Full-Time
Senior Full Stack Engineer
Frontend
Sia Partners
1,001-5,000 employees
Management consulting integrating AI and design
No salary listed
Mumbai, Maharashtra, India
In Person
On-site role based in Mumbai; local candidate preferred.
Bachelor's, Master's
 Software Engineering (2) |
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- Bachelor’s/master's degree in computer science, Software Engineering, or a related field.
- 3-6 years of experience in frontend development, with significant expertise in ReactJS.
- Expertise in ReactJS, NextJS, and Node.js.
- Experience with REST and GraphQL APIs.
- Proficient in JavaScript, TypeScript, and HTML/CSS.
- Familiar with Git, CI/CD, and Figma.
- Strong knowledge of micro-frontends, accessibility standards, and Application Performance Monitoring tools.
- Familiar with newer specifications of ECMAScript.
- Infrastructure as Code (IaC) skills with Terraform and Helm for efficient cloud infrastructure management.
- Hands-on experience in deploying and managing applications using GCP, AWS, or Azure.
- Ability to understand business requirements and translate them into technical requirements.
- Front-End Development: Develop and optimize sophisticated user interfaces using ReactJS. Ensure technical feasibility of UI/UX designs.
- Performance Optimization: Enhance application performance on the client side by implementing state management solutions and optimizing component rendering.
- Cross-Browser Compatibility: Ensure that applications perform consistently across different browsers and platforms.
- Collaboration: Work closely with backend developers and web designers to meet technical and consumer needs.
- Code Integrity: Maintain and improve code quality through writing unit tests, automation, and performing code reviews.
- Infrastructure as Code (IaC): Utilize Terraform and Helm to manage cloud infrastructure, ensuring scalable and efficient deployment environments.
- Cloud Deployment & CI Management: Work with GCP / AWS / Azure for deploying and managing applications in the cloud. Oversee continuous software integration processes including tests writing and artifacts building.
- Knowledge of isomorphic React is a plus
Sia Partners is a management consulting firm that blends AI and design with traditional strategy and operations work to deliver practical business value. It analyzes competitive landscapes, regulatory changes, and organizational design to help clients transform operations and strategy, using AI-enabled and design-driven approaches. With 2,400 consultants across 38 countries and services in 30+ sectors, it emphasizes CSR through its Consulting for Good program to turn sustainability into a driver of profitable transformation. The company aims to remain an independent pure-player consultant and to become a leading independent management consulting firm in Europe, focusing on sector-specific excellence.
Company Size
1,001-5,000
Company Stage
Growth Equity (Non-Venture Capital)
Total Funding
$275M
Headquarters
Paris, France
Founded
1999
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Simplify's Take
What believers are saying
- Blackstone committed up to €250 million on December 16, 2024, funding expansion.
- Sia hired Jeff Gapusan and Elizabeth Freeman in June 2026, strengthening U.S. banking sales.
- Revelio counted 3,789 employees in March 2026, and 730 active postings.
What critics are saying
- Sia Partners U.S., Inc. faces a Defend Trade Secrets Act case filed May 5, 2025.
- Kaiser acquisition integration can distract leaders from billable growth and margin control in 2026.
- Accenture, Bain, and BCG commoditize agentic consulting, squeezing Sia before 2027.
What makes Sia Partners unique
- Sia's 1,000 AI agents embed delivery workflows across client work and internal operations.
- OpenAI named Sia an Advanced Partner on July 24, 2026.
- Kaiser Associates adds Washington strategy depth to Sia's AI-led consulting stack.
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Benefits
Professional Development Budget
Growth & Insights and Company News
6 month growth
↑ 16%1 year growth
↑ 18%2 year growth
↑ 18%Sia, a global management consulting group, has acquired Kaiser Associates, a US-based strategy consulting firm, to launch a dedicated Corporate Strategy, Private Equity and M&A business line spanning the US, UK, France, Middle East and Australia. Founded in 1981, Kaiser Associates brings 65 consultants and operates from Washington, D.C., New York and London. The firm specialises in go-to-market strategy, growth assessments and market landscaping for Fortune 500 executives and private equity funds. Kaiser Associates' leadership team, including Ali Cumber, Paul Mumma and Jon Meyerholz, will join Sia as partners, with Meyerholz heading the new business line as managing partner. The acquisition expands Sia's North American presence and strengthens its position in private equity advisory.
Sia continues its strategic expansion with the acquisition of Precedence, a consulting player.
Sia has acquired The Upside, enhancing its brand, innovation, and cultural strategy capabilities in the UK. The Upside, founded in 2013, generated £6.2 million in 2024 revenues. This acquisition follows Sia's €250 million minority investment from Blackstone, supporting its European expansion. Niku Banaie, CEO of The Upside, will lead Sia's UK brand, innovation, and culture team. The Upside will adopt Sia's branding as part of the transition.
Dublin-based management and AI consulting firm Sia Partners has received investment of up to €250m from Blackstone, one of the world's largest alternative
Sia Partners has opened its capital to Blackstone, the world's largest alternative asset manager, through a €250 million minority investment. Despite this, founder and CEO Matthieu Courtecuisse retains a majority stake. This marks the first time Sia Partners has sought a financial partner since its founding in 1999. The firm, with nearly €500 million in revenue, aims to accelerate growth, especially in the U.S. and other countries where it operates.