.NET Developer

Blue Ripples Technologies; Kuala Lumpur; On-site; MYR 80,000 - 120,000; Full time

Job summary

A tech company in Kuala Lumpur is seeking a Senior .NET Developer to design and build an on-premise, Kafka-centric IoT platform. This role will involve developing ASP.NET Core microservices, implementing Kafka data pipelines, and supporting real-time dashboards. The ideal candidate should have expertise in C#, .NET 6+, and strong experience with Apache Kafka and IoT ingestion patterns. Benefits include a competitive salary, medical insurance, and opportunities for professional growth.

Benefits

Competitive salary and benefits

Opportunities for professional growth

Medical insurance

Training (Technical & Soft skills)

Qualifications

• Strong experience with C#, .NET 6+/ASP.NET Core.
• Proficient with Apache Kafka and event-driven architectures.
• Experience with MQTT and IoT ingestion patterns.

Responsibilities

• Design and develop ASP.NET Core microservices.
• Build device registry and provisioning services.
• Implement Kafka-first data pipelines.
• Support real-time dashboards with low latency.

Skills

C#

.NET 6+/ASP.NET Core

Apache Kafka

Event-driven & streaming architectures

OAuth2

Keycloak

Redis

PostgreSQL / TimescaleDB

Docker

Kubernetes

Tools

Kafka producers and consumers

TimescaleDB/PostgreSQL

Job description

Overview

We are looking for a Senior .NET Developer to design and build an on‑premise, Kafka‑centric IoT platform handling 50,000+ devices, MQTT‑based ingestion, secure device provisioning using Keycloak, and sub‑second real‑time data visualization. The role focuses on building event‑driven microservices, real‑time ingestion pipelines, and scalable backend APIs.

Responsibilities

• Design and develop ASP.NET Core microservices using event‑driven architecture.
• Build device registry and device provisioning services integrated with Keycloak (OIDC, OAuth2, JWT).
• Implement Kafka‑first data pipelines for telemetry ingestion, device lifecycle events, alerts, rules, and downstream consumers.
• Develop Kafka producers and consumers using .NET (Confluent.Kafka / MassTransit).
• Integrate MQTT brokers with Kafka for scalable ingestion.
• Support real‑time dashboards (≤1 s latency) using Kafka → Redis → SignalR/WebSockets.
• Design APIs for fleet management, telemetry access, and reporting.
• Work with TimescaleDB/PostgreSQL for time‑series storage.
• Collaborate with DevOps on Docker, Kubernetes (on‑prem), Helm, CI/CD.
• Mentor junior engineers and contribute to architectural decisions.

Requirements

• C#, .NET 6+/ASP.NET Core.
• Strong experience with Apache Kafka (topics, partitions, consumer groups, exactly‑once / at‑least‑once semantics).
• Schema evolution (Avro/JSON/Schema Registry).
• Event‑driven & streaming architectures.
• MQTT and IoT ingestion patterns.
• OAuth2, OpenID Connect, JWT, Keycloak (preferred).
• Redis for real‑time caching and streaming.
• PostgreSQL / TimescaleDB.
• Docker & Kubernetes (on‑prem).

Good to Have

• Kafka Streams / Apache Flink integration.
• VerneMQ/HiveMQ/EMQX experience.
• MinIO / S3‑compatible storage.
• Industrial IoT / SCADA exposure.
• Observability tools (Prometheus, Grafana, ELK/OpenSearch).

Benefits

• Competitive salary and benefits.
• Opportunities for high‑speed professional growth and development.
• Collaborative and supportive work environment.
• Medical insurance.
• OP Allowance.
• Statutory Benefits like PF, ESI, LWF, Gratuity.
• Training (Technical & Soft skills).