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Senior Full-Stack Engineer (React/Next.js) - Advertising at Truelogic. Remote Location: LatAm. About Truelogic. At Truelogic we are a leading provider of nearshore staff augmentation services headquartered in New York. For over two decades, we’ve been delivering top-tier technology solutions to companies of all sizes, from innovative startups to industry leaders, helping them achieve their digital transformation goals.. Our team of 600+ highly skilled tech professionals, based in Latin America, drives digital disruption by partnering with U.S. companies on their most impactful projects. Whether collaborating with Fortune 500 giants or scaling startups, we deliver results that make a difference.. By applying for this position, you’re taking the first step in joining a dynamic team that values your expertise and aspirations. We aim to align your skills with opportunities that foster exceptional career growth and success while contributing to transformative projects that shape the future.. Our Client. Advertising Company, focused on delivering immersive marketing campaigns and web solutions. It combines design, development, and product education to build engaging microsites, homepage takeovers, and gamified experiences. . Job Summary. We are seeking a Full-Stack React Engineer with strong expertise in Next.js, including Next.js Middleware, to build end-to-end features from the data layer to the user interface. The ideal candidate has experience preparing large datasets for frontend applications, integrating multiple external APIs, and working with graph databases. They should be comfortable implementing performant server-side logic, optimizing data delivery, and collaborating across cross-functional teams.. Responsibilities. Build and ship end-to-end features using React and Next.js, from data layer to UI.. Implement and maintain Next.js Middleware for auth, routing, A/B tests, and request preprocessing.. Prepare large datasets for frontend consumption: aggregation, normalization, pagination, server-side filtering/sorting, and caching.. Integrate multiple external API sources (REST/GraphQL), handling auth, rate limiting, retries, and data shaping.. Design and implement backend endpoints/services in Node.js to serve performant, secure data to the UI.. Model and query graph databases for relationship-heavy features; expose graph data via APIs.. Write clear technical documentation and participate in code reviews and cross-functional collaboration.. Qualifications and Job Requirements. Professional experience as a Full-Stack React engineer, with strong React and Next.js (including Next.js Middleware).. Hands-on Node.js and JavaScript/TypeScript for building APIs and server logic.. Proven experience preparing/serving large datasets for frontend apps (pagination strategies, indexing, caching, streaming).. Expertise in integrating external APIs at scale (REST/GraphQL), including authentication, webhooks, and resilience patterns.. Practical experience with graph databases (e.g., Neo4j/Cypher, Amazon Neptune, JanusGraph).. Strong grasp of SSR/ISR, server components, and edge/runtime constraints in Next.js.. What We Offer. 100% Remote Work: Enjoy the freedom to work from the location that helps you thrive. All it takes is a laptop and a reliable internet connection.. Highly Competitive USD Pay: Earn an excellent, market-leading compensation in USD, that goes beyond typical market offerings.. Paid Time Off: We value your well-being. Our paid time off policies ensure you have the chance to unwind and recharge when needed.. Work with Autonomy: Enjoy the freedom to manage your time as long as the work gets done. Focus on results, not the clock.. Work with Top American Companies: Grow your expertise working on innovative, high-impact projects with Industry-Leading U.S. Companies.. Why You’ll Like Working Here. A Culture That Values You: We prioritize well-being and work-life balance, offering engagement activities and fostering dynamic teams to ensure you thrive both personally and professionally.. Diverse, Global Network: Connect with over 600 professionals in 25+ countries, expand your network, and collaborate with a multicultural team from Latin America.. Team Up with Skilled Professionals: Join forces with senior talent. All of our team members are seasoned experts, ensuring you're working with the best in your field.. Apply now!