Mphasis · 3 hours ago
Senior React Developer
California, United States
Full-time
Onsite
Senior Level
6+ years expMphasis is seeking a Senior React Developer with a strong programming background to lead the design and implementation of high-quality, performant front-end applications. The role involves shaping UI architecture, mentoring engineers, and collaborating closely with product, design, and backend teams to deliver resilient and accessible user experiences.
Artificial Intelligence (AI)BlockchainCyber SecurityInformation TechnologyIT Management
Responsibilities
Lead front-end architecture and develop complex, reusable React components and hooks
Drive state management patterns (e.g., Redux) and ensure predictable data flows in large applications
Integrate REST APIs, handle JSON payloads, and optimize network interactions
Enforce coding standards, conduct code reviews, and improve test coverage with Jest/React Testing Library/Enzyme
Partner with designers to implement responsive, accessible UIs using HTML5, CSS3/SASS, and component libraries (e.g., Material UI/React Bootstrap)
Champion performance and accessibility best practices; instrument and debug with modern browser tools
Collaborate in Agile ceremonies; help define stories, acceptance criteria, and release plans
Qualification
Required
6–10+ years of professional software development, with 4+ years focused on React.js at scale
Expert-level JavaScript/TypeScript and deep knowledge of ES6+ patterns and React internals
Proven experience with Redux, component composition, custom hooks, and performance optimization
Strong front-end engineering fundamentals: semantic HTML, modern CSS, responsive design, and accessibility (WCAG/ADA)
Hands-on testing experience (unit, integration, E2E) with Jest/RTL/Enzyme; CI integration
Proficiency with Git and common workflows; comfort with Agile/Scrum delivery
Preferred
Familiarity with Next.js, charting/grid libraries (e.g., agGrid, Recharts/Highcharts), and modern build tooling
Experience collaborating with cross-functional teams in regulated or enterprise environments
Company
Mphasis
Mphasis is an IT services company that offers blockchain, cyber security, product engineering, DevOps, and other services. It is a sub-organization of Blackstone Group.
10001+ employees
H1B Sponsorship
Mphasis has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1685)
2024 (1453)
2023 (1350)
2022 (1639)
2021 (1415)
2020 (1251)
Funding
Current Stage
Public CompanyTotal Funding
$68.92MKey Investors
Blackstone Group
2020-04-02Post Ipo Equity· $68.92M
2016-04-05Acquired
2004-06-04IPO
Leadership Team
Nitin Rakesh
Chief Executive Officer and Managing Director
Aravind Viswanathan
Chief Financial Officer
Recent News
Business Standard India
2026-01-23
2026-01-23
2026-01-23
Company data provided by crunchbase