react English-speaking jobs in Valladolid

About KlientBoost KlientBoost is a performance-driven digital marketing agency specialising in Paid Media and Conversion Rate Optimisation (CRO). Working with fast-growing startups and established brands worldwide, KlientBoost focuses on generating revenue, not just traffic, through experimentation, data-backed strategies and high-impact creative.

Essential duties and responsibilities of the job for:Management of the sales budget and business objectives in the assigned area. Manage and lead the assigned sales team, using the appropriate tools and means to achieve their quantitative and qualitative objectives and applying the company's commercial policy, being responsible for the sales established in their region and its profitability.

Data EngineerAsset Performance & Renewable Energy AnalyticsThe opportunityAn established renewable energy and digital solutions business is expanding its Asset Performance Management (APM) technology team and is hiring an experienced Data Engineer to support large-scale operational renewable assets.

Join a fast-paced, tech-driven team where you’ll help German-market businesses launch and grow high-performing digital advertising campaigns. In this role, you’ll onboard new clients, build trusted relationships, drive adoption, reduce churn, and uncover opportunities for growth—supported by relocation assistance and private health insurance.

We’re looking for a Product Owner to help deliver high impact digital products within the domain of intelligent maintenance systems. You’ll play a key role in a product-led, agile environment, working with technology, data and automation to improve operational performance and drive measurable business value.

Software EngineerA fantastic opportunity for a driven Software Engineer to join a leading Quantum AI company, where you will work on cutting-edge solutions that make AI faster, greener, and more accessible. You’ll be working alongside world-leading experts in quantum computing and AI, developing solutions that deliver real-world impact for global clients.

About GTT:GTT is a leading global provider of secure cloud networking solutions for multinational organizations. We design and deliver solutions that leverage advanced cloud, networking and security technologies. We complement our solutions with a suite of professional services and exceptional sales and support teams in local markets around the world.

Our missionWe turn data into better healthcare. With our insights, we make healthcare more affordable, and better, and we improve the patient’s and clinicians’ experience. Your impact and responsibilitiesAs a Senior Project Manager, your role focuses on providing insights the use of medicines in the real world to support data driven decision making and optimize healthcare.

AI Engineer - competitive salary - Madrid, Spain A fast-growing technology consultancy is building its AI capability in Madrid and is seeking an AI Engineer to join the team. The organisation partners with clients across financial services and investment, developing robust, real-world AI systems that support complex, high-stakes analytical and commercial decision-making.

At Technip Energies we are a world-leading engineering and technology company, with more than 60 years of experience, focused on accelerating the energy transition together with our clients and partners.

We are looking for a Renewals Support position for an important software company located in Barcelona. Responsibilities:Manage smaller-value renewals directly with customers or via resellers, ensuring timely execution. Engage proactively with internal sales teams, customers, and resellers to support renewals.

Master Data Analyst/EngineerMission: Lead and own the Master Data strategy for our company's data ecosystem, ensuring data quality, consistency, and harmonization across all analytical platforms and business systems.

We are proud to be partnering with a global organisation seeking to appoint a strategic and dynamic Competition Lawyer to support its European operations across a wide range of competition law matters. This role offers the opportunity to play a key part in shaping the transformation of the organisation's global legal function.

You will become among 900+ Guardians worldwide spread across 50+ countries, embracing YOUR unique approach to work. Our vision of the future of work is “work in any way” which offers flexibility for where you work, empowering you to define your ideal work environment, unbound by the traditional notions of what work should look like. Most importantly, it puts people first!

At Ayesa, we grow with you! At Ayesa, we dont wait for the future, we lead it. Through #technology and engineering, we make it possible, turning challenges into opportunities, concepts into solutions, and vision into real impact. Step by step, we are moving closer to a better future. With your passion, talent, and determination, we will continue to transform the present and build the future.

We are a technology-led healthcare solutions provider. We are driven by our purpose to enable healthcare organizations be future ready. We offer accelerated, global growth opportunities for talent that’s bold, industrious and nimble. With Indegene, you gain a unique career experience that celebrates entrepreneurship, and is guided by passion, innovation, collaboration and empathy.

Game Path is working with a growing Mobile Game Developer based in Barcelona, Spain, actively seeking a Senior 2D Animator to join their established team on a newly developed and original casual gaming project. The role is permanent and onsite . What You’ll Do: Create expressive 2D character and environment animations for mobile titles.

We're hiring a Backend Engineer - someone who'll own the backend systems that power our crypto and self‐custody platform. You'll bring deep expertise in Go, and TypeScript. What you'll do Design, implement, and operate scalable, resilient backend services handling millions of API requests per month.

NET / SharePoint Developer & Technology LeadPosition Type:PermanentStart Date:ASAPLocation:Remote from SpainContact:Franci | +49 89 23 88 98 55Job Description:For this role we require a minimum of 7 years of proven experience as developer and technology lead, with solid background in managing enterprise Microsoft solutions and critical releases with high visibility.

⚓Get ready to set sails and navigate the rindus wave ⛵️ABOUT USWe're rindus, a People company. We love IT professionals, and our passion is to help and empower our team to reach their full potential, grow, and achieve their best. Because growth is in our mindset, we've been doing it since 2017, closely with our German Partners,helping them shape their software development teams.