Technical Lead - System Design

aQb Solutions Pvt Ltd; Kolkata District; On-site; INR 1,500,000 - 2,500,000; Full time

Job summary

aQb Solutions Pvt Ltd is seeking a Technical Lead in Kolkata, India. This hands-on role will involve designing, building, and scaling modern software systems while guiding teams through technical leadership. The ideal candidate should have strong experience in system design, backend development, and familiarity with cloud and DevOps practices.

The position requires proficiency in languages such as Node.js, Python, or Java and experience with Microservices and cloud technologies like AWS or Azure. Strong communication skills are essential for collaborating with cross-functional teams.

Qualifications

• Strong experience in system design and distributed systems.
• Hands‑on backend development experience in Node.js, Python, Java, .NET, or PHP.
• Experience with relational and NoSQL databases like PostgreSQL or MongoDB.

Responsibilities

• Design and evolve scalable and maintainable system architectures.
• Make architectural trade-offs between various approaches.
• Own technical decisions from design through to production.

Skills

System design

Microservices

Node.js

Communication

Cloud technologies

Tools

Docker

Kubernetes

AWS

Jira

Confluence

Job description

Role Overview

We are looking for a hands‑on Technical Lead to design, build, and scale modern software systems. The role involves owning technical decisions end‑to‑end from architecture and design to production while guiding teams through strong technical leadership and best practices. The ideal candidate is comfortable working in ambiguous problem spaces, can balance business needs with technical trade‑offs, and enjoys building scalable, future‑ready systems.

Key Responsibilities

• Design and evolve scalable, secure, and maintainable system architectures.
• Make architectural trade‑offs (Monolith vs Microservices, SQL vs NoSQL, Serverless vs Containers).
• Translate business requirements into system designs, APIs, and data models.
• Own technical decisions from design through production.
• Guide and influence engineering teams through code reviews and technical direction.
• Define standards for code quality, security, testing, and documentation.

Required Skills & Experience

• Strong experience in system design and distributed systems.
• Experience with Microservices, Event‑Driven Architectures, Serverless, or Clean Architecture.
• Hands‑on backend development experience (Node.js / Python / Java / .NET / PHP).
• Experience with relational and/or NoSQL databases (PostgreSQL, MySQL, MongoDB, etc.).
• Cloud and DevOps exposure: Docker, Kubernetes, Terraform, AWS/Azure.
• Strong communication skills and experience working with cross‑functional teams.

Nice To Have

• Experience with Domain‑Driven Design (DDD).
• Exposure to AI‑native systems, agentic architectures, or AI‑augmented development workflows.
• Frontend exposure (React / Vue / Angular / TypeScript / Next.js).

Tools & Environment

• Planning: Jira, Confluence.
• Frontend: React, Vue, Angular, TypeScript, Next.js.
• Backend: Node.js, Python, Java, .NET, PHP.
• Databases: PostgreSQL, MySQL, MongoDB.
• Cloud & DevOps: Docker, Kubernetes, Terraform, AWS, Azure.