Question
Full-time
2-5

Senior Software Engineer - Frontend ReactJS

11/24/2025

The Senior Software Engineer will develop and optimize user interfaces using ReactJS and enhance application performance. Collaboration with backend teams and designers is essential to ensure a high-quality user experience.

Working Hours

40 hours/week

Company Size

1,001-5,000 employees

Language

English

Visa Sponsorship

No

About The Company
Sia is an next-generation global consulting group in strategy, artificial intelligence and management. Founded in 1999, we were born digtal. Today our strategy and management capabilities are augmented by data science, enhanced by creativity and driven by responsibility. Our 3,000 consultants in 19 countries share a strong belief: optimism is force multiplier and we help clients initiate, navigate and benefit from transformation. AI and data science is the powerhouse of Sia, augmenting consulting services and accelerating productivity. With 450 Data Strategists and Experts, 12 R&D Labs, and advanced GenAI Assistants, Sia is positioned as a leader in AI adoption.
About the Role

Company Description

Sia is a next-generation, global management consulting group. Founded in 1999, we were born digital. Today our strategy and management capabilities are augmented by data science, enhanced by creativity and driven by responsibility. We’re optimists for change and we help clients initiate, navigate and benefit from transformation. We believe optimism is a force multiplier, helping clients to mitigate downside and maximize opportunity. With expertise across a broad range of sectors and services, our consultants serve clients worldwide. Our expertise delivers results. Our optimism transforms outcomes. 

Heka.ai is the independent brand of Sia Partners dedicated to AI solutions. We host many AI-powered SaaS solutions that can be combined with consulting services or used independently, to provide our customers with solutions at scale.  

Job Description

We are looking for a skilled Senior Software Engineer to play a key role in our front-end development using ReactJS. This role involves enhancing user interface components and implementing well-conceived designs into our AI-powered SaaS solutions. You will collaborate with backend teams and designers to ensure seamless application performance and a high-quality user experience. 

Key Responsibilities 

  • 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. 

Qualifications

Education: Bachelor’s/master's degree in computer science, Software Engineering, or a related field. 

Experience: 3-6 years of experience in frontend development, with significant expertise in ReactJS. 

Skills: 

  • 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 APM tools. 

  • Familiar with newer specifications of ECMAScript. 

  • Knowledge of isomorphic React is a plus. 

  • 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. 

Additional Information

What We Offer: 

  • Opportunity to lead cutting-edge AI projects in a global consulting environment. 

  • Leadership development programs and training sessions at our global centers. 

  • A dynamic and collaborative team environment with diverse projects. 

Sia is an equal opportunity employer. All aspects of employment, including hiring, promotion, remuneration, or discipline, are based solely on performance, competence, conduct, or business needs. 

Key Skills
ReactJSNextJSNode.jsREST APIsGraphQL APIsJavaScriptTypeScriptHTMLCSSGitCI/CDFigmaMicro-FrontendsAccessibility StandardsAPM ToolsTerraformHelm
Categories
TechnologySoftwareConsulting
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