Full-Time

Senior Frontend Engineer

Updated on 9/4/2026

StackAI

StackAI

51-200 employees

Low-code platform to build AI workflows

Compensation Overview

€89k - €127k/yr

Madrid, Spain + 2 more

More locations: Salamanca, Spain | Remote in Spain

Remote

Category
Software Engineering (1)
Required Skills
Tailwind CSS
React.js
TypeScript
Next.js

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Requirements
  • Write clean, maintainable, trustworthy code that requires minimal review.
  • Demonstrate strong execution by shipping quickly and effectively.
  • Have 5+ years of experience with React, TypeScript, Next.js, and a modern frontend stack.
  • Own decisions and respond when needed.
  • Own features end-to-end autonomously without hand-holding.
  • Engage with detail-oriented and iterative work essential to the product's success.
  • Demonstrate technical excellence and contribute knowledge that can teach the team.
Responsibilities
  • Optimize and refine existing frontend code and features.
  • Implement incremental user experience and user interface improvements from detailed design specifications; design skills are not required.
  • Work autonomously with minimal code review needed.
  • Collaborate with Product Designers, Design Engineers, and Frontend Engineers on execution.
  • Focus on high-impact improvements that elevate product quality and user experience.
  • Clean up and improve legacy code.
Desired Qualifications
  • Experience with Tailwind CSS.
  • Understanding of UI fundamentals; design skills are not required.
  • Experience cleaning up and optimizing existing codebases.
  • Comfort working across the stack when needed.

Stack AI builds an enterprise-ready, no-code platform for creating and deploying AI agents and workflow automations. It uses a visual drag-and-drop interface to connect data sources and large language models with business systems like SharePoint, Snowflake, Salesforce, Google Drive, and Notion, enabling knowledge-based assistants, contract analysis, RFP responses, and data extraction. The platform lets teams assemble AI-powered workflows that fetch data, run models, and deploy applications without heavy coding, speeding internal tooling. Its differentiators are enterprise-focused deployment options (including on-premise), compliance (SOC 2, GDPR, HIPAA), and tiered pricing, aimed at reducing deployment time and improving model accuracy across back-office processes.

Company Size

51-200

Company Stage

Series A

Total Funding

$19.1M

Headquarters

San Francisco, California

Founded

2021

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Simplify Jobs

Simplify's Take

What believers are saying

  • February 2026 shipped SCIM 2.0, OpenTelemetry audit logs, and SDLC environments.
  • August 2026 site touts 300+ integrations and regulated deployments for complex enterprises.
  • Asana's May 2026 acquisition gives StackAI immediate enterprise distribution and sales reach.

What critics are saying

  • Asana bought StackAI for $75 million; the brand disappears inside a larger platform.
  • Microsoft Copilot, Anthropic, and Salesforce can bundle adjacent agent tooling faster.
  • Enterprise no-code agents commoditize quickly; StackAI loses pricing power by 2027.

What makes StackAI unique

  • Enterprise IT teams get VPC, on-prem, audit logs, and feature controls.
  • StackAI integrates 300+ systems, including SharePoint, Snowflake, Salesforce, and Google Drive.
  • Asana acquired StackAI on May 28, 2026, validating its cross-system agent layer.

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Benefits

Competitive Compensation Package

Growth & Insights and Company News

Headcount

6 month growth

13%

1 year growth

7%

2 year growth

13%
AIM Research
May 8th, 2025
Stack AI Secures $16M for AI Agents

Stack AI has raised $16 million to develop a platform that allows enterprises to create custom AI agents. These agents can interact with various systems and be deployed for a range of tasks, aiming to enhance work intelligence and efficiency rather than reinvent it.

Toolhunt
May 7th, 2025
RelevanceAI and Stack AI Secure Millions in Funding to Bring AI Agents to the Workforce

Stack AI, on the other hand, secured $16 million in Series A funding for its platform that allows enterprises to connect various data sources with large language models and create customized AI agents.

FinSMEs
May 7th, 2025
StackAI Raises $16M in Series A Funding

StackAI, a San Francisco, CA-based platform provider that enables enterprises to create custom AI Agents, raised $16M in Series A funding.

GeekWire
Aug 2nd, 2024
How Is Ai Helping You At Work? We Asked Seattle Founders And Investors About Their Favorite Tools

From left, top row: Jenny Cronin, Vik Korrapati, William Zee, Nermeeta Dhillon, Mary O’Kelly Boit, T.A. McCann. Bottom row: Minh Le, Morgan Blumberg, Diego Oppenheimer, Lekshmi Venu, Martín Ramírez, Dave Parker. (GeekWire Photos / Taylor Soper)The use cases for generative AI are still being ironed out amid a plethora of new tools hitting the market. It’s not totally clear what can actually provide value to everyday work — but there are certainly some early signals of adoption. That was our takeaway after speaking with Seattle founders, investors, and innovators at the AI2 Incubator‘s annual summer party on Thursday evening.The BBQ bash, hosted by the Seattle-based firm that invests and incubates AI-focused startups, was the perfect place to get a pulse on popular AI apps and services that folks are using.Many were quick to mention a favorite tool that was saving time or helping boost knowledge

TechCrunch
May 21st, 2024
Stack AI raises $3M for AI workflows

Stack AI, founded by MIT PhD graduates Antoni Rosinol and Bernardo Aceituno, aims to simplify AI-driven workflow creation. After joining Y Combinator's Winter 23 cohort, they developed a low-code tool for building AI workflows, such as chatbots and AI assistants. The platform connects data sources and LLMs, enabling powerful automations with minimal coding. In six months, they’ve gained over 200 customers and raised $3 million. Early adopters include the healthcare sector, where data reliability is crucial.