Frontend Software Engineer - React

SmartRecruiters, Inc.; Lisboa; Híbrido; EUR 45 000 - 75 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Global Tech Hub in Lisbon

Learning & Knowledge Exchange

Flexible Work Setup

Time Off & Wellbeing

Practical Everyday Benefits

SIXT Perks

Resumo da oferta

SIXT is seeking a Frontend Software Engineer (React) to turn product problems into precise, testable specifications for AI agents. You will own agent-driven features end-to-end, debug production issues, and ensure stable integration with backend systems.

The role emphasizes building robust React components and shipping updates with minimal guidance. The position fits a hybrid setup in Lisbon, offering learning exchanges, flexible hours, and voluntary wellbeing perks as part of SIXT’s global tech

Qualificações

• Bachelor's or Master's in Computer Science or a related field.
• 3–6 years of frontend software engineering experience.
• Experience turning product problems into clear specifications for AI agents.

Responsabilidades

• Translate ambiguous product problems into testable specs with success criteria.
• Collaborate with AI tools and build guardrails to maintain product stability.
• Drive agent-based tasks in small, verifiable steps and adjust when output drifts.
• Own shipped agents from production debugging to preventive measures like tests and lint rules.
• Deliver medium-to-complex features end-to-end with minimal guidance.
• Create production-ready, reusable React components and integrate with backend.

Conhecimentos

Frontend development

React

AI tool integration

Problem solving

Formação académica

Bachelor's/Master's in CS or related

Ferramentas

React

Descrição da oferta de emprego

Frontend Software Engineer - React (m/f/d)

• Full-time
• Legal Entity: Sixt Research Development Services, Lda.

Every SIXT rental starts on the web — search, offer, checkout — a funnel that serves millions of customers across 110+ countries. How we build it has changed: coding was never the bottleneck, judgment is. Engineers here turn ambiguous product problems into specifications precise enough for AI agents to execute, drive those agents in small, verifiable steps, and personally own what reaches production — backed by the technical depth to read, debug, and stand behind every change. It's a different kind of engineering, and we're not done shaping it. Join Team Orange and help shape how it gets built.

YOUR ROLE AT SIXT

• Turn ambiguous product problems into clear, testable specifications — success criteria and edge cases spelled out — that agents can execute against
• Work with AI tools, adapt and improve agentic ecosystem by building strong guardrails and processes that keeps the product stable
• Drive agents in small, verifiable steps, correcting and re-steering when the output drifts from intent
• Own what your agents ship to production: debug to root cause, and encode prevention — a test, a lint rule, an agent constraint — so the same issue is caught automatically next time.
• Ship medium-to-complex features end-to-end with minimal guidance
• Deliver production-quality, reusable React components and integrate reliably with backend

YOUR SKILLS MATTER

• Bachelor's/Master's in Computer Science or a related field, with3–6 years of frontend software engineering experience.
• Sets up agentic workflows: delegates well-scoped tasks to AI agents, reviews output critically for correctness, standards, and architectural drift, recognises low-value output and course-corrects before it merges — and can explain any of it.
• Shares agent workflows to speed up the team and onboard them on good AI practices, discuss trade-offs in reliability, performance, and correctness with the team
• Good problem-solving and communication with strong ownership across execution and delivery: collaborates with Product/peers, challenges unclear framing, builds judgment on architecture and outcomes

WHAT WE OFFER

• A Global Tech Hub in Lisbon

  Join a thriving international tech community and work alongside engineers, product experts, and business teams who turn ideas into real impact. Our hubs at Factory Lisboa in Beato and ARTs Lisboa in Parque das Nações are where great tech gets built

• Learning & Knowledge Exchange

  Level up through regular events with internal and external speakers. We value curiosity, continuous learning, and open exchange – across teams, disciplines, and borders

• Flexible Work Setup

  Two office days a week, flexible hours, and modern spaces built for both deep focus and team collaboration – work the way that brings out your best

• Time Off & Wellbeing

  Enjoy 28 vacation days per year, an additional day off on your birthday, one volunteer day annually, and private health insurance that also covers your spouse and children free of charge

• Practical Everyday Benefits

  Get a yearly Coverflex allowance and a daily meal allowance to make everyday life a little easier

• SIXT Perks

  Get exclusive rates on all SIXT services, with special discounts extended to your family and friends. Because great perks are even better when you can share them

About us:

We are a globally leading mobility service provider with a revenue of €4.00 billion and around 9,000 employees worldwide. Our mobility platform ONE combines our products SIXT rent (car rental), SIXT share (car sharing), SIXT ride (taxi, ride, and chauffeur services), and SIXT+ (car subscription), giving our customers access to our fleet of 350,000 vehicles, the services of 4,000 cooperation partners, and around 5 million drivers worldwide. Together with our franchise partners, we are present in more than 110 countries at 2,000 rental stations. At SIXT, top-tier customer experience and outstanding customer service are our highest priorities. We believe in true entrepreneurship and long-term stability and align our corporate strategy with foresight.