Senior Software Engineer (Full Stack)

3Pillar Global; India; On-site; INR 2,400,000 - 3,600,000; Full time

Job summary

3Pillar Global is hiring for a senior software engineer to build AI-enabled platforms and enterprise-grade apps. You will work on high-availability systems, client integrations, and multi-variant architectures across iOS and Android ecosystems.

Join a fast-paced team, participate in agile ceremonies, and mentor junior engineers while delivering robust, scalable software solutions in a distributed environment.

Qualifications

• 5+ years of experience in Node.js, React, and React Native
• Experience developing mobile apps and microservices
• Strong knowledge of Docker, databases (PostgreSQL/SQL) and testing (Jest)
• Solid understanding of design patterns, OOP, and enterprise app architectures
• Experience with scalable, secure, high availability systems and English communication

Responsibilities

• Facilitate communication with client stakeholders regarding project status and recommendations.
• Write efficient, performant, and secure client code.
• Participate in planning, estimation, and requirements gathering.
• Present developed features to clients and organize demonstrations.
• Promote best practices and mentor engineers through CoPs and reviews.
• Lead delivery within defined architecture and drive end-to-end implementation.

Skills

Node.js

React

React Native

Mobile app experience

Docker

Microservices

Unit Testing (Jest)

TypeScript

Tools

PostgreSQL

Express Framework

ORMs (TypeORM)

SQL

Job description

3Pillar is an AI transformation partner on a mission to help enterprises build the AI-native products and intelligent agents that will define the next era of business. With teams across North America, Europe, Latin America, and Asia, we work with the most ambitious companies in financial services, healthcare, media, and technology – helping them move faster, modernise boldly, and compete on their own terms. Our HelixAI platform and Helix Pods delivery model put our engineers at the center of real agentic transformation – doing work that is open, portable, and built to last. We are building the future of enterprise AI.

Key Responsibilities:

• Facilitate effective communication with client project stakeholders regarding project status and recommendations.
• Craft client code that is not just efficient, but also performant, testable, scalable, secure, and of the highest quality.
• Actively participate in accurate planning and estimation efforts, utilizing project methods and tools.
• Proficiently gather requirements and organize/present developed features for clients.
• Execute complex activities within the current methodology and quality standards, showcasing success across diverse engagements.
• Promote client success across the team by collaborating with engineers, designers, and managers to understand user pain points, anticipate potential problems, and iterate on solutions that drive client success.
• Engage in agile software development, including daily stand-ups, sprint planning, team retrospectives, and other governance activities.
• Actively participate in the Engineering Practice community, mentoring others through Communities of Practice (CoPs) or on project teams, and supporting the growth of technical capabilities.
• Independently drive project delivery within defined architecture, demonstrating autonomy and accountability in all stages from conceptualization to deployment.

Core Feature Engineering:

• Develop critical functional logic across platform components, including global identity management, cross-system profile sync configurations, and conditional event state machines for multi-variant tournament bracket processing.
• High-Performance Client Architectures: Build out client-side data persistence layers and sync semantics for native iOS (Swift/SwiftUI) or Android (Kotlin/Compose) structures, ensuring a sub-2-second cold launch target and reliable local reads under zero-connectivity field conditions.
• Cryptographic Data Protections: Implement field-level encryption protocols using AWS KMS customer-managed keys on sensitive user attributes, specifically enclosing minor-athlete medical, dietary, and safeguarding-restricted parameters.
• Advanced Integration Adapters: Construct third-party integration adapters running at a non-accelerated baseline factor, connecting messaging transports (WhatsApp Business API fan-out), profile systems of record, and peer-to-peer payment gateway handoffs.
• Automated Verification Feeds: Write comprehensive unit, integration, and contract test fixtures to feed the automated evaluation harness, ensuring that features cleanly handle complex boundary conditions.
• Technical Mentorship & Governance: Perform exhaustive code reviews at assigned trust tiers and provide active mentorship to software engineers regarding modular decoupling, defensive coding, and domain safety.

Minimum Qualifications:

• A minimum of 5+ years of experience/expertise in the following areas specified below*: Expertise in NodeJs(primary), React, React Native, mobile app experience, Docker, Postgres Proven experience in developing microservices and local environment setup Proven track record of Design, development and implementation of React UI/.Net based large volume, high availability enterprise applications Experience on exception handling, correct use of data structures, multi-threaded programming, memory management and application tuning Strong NodeJs (Typescript, Express Framework, type-orm, class-validator) based microservices development Must have excellent exposure in Unit Testing by jest Good knowledge in design patterns Good hands on experience with RDBMS like Oracle/ SQLServer have ability to write data structures, basic SQL Queries & knowledge of joins, Views, Group By, Having Clause etc Excellent oral/written communication and interpersonal skills with ability to multitask and work under pressure to meet deadlines Experience in Agile software development methodologies. Expertise in applying Object-Oriented Programming principles (abstraction, encapsulation). High-level design proficiency following UML / C4 / ArchiMate. Experience in creating and implementing well-tested, scalable, and performant enterprise-level systems. Practice and initiative mentoring other engineers and decision-makers throughout the organization. Good understanding of SOLID principles. Familiarity with OWASP. Proficiency in the English language.

Additional Experience Desired:

• Object-Relational Mappers (ORMs) Architectural (Micr