Lead Fullstack Software Engineer (Javascript - Barcelona)

Barcelona, Spain·Posted today

javascriptreactnestjsnodenode.jsgraphqlaws

We are: Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact. With the right people and the right ideas, there’s no limit to what we can achieve Are you a fit? Sounds awesome, right? Now, let’s make sure you’re a good fit for the role: Key Responsibilities <ul data-start="757" data-end="2083"> <li data-section-id="ntxyte" data-start="757" data-end="922">Take full technical ownership of multiple products, including building new features, implementing technical improvements, and providing support to editorial teams.</li> <li data-section-id="jsv8sh" data-start="923" data-end="1030">Design, develop, and maintain scalable web applications using JavaScript, React, and Node.js.</li> <li data-section-id="9izunm" data-start="1031" data-end="1123">Develop and maintain GraphQL APIs using Node.js, with NestJS experience as a plus.</li> <li data-section-id="1d3oa5g" data-start="1124" data-end="1198">Design and optimize cloud-based applications and services using AWS.</li> <li data-section-id="1l6s9yy" data-start="1199" data-end="1304">Work with PostgreSQL and other database technologies to build reliable and scalable data solutions.</li> <li data-section-id="2gqzre" data-start="1305" data-end="1375">Lead and provide technical direction to a team of junior developers.</li> <li data-section-id="1nmcxvc" data-start="1376" data-end="1521">Establish and enforce software engineering best practices, including coding standards, code reviews, Git, CI/CD, and automated testing.</li> <li data-section-id="uokk0f" data-start="1522" data-end="1631">Continuously optimize application architecture, performance, scalability, maintainability, and reliability.</li> <li data-section-id="12vmu1o" data-start="1632" data-end="1743">Build and promote reusable components and solutions that can be leveraged across multiple products and teams.</li> <li data-section-id="1m3581w" data-start="1744" data-end="1883">Collaborate with stakeholders and technical teams to communicate solutions, demonstrate work, identify risks, and drive projects forward.</li> <li data-section-id="cfe9ew" data-start="1884" data-end="1979">Work effectively in a fast-paced, agile environment while meeting critical project timelines.</li> <li data-section-id="1scuogj" data-start="1980" data-end="2083">Provide technical guidance and independently drive solutions while seeking feedback when appropriate.</li> </ul> Must-have Skills <ul data-start="2109" data-end="3237"> <li data-section-id="7g93vb" data-start="2109" data-end="2190">5+ years of experience architecting and building scalable web applications.</li> <li data-section-id="1b5rfaa" data-start="2191" data-end="2291">Expert-level JavaScript skills with strong experience developing applications using React.</li> <li data-section-id="rz1ma2" data-start="2292" data-end="2358">Extensive experience building GraphQL APIs with Node.js.</li> <li data-section-id="1idcvu3" data-start="2359" data-end="2468">Strong experience with AWS, including: <ul data-start="2406" data-end="2468"> <li data-section-id="yhmu7c" data-start="2406" data-end="2410">S3</li> <li data-section-id="1o4ipo" data-start="2413" data-end="2418">EC2</li> <li data-section-id="1o4tpp" data-start="2421" data-end="2426">RDS</li> <li data-section-id="15bmvfs" data-start="2429" data-end="2442">API Gateway</li> <li data-section-id="p8du48" data-start="2445" data-end="2457">CloudFront</li> <li data-section-id="1p9wgfj" data-start="2460" data-end="2468">Lambda</li> </ul> </li> <li data-section-id="1k82oan" data-start="2469" data-end="2561">In-depth knowledge of database technologies with hands-on experience using PostgreSQL.</li> <li data-section-id="19m3goq" data-start="2562" data-end="2689">Real-world experience implementing and maintaining CI/CD pipelines using tools such as GitHub Actions or Jenkins.</li> <li data-section-id="9qzyk9" data-start="2690" data-end="2785">Strong understanding of software architecture, scalability, performance, and maintainability.</li> <li data-section-id="2mc3ae" data-start="2786" data-end="2924">Experience with software engineering best practices, including unit testing, code reviews, Git, documentation, and coding standards.</li> <li data-section-id="1d8s01o" data-start="2925" data-end="3000">Experience providing technical direction and mentoring junior developers.</li> <li data-section-id="1f6pwek" data-start="3001" data-end="3133">Strong communication and collaboration skills, with the ability to work effectively with technical and non-technical stakeholders.</li> <li data-section-id="5yhg1r" data-start="3134" data-end="3237">Ability to work independently, identify risks, and drive solutions in a fast-paced agile environment.</li> </ul> Nice-to-have: <ul data-start="3260" data-end="4160"> <li data-section-id="1t8vwps" data-start="3260" data-end="3527">AI Tooling Proficiency: Leverage one or more AI tools to optimize and augment day-to-day work, including coding, drafting, analysis, research, or process automation. Provide recommendations on effective AI use and identify opportunities to streamline workflows.</li> <li data-section-id="1ljeakv" data-start="3528" data-end="3557">Experience with NestJS.</li> <li data-section-id="13etend" data-start="3558" data-end="3667">Experience building reusable components, shared libraries, or platforms following an open-source mentality.</li> <li data-section-id="f4m8b" data-start="3668" data-end="3730">Experience working in the media and publishing industry.</li> <li data-section-id="tdtqcn" data-start="3731" data-end="3818">Experience building tools or platforms used by editorial, content, or newsroom teams.</li> <li data-section-id="6hum3z" data-start="3819" data-end="3896">Experience designing highly scalable and high-performance web applications.</li> <li data-section-id="1t3xvoh" data-start="3897" data-end="3978">Strong understanding of cloud-native and distributed application architectures.</li> <li data-section-id="zci8ue" data-start="3979" data-end="4061">Experience optimizing application performance, reliability, and maintainability.</li> <li data-section-id="cil1v8" data-start="4062" data-end="4160">Experience working with multiple engineering teams and driving technical standards across teams.</li> </ul> What we offer: <ul data-start="4182" data-end="4346"> <li data-section-id="m5scwt" data-start="4182" data-end="4209">A High-Impact Environment</li> <li data-section-id="1y0rsw8" data-start="4210" data-end="4250">Commitment to Professional Development</li> <li data-section-id="bvothj" data-start="4251" data-end="4287">Flexible and Collaborative Culture</li> <li data-section-id="18u2u3g" data-start="4288" data-end="4310">Global Opportunities</li> <li data-section-id="7y7yb3" data-start="4311" data-end="4330">Vibrant Community</li> <li data-section-id="16porri" data-start="4331" data-end="4346">Total Rewards</li> </ul> *Specific benefits are determined by the employment type and location. Find out more about our culture <a class="decorated-link" href="https://www.instagram.com/wizelineglobal/" target="_new" data-start="4455" data-end="4504">here</a>.

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