Senior Lead Engineer - .NET Core

Job Summary

We are looking for a Team Lead / Architect to drive design and delivery of large-scale smart metering and utility platforms (HES, MDM, WFM, GIS, SSO) deployed across multiple enterprise client engagements, operating at production scales of 3.8M+ meters with 10M+ in planning. This role owns technical architecture, design documentation, and mentors a team of engineers delivering high-throughput, high-availability systems.

Responsibilities

• Own end-to-end solution architecture for utility/AMI platform modules, from design through production deployment.
• Author formal design documents, API reference documents, and ARB submissions for client and internal stakeholders.
• Design and review microservices architecture, ensuring scalability, fault tolerance, and clean domain boundaries.
• Apply appropriate design patterns to solve high-throughput, high-availability problems at billion-row data scale.
• Lead database architecture decisions for PostgreSQL at scale (partitioning, HA via Patroni, connection pooling via PgBouncer).
• Drive messaging architecture using RabbitMQ and Kafka for event-driven and high-volume telemetry pipelines.
• Architect and tune Elasticsearch for search, logging, or analytics use cases as required.
• Define and review Azure cloud architecture and deployment strategy (App Services, AKS, DevOps pipelines, networking).
• Lead containerization and deployment strategy using Docker on Ubuntu, including zero-downtime blue-green deployments.
• Conduct code reviews, set engineering standards, and mentor a team of developers.
• Own security architecture review, including remediation of VAPT findings (RBAC, authentication, encryption).
• Collaborate with client technical and executive stakeholders, translating requirements into technical designs.
• Troubleshoot and resolve complex production issues across data pipelines, integrations, and infrastructure.

Requirements

8+ years of overall software engineering experience, with demonstrated experience in technical leadership or architecture roles. Strong hands-on expertise in .NET Core (.NET 8 preferred) and modern C# development. Proven experience designing and implementing Microservices architecture. Strong working knowledge of Microsoft Azure (compute, storage, networking, DevOps/CI-CD). Hands-on experience with Elasticsearch for indexing, querying, and performance tuning. Deep expertise in PostgreSQL (16 preferred), including partitioning, replication/HA (Patroni), pooling (PgBouncer), and PostGIS for geospatial data. Practical experience with RabbitMQ and Kafka for asynchronous and event-driven messaging at scale. Strong grounding in software design patterns and ability to produce clear, implementable design documents. Experience with reverse proxy/load balancing (Nginx, HAProxy) and containerization (Docker) on Ubuntu/Linux. Familiarity with authentication/identity protocols (SSO, OAuth/OpenIddict, Entra ID) is a plus. Domain exposure to utility/AMI platforms - DLMS/COSEM meter protocols, HES/MDM systems, NB-IoT/LoRaWAN connectivity - is a strong plus. Excellent communication skills; ability to write precise, client-facing technical documentation and present architecture to both technical and executive audiences.

Good to Have

• Experience with GIS-based systems (PostGIS, tile serving, geospatial APIs).
• Exposure to security hardening and VAPT remediation in production systems.
• Experience with multi-tenant SaaS architecture and key management (e.g., Vault/OpenBao).