Sr. Software Engineer (React / Typescript) | Remote | Worldwide

Upstack Data; Teletrabalho; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

A fast-growing SaaS company is seeking a talented Senior Software Engineer skilled in React and TypeScript for a fully remote role. You will be responsible for developing and maintaining our frontend applications while collaborating closely with the CEO. This position demands strong UI/UX design judgment and requires prior experience with B2B SaaS applications. Excellent communication skills and the ability to work autonomously are essential. The expected salary ranges from $3,500 to $6,000 USD monthly, depending on experience.

Qualificações

• 6+ years of hands-on experience developing production React applications with TypeScript.
• Strong experience with types and backend API calls.
• Excellent communication skills and problem-solving abilities.

Responsabilidades

• Design, develop, and maintain high-quality React components and features for the SaaS application.
• Collaborate with the CEO on product requirements, providing technical insights.
• Monitor and analyze frontend performance metrics and address issues proactively.

Conhecimentos

React application development

TypeScript proficiency

RESTful APIs experience

Tailwind CSS

UI design judgment

Ferramentas

Git

shadcn/ui

Radix UI

Descrição da oferta de emprego

Sr.

Software Engineer (React / TypeScript) | Remote | Worldwide

Join to apply for the Sr.

Software Engineer (React / TypeScript) | Remote | Worldwide role at Upstack Data.

$3,500 - $6,000 USD monthly salary

Role hours require working US Eastern Timezone.

About Upstack Data

We're a customer identity resolution platform helping marketing teams connect ad spend to actual customer behavior.

We're a small but fast-growing bootstrapped SaaS company based in the USA with a fully remote team.

About The Role

We are seeking a talented and product-mindful Senior Frontend Engineer to join Upstack Data, a customer identity resolution platform helping marketing teams connect ad spend to actual customer behavior.

In this role, you will own our frontend applications—both our React-based B2B SaaS product and React-based admin tools.

You will work directly with our CEO to translate business requirements into high-quality code, making independent UI / UX decisions throughout the product development lifecycle from initial concept to deployment and optimization.

A distinguishing aspect of this role is your ability to design clean, modern interfaces without relying on dedicated designers.

You will influence product and technology decisions, establish our component library and design system, and build interfaces for complex features including dashboards, analytics views, data tables, integration settings, and billing flows.

This is an excellent opportunity for someone passionate about creating impactful B2B SaaS products, with strong product sense and an understanding of what makes tools like Stripe, Linear, and Vercel feel intuitive and polished.

Qualifications

6+ years of hands‑on experience developing production React applications with TypeScript

Strong experience with types and backend API calls

Expert proficiency in modern React patterns including hooks, context API, composition, and performance optimization

Strong experience with shadcn / ui, Radix UI, or similar headless component libraries

Solid understanding of Tailwind CSS and modern CSS practices (flexbox, grid, responsive design)

Strong UI judgment and ability to design intuitive interfaces independently without designer mockups

Experience building B2B SaaS applications with understanding of common UI patterns (data tables, filters, dashboards, forms, settings)

Familiarity with RESTful APIs and integration with backend services and third‑party platforms (Stripe, analytics, marketing tools)

Experience with Git workflows and modern deployment practices

Knowledge of frontend testing frameworks and best practices for code quality

Excellent communication skills and autonomous problem‑solving abilities

Available for 4-5 hours overlap with US Eastern timezone

Strong English verbal and written communication.

Responsibilities

Design, develop, and maintain high-quality React components and features for our SaaS application using TypeScript and shadcn / ui

Make independent UI / UX decisions on layouts, user flows, information hierarchy, and interaction patterns that create intuitive user experiences

Collaborate with the CEO on product requirements, providing technical perspective on feasibility and proposing alternative approaches that balance user value with engineering effort

Establish and maintain our component library and design system to ensure consistency and reusability across the application

Participate in code reviews and contribute to establishing frontend engineering standards and best practices

Optimize application performance focusing on Core Web Vitals, bundle sizes, load times, and overall user experience

Integrate frontend applications with backend APIs and third‑party services including payment processors, analytics platforms, and marketing tools

Write comprehensive tests using modern testing frameworks to ensure code quality and reliability

Monitor and analyze frontend performance metrics, addressing issues proactively

Identify opportunities for technical improvements and innovations to enhance both product quality and development efficiency

Support deployment, monitoring, and troubleshooting of applications in production environments

Stay current with React ecosystem trends and emerging frontend technologies to continuously improve our product offerings

Compensation & Application

Fully remote position.

Seniority level : Mid‑Senior level

Employment type : Full‑time

Job function : Engineering and Information Technology

Industries : Software Development

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