* • We offer an employee referral bonus of up to $3,000 paid out immediately after the new hire starts. • We reward & celebrate work anniversaries -- Bloomversaries!* (*Subject to employment type. Interns are exempt from marked benefits, usually for the first 6 months.) Excited? Join us and transform the future of commerce experiences! If this position doesn't suit you, but you know someone who might be a great fit, share it - we will be very grateful! Any unsolicited resumes/candidate profiles submitted through our website or to personal email accounts of employees of Bloomreach are considered property of Bloomreach and are not subject to payment of agency fees. #LI-Remote