Principal Software Engineer

iSolved HCM; Hyderabad; On-site; INR 3,000,000 - 6,000,000; Full time

Job summary

iSolved HCM is seeking a Principal Software Engineer for its API team in Hyderabad to lead the design, development, and modernisation of the API layer. This role sits within the Integrations workstream and focuses on scalable, secure API evolution for external partners and internal services.

You will drive API contracts, versioning, governance, and migration from legacy systems to RESTful and event‑driven patterns, while leveraging AI‑assisted development to maximise velocity and quality across

Qualifications

• 7+ years of experience building web applications and services.
• Strong Azure, .NET/C#, API design and security.
• Experience with Azure API Management, Cosmos DB, Service Bus, or Event Grid.
• Familiarity with OpenAPI/Swagger documentation and secure API design (OAuth 2.0).

Responsibilities

• Design scalable API architectures for the integration ecosystem and partner network.
• Define API contracts, versioning strategies, and governance standards.
• Migrate legacy endpoints to RESTful and event‑driven patterns.
• Build API consumers and producers with focus on performance, security, and backward compatibility.
• Lead code reviews and promote best practices through pairing and leadership.
• Collaborate with product management and partner teams to translate requirements into technical specs.
• Identify and resolve performance bottlenecks in API infrastructure.
• Document best practices for API development, testing, and monitoring.
• Incorporate AI‑assisted development tools to maximize velocity and code quality.

Skills

.NET/C#

Azure

ASP.NET Core

SQL Server

Microservices

REST APIs

OpenAPI

OAuth 2.0

API Gateways

SOLID

AI-assisted dev

Unit testing

Tools

Azure API Management

Cosmos DB

Service Bus/Event Grid

Job description

Job Description

The Principal Software Engineer for the API team is a hands‑on technical leader responsible for designing, building, and evolving isolved's API layer as part of a broader platform modernization initiative. Embedded within the Integrations workstream, this role focuses on developing scalable, secure, and well‑governed APIs that support external partners, third‑party integrations, and internal services. The position combines architecture and execution, requiring direct ownership of API design, implementation, and migration from legacy systems to modern RESTful and event‑driven patterns. Leveraging AI‑assisted development as a core practice, the architect drives standards for API contracts, versioning, and governance while ensuring high performance, reliability, and alignment with enterprise growth needs.

Core Job Duties

• Designing and implementing modern, scalable API architectures that support isolved's integration ecosystem and partner network
• Defining API contracts, versioning strategies, and governance standards that ensure consistency and reliability across the platform
• Driving the migration of legacy interaction endpoints to modern RESTful and event‑driven patterns as part of the integration modernization initiative
• Building API consumers and producers with a strong focus on performance, security, and backward compatibility, and elevating the team's practices through code reviews, pairing, and leading by example
• Performing code reviews to ensure API implementations meet quality standards and follow established patterns
• Collaborating with product management and partner‑facing teams to understand integration requirements and translate them into technical specifications
• Identifying and resolving performance bottlenecks in API infrastructure, including latency, throughput, and reliability issues
• Establishing and documenting best practices for API development, testing, and monitoring across the engineering organization
• Using AI‑assisted development tools – including agentic coding, spec‑driven development, and AI‑augmented code review – as a core part of your daily workflow to maximize velocity and code quality, and helping establish AI‑augmented development practices across the team

Minimum Qualifications

• 7+ years of experience developing web applications and services, including 3+ years in cloud‑native environments
• Proficiency in Azure, .NET/C#, ASP.NET Core Web APIs and SQL Server
• Strong experience designing and building microservices and RESTful APIs
• Hands‑on experience with API gateways and API management best practices
• Demonstrated use of AI‑assisted development tools in professional workflows
• Solid understanding of unit testing, SOLID principles, and secure API design (OAuth 2.0)
• Familiarity with JavaScript and OpenAPI/Swagger documentation standards
• Preferred:
  • Experience with Azure API Management, Cosmos DB/NoSQL, messaging systems (Service Bus/Event Grid), containers, or large‑scale systems

EEO Statement

isolved is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status. isolved is a progressive and open‑minded meritocracy. If you are smart and good at what you do, come as you are.

Disability Accommodation

Visit www.isolvedhcm.com/careers for more information regarding our culture and focus on our employee experience. Visit www.isolvedeebenefits.com for a comprehensive list of our employee total rewards offerings.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions outlined above.