Technical Lead - PHP/Laravel Expert with 10+ Years Experience

Location:

Gurugram, Haryana, India

Salary:

2500000

Posted:

June 01, 2026

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Resume:

KRISHAN KANT SAGAR

Technical Lead – PHP / Laravel / MySQL / REST APIs

+91-950******* *******************@*****.***

linkedin.com/in/krishankant-sagar-43597299 Baran, Rajasthan, India PROFESSIONAL SUMMARY

Technical Lead / Senior Software Developer with 10+ years of experience in PHP, Laravel, MySQL, PostgreSQL, REST API design, SQL schema design, and scalable backend application development. Strong hands-on expertise in object-oriented PHP, Laravel, MVC architecture, SOLID principles, PHPUnit testing, database performance tuning, API integrations, and production support. Experienced in leading client engagements, planning development processes, delivering complex technical projects, conducting code reviews, mentoring developers, managing technical delivery, and ensuring customer satisfaction for US and Australian clients. Comfortable working hands-on while guiding junior and mid-level developers through architecture decisions, debugging, coding standards, feature delivery, and professional development.

Strong background in building SaaS platforms, enterprise web applications, multi-tenant systems, secure REST APIs, third-party integrations, payment gateways, queue-based workflows, and high- performance database-backed applications.

CORE SKILLS

Languages: PHP 7/8, JavaScript ES6+, Node.js, SQL

PHP Frameworks: Laravel, Livewire, Eloquent ORM, Composer, PrestaShop Architecture: REST API Design, MVC, OOP, SOLID Principles, SQL Schema Design, Scalable Backend Systems, Multi-Tenant Architecture, SaaS Applications, System Integration Databases: MySQL, PostgreSQL, MongoDB, Query Optimization, Indexing, Database Performance Tuning, Stored Procedure Modernization

Testing: PHPUnit, Unit Testing, API Testing, Postman, Code Reviews DevOps & Tools: Git, GitHub Actions, CI/CD Pipelines, Docker, Linux Server, AWS S3, Composer, Grunt, Gulp

Security: JWT, OAuth2, RBAC, Secure API Design, Input Validation, SQL Injection Prevention, Authentication Boundaries, Data Protection

Leadership: Technical Leadership, Project Planning, Project Delivery, People Management, Team Mentoring, Development Process Planning, Task Delegation, Client Engagement, Customer Satisfaction, Agile/Scrum

Integrations: Stripe, Stripe Connect, Plaid API, CRS Credit Score API, Google Analytics API, Payment Gateways, Third-Party APIs

PROFESSIONAL EXPERIENCE

Senior Software Developer / Tech Lead

RadianSys Technologies Pvt. Ltd

04/2016 – Present Gurgaon, India

Technology services company specializing in software development for US and Australian clients. Lead PHP/Laravel project delivery from requirement analysis, technical planning, SQL schema design, development, testing, deployment, and post-release production support. Work hands-on across the backend lifecycle using PHP, Laravel, MySQL, PostgreSQL, REST APIs, Redis, Docker, Git, CI/CD, and AWS S3.

Act as the senior technical owner on client engagements, responsible for architecture decisions, delivery estimates, technical specifications, code quality, issue resolution, and customer satisfaction.

Design scalable backend systems using Laravel, RESTful APIs, MVC architecture, multi-tenant database design, Redis caching, Laravel Queues, background jobs, and role-based access control.

Apply object-oriented PHP, SOLID principles, secure coding standards, reusable service layers, and maintainable Laravel architecture across production applications. Design SQL schemas and optimize MySQL/PostgreSQL databases through indexing, query refactoring, performance tuning, and conversion of slow legacy stored procedures into clean Eloquent ORM-based code.

Build and maintain REST APIs with JWT authentication, OAuth2 token handling, API versioning, request validation, role-based access control, and documented API contracts. Write and maintain PHPUnit and unit tests for key backend workflows; use Postman and API testing practices before frontend handoff.

Plan development tasks, estimate timelines, delegate work to junior and mid-level developers, and track delivery milestones across Agile/Scrum project cycles. Conduct code reviews focused on coding standards, SOLID principles, security, performance, architecture consistency, readability, and maintainability. Mentor developers through technical guidance, debugging support, review feedback, professional development conversations, and best-practice adoption. Collaborate with product managers, QA teams, frontend developers, DevOps teams, and international clients to deliver high-quality software solutions. Troubleshoot complex production issues, identify root causes, optimize backend workflows, and support post-go-live stability.

Integrate third-party APIs and payment systems including Stripe, Stripe Connect, Plaid, CRS credit score API, Google Analytics API, external document processing APIs, and payment gateways.

Delivered Wells Fargo customer support platform that reached 1M+ user sessions in the first month and reduced average call handling time by 2–3 minutes. Built and maintained production platforms across fintech, legal, healthcare, banking, insurance, education, smart home, document management, and subscription-based SaaS domains with zero major production incidents.

Web Developer

Sai Educare Pvt. Ltd

01/2015 – 03/2016 Jaipur, India

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Educational technology company developing online learning solutions. Built and maintained PHP, MySQL, JavaScript, HTML, and CSS features for an Australian learning management system.

Developed new LMS modules, fixed production bugs, and improved application workflows based on teacher and student feedback.

Maintained a PrestaShop e-commerce platform, wrote custom modules, and supported product/ order volume growth.

Worked on PHP-based application development, database-driven modules, JavaScript enhancements, and production issue resolution.

KEY PROJECTS

CEU Cloud – Digital Document Management SaaS

Tech: Laravel, Eloquent ORM, MySQL, REST API, Stripe, RBAC Built admin portal for user management, document storage, access control, and automated upload workflows on a Laravel backend.

Designed SQL schema and database workflows for transcript-to-certification mapping tied to institutional compliance requirements.

Developed REST APIs and secure role-based access control for document-heavy SaaS workflows. Implemented Stripe subscription and in-app purchase flows using secure webhook handling. Platform reached 30,000+ active users within the first year. Landlord.FingerAndFinger – AI-Enabled Legal Case Management Platform Tech: Laravel, React, MySQL, REST API, Multi-Tenant Architecture, JWT Designed multi-tenant database architecture for multiple law firms using one shared platform with strict tenant isolation and secure access control. Built case tracking, document workflow automation, and role-based collaboration modules for attorneys, staff, and admins.

Integrated AI-driven document processing through REST APIs with proper error handling and retry logic.

Tuned database queries and adjusted backend architecture as production case volume increased.

Wells Fargo – Net Banking Customer Support Platform Tech: Node.js, Express.js, Bootstrap, Pug, jQuery, Google Analytics API Built backend and templating layer for a bilingual English/Spanish enterprise customer support platform used by Wells Fargo executives.

Integrated Google Analytics API for session and interaction tracking. Supported real-time customer guidance workflows and mobile app redirection. Delivered weekly client builds in two-week Agile cycles. Platform crossed 1M+ user sessions in month one and reduced average call handling time by 2–3 minutes.

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Star Casualty – Insurance Platform Modernization

Tech: Laravel, Livewire, MySQL, XML Data Migration Rewrote legacy insurance platform business logic in Laravel with Livewire components. Built a transformation layer to convert XML responses from the old system into normalized MySQL tables without data loss.

Improved maintainability and reduced dependency on legacy business logic. Polaris – FinTech Budget & Transaction Tracker

Tech: Node.js, Express.js, Plaid API, CRS API, PostgreSQL, JWT, OAuth2 Built backend APIs for bank account linking, transaction synchronization, category-based spend tracking, and financial goal management.

Integrated Plaid API and CRS credit score API for sensitive financial data workflows. Implemented OAuth2 token handling and JWT-based authentication for secure financial data access.

Money Buy App – P2P Fund Pooling Platform

Tech: Laravel, Stripe Connect API, Payment Gateway Integration Built fund chain logic and integrated Stripe Connect for connected account creation, customer wallets, and bank payouts.

Developed secure payment workflows for multi-party fund movement, transaction tracking, and payout processing.

Aesthetic Records – Healthcare SaaS Platform

Tech: Laravel, REST API, MySQL, Multi-Portal Architecture Joined an existing healthcare SaaS codebase and delivered new API features for US healthcare clients.

Wrote API documentation for each new endpoint and coordinated with frontend teams to reduce integration delays.

Supported multi-portal architecture with clean API additions while avoiding regression in existing integrations.

CrediBLL – US Recruitment Automation Platform

Tech: PHP, Laravel, Grunt, Gulp, Composer, Node.js Built candidate-recruiter matching engine and job seeker profile features using Laravel on the backend.

Managed build pipeline with Grunt and Gulp; used Composer for third-party module integration including resume parsing and notifications.

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KEY ACHIEVEMENTS

Delivered a Wells Fargo customer support platform with 1M+ user sessions in the first month. Reduced average customer call handling time by 2–3 minutes through guided net banking support workflows.

Built CEU Cloud platform that reached 30,000+ active users within year one. Designed multi-tenant legal SaaS architecture with strict data isolation across competing law firms.

Maintained a 10+ year record of production delivery with zero major incidents. Led code reviews, mentored developers, planned development tasks, and supported international client delivery across US and Australian projects. EDUCATION

B.Tech – Information Technology

Arya College of Engineering & Research Centre

08/2010 – 05/2014 Rajasthan

TRAINING

Microsoft Visual Studio Platform – ASP.NET, C#, and SQL Server Development Training Programme

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