Senior Front-end Developer

Outtask; Zuid-Holland; On-site; EUR 90,000 - 120,000; Full time

Job summary

Outtask is seeking a Senior Full-Stack Developer to design and build data-driven, cloud-native platforms that support real-time insights and safer decisions. You will work across product, design, engineering and DevOps to deliver scalable software with AI-assisted engineering.

You will design, build, and evolve full-stack applications using React, TypeScript, Node.js, and Python, including interactive map-based tools with real-time data and multi-tenant cloud services.

Qualifications

• At least 8 years of full-stack development experience, preferably in enterprise or data-intensive environments.
• Demonstrable production experience with AI-assisted development tools such as Claude Code, Cursor, or GitHub Copilot, including task decomposition, context engineering, and verification of generated output.
• Experience with mapping libraries, spatial data, or identity and access management is beneficial; an interest in marine survey and remote sensing data is valuable.
• Quality and collaboration: strong testing discipline, clear communication, and contribution through pairing, mentoring, and knowledge sharing.

Responsibilities

• Design, build, and evolve full-stack applications and cloud-native services for data-intensive use cases.
• Influence architecture and engineering practices; help colleagues advance AI-assisted coding.
• Develop full-stack web apps with React, TypeScript, Node.js, and Python.
• Build interactive map-based tools with real-time data integration and spatial editing.
• Create resilient, scalable cloud services for multi-tenant, large geodata volumes, and many users.
• Contribute to architectural decisions and collaborate with Product and Design from discovery through production.
• Work with DevOps to ensure services run reliably in production.
• Improve code reviews, testing practices, and engineering guardrails for rapid delivery of high quality.

Job description

A enterprise organization is developing cloud-based platforms that help customers work with complex infrastructure data. As a Senior Full-Stack Developer, you will build digital products that support real-time insight, safer decisions, and more efficient project delivery. You will work in a multidisciplinary environment where Product, Design, Engineering, and DevOps collaborate closely from discovery through production. The challenge is to deliver scalable, high-quality software while helping the team make effective, responsible use of AI-assisted engineering.

What does the role involve?

You will design, build, and evolve full-stack applications and cloud-native services for data-intensive use cases. Alongside hands-on development, you will influence architecture, strengthen engineering practices, and help colleagues advance their use of AI coding agents.

• You design and build full-stack web applications and platform services using React, TypeScript, Node.js, and Python.
• You develop interactive map-based tools with real-time data integration, layer control, and spatial editing.
• You build resilient, scalable, and cost-aware cloud services that support multiple tenants, large geodata volumes, and concurrent users.
• You contribute to architectural decisions and collaborate with Product and Design from the discovery phase onward.
• You work with DevOps colleagues to ensure that the services you build run reliably in production.
• You improve code reviews, testing practices, and engineering guardrails so that rapid delivery maintains a high quality standard.
• You use AI coding agents through task decomposition, context engineering, reusable instructions, integrations, and automated checks.
• You mentor colleagues, share practical experience, and help the team make sound decisions about architecture, security, trade-offs, and code quality.

Who are we looking for?

You are an experienced full-stack engineer who can reason across the entire system, from user-facing interfaces to cloud services and production operations. You combine strong technical judgment with the communication skills to work effectively alongside Product, Design, DevOps,

and other developers.

• Experience: At least 8 years of full-stack development experience, preferably in enterprise or data-intensive environments.
• AI-assisted development: Demonstrable production experience with tools such as Claude Code, Cursor, or GitHub Copilot, including task decomposition, context engineering, and verification of generated output.
• Additional expertise: Experience with mapping libraries, spatial data, or identity and access management is beneficial; an interest in marine survey and remote sensing data is also valuable.
• Quality and collaboration: You apply strong testing discipline, evaluate generated code critically, communicate clearly, and contribute through pairing, mentoring, and knowledge sharing.