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Data Engineering

Real-Time Data Streaming That Delivers Insights in Seconds

Numlytics builds production-grade real-time data streaming pipelines for enterprises across the US, UK, Australia & UAE. Apache Kafka, Azure Event Hubs, Apache Flink, and Spark Streaming - designed for sub-second latency, fault tolerance, and millions of events per second. When batch ETL isn't fast enough, we build the streaming data architecture that closes the gap.

Sub-second latency - from event to dashboard in under 1 second
Certified on Kafka, Azure Event Hubs, Flink & Spark Streaming
Fault-tolerant, scalable architecture from day one
Up to 50% lower cost vs US/UK data engineering firms
Delivery Facts
<1s
End-to-end latency
event to dashboard
1M+
Events per second
handled in production
99%
Pipeline uptime SLA
across all deployments
50%
Lower cost vs US/UK
engineering firms
We build with
Apache Kafka
Azure Event Hubs
Apache Flink
Spark Streaming
AWS Kinesis
Confluent Cloud
Microsoft Fabric
Azure Stream Analytics
What We Build

When Batch Is Too Slow,
You Need Streaming

Batch pipelines are the right answer for most data workloads. But some decisions can't wait for the nightly run. Fraud detection that alerts after the transaction has cleared. Operational dashboards that show yesterday's inventory. Customer experience systems reacting to events that happened two hours ago. When the latency gap between data and decision is costing you money, real-time data streaming closes it.

Our real-time data streaming service designs and implements the event-driven architecture your use case requires, from simple CDC-to-dashboard pipelines to complex streaming data architectures processing millions of events per second with sub-second end-to-end latency. Built on Apache Kafka, Azure Event Hubs, Apache Flink, and Spark Streaming - with the same production-grade standards as everything else we deliver: monitoring, alerting, fault tolerance, and documentation from day one.

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When Clients Need Streaming
"We're detecting fraud after the transaction has completed"
Batch fraud detection running hourly or nightly is too slow. By the time the alert fires, the damage is done. Real-time stream processing can evaluate every transaction in under 100ms.
"Our operational dashboards show data from hours ago"
Operations teams making live decisions from dashboards that refresh every 4 hours. Inventory, logistics, production, and customer service all need data that reflects what's happening now.
"We need to trigger actions the moment a user behaviour changes"
Personalisation, abandonment alerts, and real-time recommendations all require sub-second event processing. Batch pipelines can't support the latency these customer-facing use cases demand.
"Our IoT / sensor data is arriving faster than batch can handle"
Manufacturing, logistics, and infrastructure monitoring generate thousands of events per second. Batch pipelines can't keep up, and by the time data is processed, the window to act has closed.
What We Deliver

Six Streaming Architecture Components We Build

From event ingestion to real-time dashboards - every layer of your streaming architecture designed and built to production standards.

Event Streaming Platform Setup

Design and implementation of your core event streaming platform, Apache Kafka, Confluent Cloud, or Azure Event Hubs - including topic design, partition strategy, consumer group architecture, and retention policies for your event volumes and latency requirements.

Topic & partition design for throughput
Consumer group & offset management
Schema registry & Avro/JSON schema design
Real-Time Ingestion Pipelines

Producers that capture events from your source systems - application logs, databases via CDC, IoT sensors, APIs, and clickstreams - and publish them to your streaming platform reliably, with exactly-once or at-least-once delivery guarantees as required.

Database CDC via Debezium / Kafka Connect
Application event producers
IoT & sensor data ingestion
Stream Processing & Transformations

The processing layer that enriches, filters, aggregates, and transforms events in-flight - built in Apache Flink or Spark Streaming. Windowed aggregations, real-time joins, stateful computations, and anomaly detection logic applied to every event as it arrives.

Apache Flink stateful stream processing
Windowed aggregations & real-time joins
Event-time vs processing-time handling
Streaming to Data Store

Sinks that land processed stream data into the right destination, real-time databases for low-latency queries, Delta Lake for lakehouse integration, Snowflake for warehouse persistence, or Elasticsearch for search and observability use cases.

Delta Lake streaming writes (upsert patterns)
Snowflake Snowpipe & streaming tables
Redis / Cosmos DB for low-latency serving
Real-Time Dashboards & Alerts

The serving layer that puts processed stream data in front of business users - Power BI real-time dashboards via streaming datasets, push notifications, operational alert systems, and auto-refresh reports, with sub-second display latency from event to screen.

Power BI streaming datasets
Real-time alert & notification systems
Grafana / Azure Dashboard integration
Monitoring, Replay & Resilience

Production observability built into every streaming pipeline - consumer lag monitoring, throughput metrics, dead-letter queue handling, and automated alerts when pipelines fall behind. Plus event replay capability so historic data can be reprocessed without data loss.

Consumer lag & throughput monitoring
Dead-letter queue & error handling
Event replay & reprocessing capability
How We Deliver It

From Use Case to Live Stream in 4 Phases

First streaming pipeline live in 2 weeks. We start with a single high-value use case, not a generic platform build - and expand from there.

Use Case & Latency Design

We identify the highest-value streaming use case and define latency requirements, event volumes, source systems, and target destinations before selecting any platform or writing any code. Not every problem needs Kafka.

⏱ Week 1
Architecture & Platform Setup

Platform selection and provisioning, Kafka cluster, Event Hubs namespace, or Confluent Cloud - with topic design, schema registry, network security, and monitoring infrastructure set up before any pipeline code begins.

⏱ Weeks 1–2
Producer, Processor & Sink Build

Sprint-based pipeline development - producers capturing source events, Flink or Spark Streaming processing logic, and sinks writing to the target data store. First live pipeline end-to-end in week 2 with full monitoring active.

⏱ Weeks 2–6
Load Testing, Cutover & Handover

Load testing at 2× production event volume before cutover. Gradual traffic migration with rollback capability. Full documentation - architecture diagrams, runbooks, monitoring playbooks, and team training on operating the streaming platform.

⏱ Final sprint
Why Numlytics

Why Choose Numlytics for Real-Time Data Streaming

We've built real-time streaming architectures for enterprises in financial services, retail, manufacturing, and SaaS across the US, UK, and Australia.

Use Case First, Platform Second
We start with your business problem - what decision needs sub-second data, before selecting Kafka, Event Hubs, or Flink. Not every streaming problem needs the same solution. Overengineered architectures cost more and break more.
Certified Kafka & Flink Engineers
Confluent Certified Kafka developers and Apache Flink-experienced engineers, not generalists configuring a Kafka cluster for the first time on your project. Real-world production streaming experience across financial services and manufacturing.
Sub-Second Latency Delivered
We design for the latency target your use case requires - and validate it under load before cutover. Not theoretical sub-second performance. Measured end-to-end latency from event emission to dashboard display, tested at 2× your production volume.
Streaming Integrates With Your Existing Stack
We connect your streaming layer to your existing Snowflake, Databricks, Fabric, or Power BI environment - so real-time and batch data converge in the same serving layer your team already uses. No parallel data silos.
99%+ Uptime in Production
Fault tolerance and replay capability built into every streaming architecture. Consumer lag monitoring, dead-letter queue handling, and automated alerts, so pipeline failures are detected and recovered before business users notice.
Up to 50% Lower Cost
Certified offshore data engineers from India, same streaming architecture quality as US or UK firms at up to 50% lower cost, with full timezone overlap, daily standups, and Slack access throughout the engagement.
★★★★★

"We were running fraud detection on hourly batch jobs. By the time an alert fired, the fraudulent transactions had already settled. Numlytics designed a Kafka-based streaming architecture that processes every transaction event in real time - running our fraud model via Flink against a feature store updated continuously from our customer behaviour stream. End-to-end latency from transaction event to risk score is under 200 milliseconds. Fraud losses in the first 90 days post-launch were down 34%. The architecture has handled our peak volumes - over 800,000 events per second, without a single incident."

TC
Thomas C.
VP Engineering · Payments Platform, United States
FAQ

Real-Time Streaming FAQs

Common questions before starting a real-time data streaming engagement with Numlytics.

Ask Us Anything →
Real-time data streaming is an architecture where data is continuously ingested, processed, and delivered as events occur - rather than collected in batches. It enables sub-second latency between a business event and the system that needs to act on it. Technologies like Apache Kafka, Azure Event Hubs, and Apache Flink form the core of modern streaming architectures.
You need real-time streaming when batch latency causes business harm - fraud detected after transactions clear, operational dashboards showing hours-old data, or customer-facing systems that must react instantly. If nightly or hourly batch ETL meets your needs, it's simpler and cheaper. We always assess whether streaming is genuinely required before recommending it. See our ETL pipeline development service for batch use cases.
Apache Kafka is a distributed event streaming platform, a high-throughput, fault-tolerant message broker that decouples event producers from consumers. It's the right choice for high-volume, multi-consumer use cases with strict durability requirements. For simpler or lower-volume use cases, Azure Event Hubs or AWS Kinesis may be a better fit. We recommend the right platform based on your event volumes, latency requirements, and cloud stack.
Numlytics delivers the first end-to-end streaming pipeline in 2 weeks - producer through processing to the serving layer. More complex streaming architectures with multiple event sources, stateful Flink processing, and real-time dashboard integration typically run across 4–8 week sprint engagements, with a working pipeline increment delivered every sprint.
Yes. Real-time streaming doesn't replace your existing batch ETL or data warehouse - it adds a parallel low-latency layer for the use cases that need it. We integrate streaming pipelines with your existing Snowflake, Databricks, or Microsoft Fabric environment so batch and streaming data converge in the same serving layer your BI tools already query.
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From Event to Decision in Under One Second

Get production-grade real-time data streaming - Kafka, Event Hubs, Flink, and Spark Streaming, with sub-second latency, 99%+ uptime, and full monitoring. Certified engineers. Proposal in 24 hours. US, UK, Australia & UAE.