Principal Engineer

Helfie.AI; Hyderabad; On-site; INR 3,500,000 - 7,000,000; Full time

Job summary

Helfie.AI is seeking an experienced Senior Backend Architect to own the architecture and technical direction of large-scale backend systems in Hyderabad. You will design scalable, reliable distributed systems and lead high-level and low-level design efforts while staying hands-on with coding, reviews, and debugging.

The role requires strong expertise in microservices, event-driven architectures, CQRS, and DDD, with a focus on data consistency, availability, and performance.

Qualifications

• 8+ years of backend/software engineering experience.
• Proven experience designing and architecting large-scale production systems.
• Strong expertise in distributed systems and scalability patterns.
• Experience with microservices, service-oriented architecture, CQRS and event sourcing.
• Hands-on coding, architectural leadership and code-review discipline.

Responsibilities

• Own the architecture and technical direction of large-scale backend systems.
• Design and build highly scalable, reliable, and fault-tolerant distributed systems.
• Drive HLD and LLD for complex services and systems.
• Remain hands-on with coding, code reviews, and debugging.
• Design and evolve microservices and service-oriented architectures.
• Build event-driven pipelines and asynchronous processing.

Skills

Backend architecture

Distributed systems

Microservices

DDD

CQRS & event sourcing

HLD & LLD

APIs design

Performance optimization

Job description

Responsibilities:

• Own the architecture and technical direction of large-scale backend systems.
• Design and build highly scalable, reliable, and fault-tolerant distributed systems.
• Drive High-Level Design (HLD) and Low-Level Design (LLD) for complex systems and services.
• Remain hands-on with coding, code reviews, technical design, and debugging.
• Design and evolve microservices and service-oriented architectures.
• Build event-driven systems and asynchronous processing pipelines.
• Apply Domain-Driven Design (DDD) to develop scalable and maintainable systems.
• Design systems using CQRS and event sourcing where appropriate.
• Make architectural decisions around data consistency, availability, scalability, and performance.
• Design robust APIs and service contracts.
• Identify and resolve scalability, reliability, and performance bottlenecks in production systems.
• Establish engineering standards, design principles, and best practices across teams.
• Mentor senior engineers and provide technical leadership across complex initiatives.
• Collaborate closely with Product, Engineering, Data, AI/ML, and other cross-functional teams.
• Lead architecture reviews and drive continuous improvement of the technology platform.

Requirements:

• 8+ years of experience in backend/software engineering.
• Strong hands-on programming and software engineering experience.
• Proven experience designing and architecting large-scale production systems.
• Strong expertise in system design and software architecture.
• Experience owning or leading technically complex production platforms.
• Strong understanding of distributed systems and scalability patterns.
• Experience with microservices / service-oriented architecture.
• Strong understanding of event-driven architecture.
• Practical experience with CQRS, event sourcing, and domain-driven design (DDD).
• Strong understanding of databases, data modeling, transactions, and data consistency.
• Strong experience designing scalable APIs and service interfaces.
• Strong understanding of reliability, fault tolerance, high availability, and performance optimization.
• Excellent understanding of HLD and LLD.
• Strong knowledge of software engineering principles, design patterns, clean code, and coding best practices.