Senior Data Engineer - Real Time Streams at Globaldev Group in Armenia

You will be a senior engineer on the team that owns the real-time data platform. The platform turns operational events (orders, driver locations, geofence transitions, shifts, MQTT session events) into live analytics, routing inputs, and warehoused data across Postgres/TimescaleDB, ClickHouse, and BigQuery. You will own the platform end-to-end: design, implementation, deployment, and production operation of the streaming jobs, CDC pipelines, Kafka Connect bridges, and downstream sinks that move this data.

Responsibilities

• Designing, implementing, and operating stateful Apache Flink streaming pipelines: keyed state, windowing, watermarks, timers, side outputs, custom sources/sinks.

• Designing, developing, deploying, and maintaining Change Data Capture (CDC) pipelines using Flink CDC or Debezium, moving operational database changes into the streaming platform with correct snapshot/incremental handling, schema evolution, and downstream idempotency.

• Building and operating Kafka and Kafka Connect pipelines: topic and partition design, source/sink connectors in distributed mode, schema and converter management, and deadletter routing.

• Owning the path from Kafka → Flink → Postgres / TimescaleDB / ClickHouse / BigQuery, including schema design, idempotency strategy, batch tuning, and observability.

• Diagnosing and fixing production issues: checkpoint failures, backpressure, state growth, sink slowness, autoscaler oscillation, restart loops.

• Hardening the platform: delivery guarantees, watermarks, DLQ handling, schema migrations, alerting coverage. * Code reviews and mentoring mid-level engineers.

• Contributing to the deployment side: Helm charts, ArgoCD applications, GKE configuration, Grafana dashboards, Prometheus alert rules.

• Influencing direction: state backend choices, schema migrations, when a pipeline needs to be split or rebuilt.

Requirements

• 5+ years of professional software/data engineering experience, with strong Java expertise.

• Production experience with Apache Flink and stateful real-time streaming pipelines.

• Strong Apache Kafka experience, including Kafka Connect, consumer groups, partitions, delivery guarantees, and schema management.

• Hands-on CDC experience using Debezium or Flink CDC.

• Experience designing and operating Kafka → Flink → database/data warehouse pipelines in production.

• Strong understanding of PostgreSQL and experience with at least one analytical database such as ClickHouse or BigQuery.

• Experience with Kubernetes and deploying/operating production data workloads.

• Proven ability to troubleshoot and optimize production streaming systems—backpressure, checkpoint failures, state growth, latency, lag, and sink performance.

• Strong understanding of data consistency, idempotency, schema evolution, and observability.

• Ability to work independently and own a data platform component end-to-end, from design through production operation.

Will be a plus

• Experience with TimescaleDB, hypertables, and time-series data.

• Experience with PostGIS and geospatial/spatial query optimization.

• Deep ClickHouse performance tuning, including MergeTree and partitioning strategies.

• Strong BigQuery optimization and data modeling experience.

• Experience with Flink Kubernetes Operator and Flink autoscaler tuning.

• Experience with ArgoCD, Helm, GKE, Prometheus, and Grafana.

• Experience designing high-throughput, low-latency real-time systems at scale.

• Experience with MQTT or IoT/event-driven systems.

• Knowledge of Kafka Schema Registry, Avro/Protobuf, and advanced schema evolution.

• Experience mentoring engineers and leading technical decisions around streaming architecture.

• Experience with routing, logistics, delivery, mobility, or location-based platforms would be particularly relevant.

What we offer

• 20 days of paid vacation, 5 sick days, and public holidays.

• Flexible schedule with a high level of autonomy.

• Opportunity to influence product and technical decisions.

• Professional growth and learning opportunities.

• Comfortable working environment with a supportive team.