Senior Full-Stack Developer, NodeJS, Typescript

osapiens

Senior Full-Stack Developer shaping the future of BPT. Collaborating with teams to build and optimize full-stack solutions in Madrid's hybrid work model.

Posted 6/2/2026full-timeMadrid • 🇪🇸 SpainSeniorWebsite

Tech Stack

Tools & technologies

JavaScriptNode.jsReactTypeScript

About the role

Key responsibilities & impact

Design, build, and optimize full-stack features using modern back-end technologies, ensuring scalability and maintainability.
Develop and enhance innovative software solutions that automate complex compliance workflows for businesses of all sizes.
Collaborate closely with product managers, designers, and engineers in small, agile squads (4-6 people) to define, refine, and implement features.
Ensure high-quality, secure, and efficient code through rigorous reviews, automated testing, and continuous integration/deployment (CI/CD) practices.
Own the architecture and design of Typescript based solutions, optimizing for performance, reliability, and user experience.
Contribute to technical strategy and decision-making, identifying opportunities for innovation and process improvements.
Mentor and support junior developers, fostering a culture of learning and technical excellence within the team.

Requirements

What you’ll need

Strong experience (ideally 5+ yrs) in full-stack development, using Node.JS / TypeScript and React.JS.
Hands‑on experience leveraging AI‑guided development practices and collaborating within agentic, AI‑driven engineering environments.
Expertise in web services development and integration (REST etc).
Familiarity with Git for version control and collaboration.
Strong product mindset – you think beyond code, considering user experience, business impact, and scalability.
Agile experience – comfortable working in sprints, participating in stand-ups, and iterating quickly.
Excellent communication skills (C1 or equivalent) in English. German and/or Spanish skills are a plus, (but not necessary).

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account osapiens Website LinkedIn All Job Openings 201 - 500 employees Founded 2018 📋 Compliance 🏢 Enterprise ☁️ SaaS 💰 Series A on 2023-04 Compliance
Enterprise
SaaS osapiens is a company that offers an ESG solutions platform to help enterprises master ESG compliance, reduce risk, and increase efficiency through AI-driven solutions. The company provides a range of services to ensure compliance with various ESG regulations, such as the EU Deforestation Regulation (EUDR), Corporate Sustainability Reporting Directive (CSRD), and others. With a clientele of over 1,500 enterprises, osapiens offers tools for distribution, brand protection, and supply chain management among other features, ensuring transparency and efficiency across the value chain. Senior Full-Stack Developer, NodeJS, Typescript 🔥 2 minutes ago 🏢🏡 Madrid – Hybrid ⏰ Full Time 🟠 Senior 💻 Frontend Engineer / Web Developer JavaScript Node.js React TypeScript Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
Design, build, and optimize full-stack features using modern back-end technologies, ensuring scalability and maintainability.
Develop and enhance innovative software solutions that automate complex compliance workflows for businesses of all sizes.
Collaborate closely with product managers, designers, and engineers in small, agile squads (4-6 people) to define, refine, and implement features.
Ensure high-quality, secure, and efficient code through rigorous reviews, automated testing, and continuous integration/deployment (CI/CD) practices.
Own the architecture and design of Typescript based solutions, optimizing for performance, reliability, and user experience.
Contribute to technical strategy and decision-making, identifying opportunities for innovation and process improvements.
Mentor and support junior developers, fostering a culture of learning and technical excellence within the team. 🎯 Requirements
Strong experience (ideally 5+ yrs) in full-stack development, using Node.JS / TypeScript and React.JS.
Hands‑on experience leveraging AI‑guided development practices and collaborating within agentic, AI‑driven engineering environments.
Expertise in web services development and integration (REST etc).
Familiarity with Git for version control and collaboration.
Strong product mindset – you think beyond code, considering user experience, business impact, and scalability.
Agile experience – comfortable working in sprints, participating in stand-ups, and iterating quickly.
Excellent communication skills (C1 or equivalent) in English. German and/or Spanish skills are a plus, (but not necessary). Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score Similar Jobs Front End Tech Lead 🕒 3 days ago IRIUM 501 - 1000 🔒 Cybersecurity ☁️ SaaS Website LinkedIn All Job Openings Technical Lead Front End leading banking projects with Angular and React. Overseeing Microfronts and collaborating with customer for implementations. 🏢🏡 Madrid – Hybrid 💵 €42k / year ⏰ Full Time 🟠 Senior 💻 Frontend Engineer / Web Developer 🗣️🇪🇸 Spanish Required Angular React Microfrontend Developer 🕒 6 days ago IRIUM 501 - 1000 🔒 Cybersecurity ☁️ SaaS Website LinkedIn All Job Openings Microfrontend Developer at IRIUM, requiring 3+ years of experience in microfrontends with advanced English skills. Enjoy a hybrid work structure in Madrid. 🏢🏡 Madrid – Hybrid ⏰ Full Time 🟡 Mid-level 🟠 Senior 💻 Frontend Engineer / Web Developer 🗣️🇪🇸 Spanish Required Angular Frontend Developer 🕒 6 days ago knowmad mood 1001 - 5000 🤝 B2B 🏢 Enterprise Website LinkedIn All Job Openings Frontend Developer specializing in Angular at knowmad mood. Building robust, accessible UI components while working in a hybrid environment in Madrid. 🏢🏡 Madrid – Hybrid ⏰ Full Time 🟡 Mid-level 🟠 Senior 💻 Frontend Engineer / Web Developer 🗣️🇪🇸 Spanish Required Angular Bootstrap RxJS SCSS TypeScript Front End Engineer, Fullstack – Messaging Team 🕒 6 days ago Aircall 501 - 1000 📡 Telecommunications ☁️ SaaS 🏢 Enterprise Website LinkedIn All Job Openings Join Aircall as a Front End / Fullstack Engineer enhancing customer communication features using AI. Collaborate closely with engineering teams to deliver high-quality products in a dynamic environment. 🏢🏡 Madrid – Hybrid 💰 Venture Round on 2022-02 ⏰ Full Time 🟡 Mid-level 🟠 Senior 💻 Frontend Engineer / Web Developer JavaScript MySQL Node.js Postgres Prometheus React TypeScript Angular Microfrontend Developer 🕒 May 23 IRIUM 501 - 1000 🔒 Cybersecurity ☁️ SaaS Website LinkedIn All Job Openings Angular Microfrontend Developer at IRIUM in Madrid, requiring over 3 years of experience with reactive programming and microfrontend architecture. Work in a hybrid setting with strong team dynamics. 🏢🏡 Madrid – Hybrid ⏰ Full Time 🟡 Mid-level 🟠 Senior 💻 Frontend Engineer / Web Developer 🗣️🇪🇸 Spanish Required View More Frontend Engineer Jobs 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

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Hard Skills & Tools

full-stack developmentNode.jsTypeScriptReact.jsweb services developmentRESTautomated testingcontinuous integrationcontinuous deploymentAI-guided development

Soft Skills

communication skillsproduct mindsetmentoringcollaborationagile experienceinnovationprocess improvementteam supportlearning cultureuser experience consideration