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Experience Level
Senior
Qualifications
Proven experience as a Full-Stack Engineer or similar role. Extensive knowledge of Python and React. Strong understanding of RESTful APIs and web services. Experience with database management systems. Excellent problem-solving skills and attention to detail. Strong communication and teamwork abilities. Bachelor's degree in Computer Science or related field preferred.
About the job
Jobgether is looking for a Senior Full-Stack Engineer with strong experience in Python and React. This position is based in Spain and centers on building and maintaining web applications that improve how users interact with our platform.
What you will do
Design, develop, and maintain web applications using Python and React
Work closely with team members to deliver features that enhance the user experience
Contribute to technical decisions and help set the direction for ongoing projects
Mentor junior developers and support their growth
Requirements
Strong knowledge of both front-end and back-end development
Proficiency in Python and React
Experience working in an agile team setting
Ability to collaborate effectively and communicate technical concepts clearly
About Jobgether
Jobgether is a leading company dedicated to connecting talent with opportunities. We pride ourselves on our innovative approach to recruitment and our commitment to creating a flexible work environment that empowers our team members.
Join Celonis, the premier global leader in Process Intelligence technology and one of the fastest-growing SaaS companies worldwide. At Celonis, we see a tremendous opportunity to enhance productivity by embedding AI, data, and intelligence at the heart of business processes. We invite you to be part of our mission!The Team:Celonis Services is a dynamic strat…
Who We Are Moniepoint is a pioneering fintech company dedicated to creating modern financial solutions for individuals and businesses in high-growth markets. Our offerings include payments, banking, credit, and financial management tools that empower people and businesses to manage their finances confidently and efficiently. Our mission is clear: to promote financial happiness for every African, everywhere. We have experienced rapid growth in Nigeria and the UK and are now expanding our product, engineering, and analytics teams. Our work includes developing robust financial infrastructure and crafting user-friendly experiences that address real challenges in emerging markets. With over a million new customers joining us each month and processing hundreds of billions in payments annually, our ecosystem supports tens of millions of users. Our teams thrive in a dynamic, high-impact environment, collaborating with leaders from renowned companies such as Glovo, Bolt, Monzo, Klarna, Checkout.com, and Tide. If you're looking to build the data science function from the ground up and work with one of Africa's largest fintech datasets, now is the perfect time to join us. About the Role: At Moniepoint, data is essential to our mission. We prioritize our customers, and your contributions will facilitate informed, data-driven decisions that directly influence our business's success. We are in search of a highly motivated, data-driven Senior Data Scientist to enhance Moniepoint’s consumer lending strategies on a large scale. You will develop models, run experiments, and generate insights that define our approach to acquiring, underwriting, and retaining millions of customers across Nigeria and Africa. This critical role will shape our pricing, credit limit modeling, and credit model deployment strategies within a fast-growing business, providing unprecedented access to millions of customers. Collaborating closely with our exceptional Consumer Credit team, you will influence our risk ranking, product offerings, and data infrastructure, crafting personalized solutions for our clients. You will be responsible for developing our initial suite of credit risk models and fostering a culture that balances machine learning with traditional methods, inspiring innovation within the team and for our customers. Positioned at the crossroads of data science, credit risk, and product development, you will convert complex data into actionable strategies that drive growth and ensure stellar portfolio performance.
atexis seeks a Senior CAMO Engineer (Freelance) to join the team in Seville. This freelance position centers on maintaining high standards of compliance and safety within aviation maintenance. The role ensures that all aircraft maintenance activities meet regulatory requirements and follow industry best practices. Key responsibilities Monitor and maintain compliance with Continuous Airworthiness Management Organization (CAMO) regulations. Review and oversee aircraft maintenance procedures to confirm alignment with legal and industry standards. Support the organization in achieving safety objectives for all managed aircraft. Requirements Extensive experience working with CAMO regulations and processes. Strong analytical and problem-solving abilities. Demonstrated ability to work independently as a freelancer. This freelance role provides flexibility while allowing direct impact on aviation safety and compliance at atexis in Seville.
Shift Technology is revolutionizing the insurance sector with its cutting-edge AI platform. By integrating generative, agentic, and predictive AI, we are transforming underwriting, claims processing, and fraud detection, leading to significant operational efficiency and outstanding customer experiences. Our solutions are trusted by top insurers across the globe, delivering AI capabilities when and where they are most needed to achieve measurable business outcomes.At Shift, we foster a culture of innovation and trust, driven by our mission to reshape the insurance industry through our SaaS offerings. Our team comprises individuals from over 50 countries and cultures, collaboratively working to build the future of insurance. The Data Science Team:Our Data Science team tackles a variety of challenges and plays a key role in defining and developing our product suite, specializing in fraud detection, anti-money laundering, and claim automation. We leverage extensive technical and professional knowledge in data science, data engineering, coding, and client interaction, while also working with diverse data types including structured data, unstructured text, documents, and images.Your Key Responsibilities:Establishing and deploying data processing pipelines, encompassing data reception (both batch and real-time), data cleaning, information extraction, and calibration of fraud detection models.Collaborating with clients to comprehend their requirements and integrating their feedback to enhance our solutions.Conducting research and development to foster product innovation in areas such as machine learning, natural language processing, image analysis, trend analysis, and chatbots.Assisting the sales team by engaging in product demonstrations for prospects.Participating in the complete Data Science product lifecycle: Understanding the interconnections between sales, legal, product, and engineering to deliver AI solutions to clients.
Join Our Expanding Data Dream Team!Forget the formalities of titles; we prefer to call this role Data Engineer .As a crucial member of our international Data squad, you will design and implement bespoke solutions that impress our clients. We are in search of a dedicated Data Engineer with a robust technical foundation. Your mission? To train, deploy, and activate groundbreaking innovations — and that’s just the beginning!Here’s what you can expect:Address the distinctive challenges of Data-driven software alongside a team of exceptional minds.Engage in state-of-the-art projects utilizing the latest technologies to stretch boundaries and create a tangible impact.Choose your work style: whether you prefer the comfort of your home or the collaborative atmosphere of our offices.AGILE is not just a concept for us — it’s our operational ethos. Multidisciplinary teams? Absolutely. Full project ownership? Definitely.Are you ready to tackle projects that truly matter, alongside a team that shares your passion? Let's make it happen!
Join our dynamic team at lastminute.com, where we are dedicated to enhancing the travel experience for millions of holidaymakers. As a Data Engineer, you will play a crucial role in utilizing data to elevate business performance. If you thrive on tackling challenging projects and have a strong skill set in data modeling, we want to hear from you!About the Role:Position: Data EngineerWork Arrangement: Remote within SpainTeam: Data Analytics TeamExperience Level: ProfessionalContract Type: Permanent, full-time (36 hours/week)Your Contributions:Architect & Build: Design and manage scalable data pipelines and architectures using Google Cloud Platform (GCP).Innovate: Introduce new technologies and leverage AI to enhance data processes and insights.Collaborate: Work closely with stakeholders to understand their data requirements and deliver effective solutions.Prioritize: Strategically manage project demands to maximize business value.Ensure Quality: Maintain the performance and reliability of data systems through thorough testing and maintenance.
Role overview As a Freelance CAMO Engineer at atexis, this contract role centers on Continuing Airworthiness Management for aviation projects in Seville. The position involves collaboration with both internal teams and external clients to maintain high standards of safety and compliance. What you will do Ensure all activities meet current aviation regulations and standards Create and revise maintenance programs for different aircraft types Partner with atexis specialists to refine operational processes Provide technical support and documentation to clients Location This freelance role is based in Seville and supports ongoing aviation projects on site.
Mindrift is seeking talented AI Workflow Engineers to contribute to the Tendem project (https://tendem.ai/), where you will develop intelligent automation systems driven by large language models (LLMs) within a collaborative AI and human environment.In this position, referred to as an AI Pilot at Mindrift, you will work alongside Tendem Agents responsible for repetitive tasks. Your role will involve applying structured reasoning, prompt engineering skills, and quality assurance to create scalable and dependable AI-enabled workflows.This part-time remote role is perfect for professionals with practical experience in LLM integration, prompt design, and AI-driven automation systems.About MindriftThe Mindrift platform connects experts with AI projects from leading technology innovators. Our goal is to harness the capabilities of Generative AI by leveraging real-world expertise from around the world.Role OverviewThis freelance opportunity within the Tendem project requires you to design, construct, and enhance workflows that incorporate LLM APIs, establishing scalable systems for content generation, communication, and automation.Key ResponsibilitiesDesign and assess workflows that integrate LLM APIs (OpenAI, Claude, Gemini, or similar).Create and enhance AI-powered automation systems for content generation, enrichment, and communication.Develop and optimize prompt frameworks to ensure consistent, high-quality outputs throughout workflows.Establish systems for personalized automated outreach (email, messaging flows, lead enrichment).Structure and preprocess data to guarantee stable model behavior and reliable outputs.Analyze and enhance AI-driven pipelines for scalability, efficiency, and accuracy.
About the Role Neoris is hiring a Senior Data Engineer with AWS experience for a fully remote position based in Spain. This role focuses on designing and implementing data solutions that support analytics and business intelligence efforts. What You Will Do Build and optimize data pipelines and data architectures. Work closely with data scientists and analysts to enable data-driven decisions. Apply best practices to maintain data quality and integrity. Use AWS services to strengthen and expand the data infrastructure. Location Remote within Spain.
Shape the Future of CryptocurrencyJoin a dynamic team at Kraken, where we passionately explore and leverage the potential of cryptocurrency and blockchain technology.Why Choose Kraken?As a mission-driven organization, Kraken is dedicated to fostering the widespread adoption of cryptocurrency, empowering individuals to achieve financial freedom. Our commitment to our mission has drawn exceptional talent in the crypto space for over a decade.Before applying, we encourage you to review our Kraken Culture page to understand our values and mission better. We also expect candidates to familiarize themselves with the Kraken app. Discover how to create a Kraken account here.As a fully remote company, we have Krakenites in over 70 countries, speaking more than 50 languages. Our innovative team creates high-quality crypto products tailored for experienced traders, institutions, and newcomers alike. Kraken is devoted to industry-leading security, crypto education, and world-class client support through our offerings like Kraken Pro, Desktop, Wallet, and Kraken Futures.Join us at Kraken and help build the future of crypto!
Role Overview 10xteam is seeking a Senior Analytics Consultant with a focus on AI training. This is a freelance, remote position based in Spain, with a commitment of 8 to 20 hours per week. What You Will Do Apply analytics and artificial intelligence knowledge to support project direction Advise on data-driven decision-making and strategy Contribute expertise to AI training initiatives Position Details Freelance contract Remote work 8-20 hours per week Based in Spain
About UsConstructor is revolutionizing the ecommerce landscape with our next-generation search and discovery platform designed to enhance crucial metrics such as revenue, conversion rates, and profitability. Our proprietary search engine, developed entirely in-house, leverages advanced technologies like transformers and generative LLMs to deliver exceptional search experiences, personalized recommendations, and intelligent shopping agents. As the largest department within our organization, our engineering team is dedicated to maintaining the superiority of our technology, consistently outperforming competitors in A/B testing. Our platform is engineered for extreme scalability, handling over 1 billion queries daily across 150 languages and about 100 countries, serving major ecommerce players like Sephora, Under Armour, and Petco. We pride ourselves on our problem-solving capabilities and commitment to improving the experiences of both our customers and colleagues, fostering a culture centered on empathy, openness, curiosity, and continuous improvement. Founded in 2019 by Eli Finkelshteyn and Dan McCormick, Constructor is a U.S.-based company leading the charge in AI innovation.About the TeamThe Experiments team at Constructor is responsible for creating a robust experimentation platform that includes traffic allocation, exposure logging, metric computation, statistical analysis, and user interfaces for launching experiments and interpreting results. Our platform is designed for both internal use and by customers conducting experiments with live traffic, focusing on enhancing the speed, reliability, and interpretability of experiments. Unlike conventional experimentation tools, our platform must accommodate a diverse range of customer integrations, traffic patterns, and industry-specific constraints, presenting unique engineering challenges that have significant real-world implications.The RoleThis position primarily focuses on backend development (Python services and data-intensive systems). While you will occasionally engage with the Dash UI and contribute to Spark jobs, these areas are not the central focus of the role. We prioritize correctness, observability, and product usability over complex infrastructure.Technologies: Python, FastAPI, PostgreSQL, Plotly Dash, PySpark/Databricks, AWS, CloudWatch, Sentry. (Note: Spark-related work constitutes approximately 5–10% of the role — we do not expect you to be a data engineer or manage the data platform.)What You’ll DoDevelop and maintain backend services for experiment assignment, logging, and report generation.Enhance the scalability, performance, and reliability of experiment reporting pipelines.Implement product-facing features in the UI to assist users in launching experiments and analyzing results.
Join Mindrift as a Freelance DevOps Engineer (Automation Systems) to contribute to our innovative Tendem project (https://tendem.ai/). In this role, you will be instrumental in architecting and sustaining a robust infrastructure that supports automated workflows within a hybrid AI and human-centric environment.As an AI Pilot, you will work closely with Tendem Agents who manage repetitive tasks, leveraging your expertise in infrastructure management, system reliability, and performance optimization to ensure efficient and scalable automation pipelines.This part-time remote position is perfectly suited for seasoned professionals with a proven track record in cloud infrastructure, system deployment, and high-load automation environments.
About UsIkerian AG (formerly RetinAI Medical) is an innovative and rapidly expanding medical device software firm based in Bern, Switzerland. Our driving mission is to empower healthcare professionals to make timely decisions through cutting-edge AI and data management solutions focused on disease screening and monitoring. Become a part of our diverse team comprising entrepreneurs, developers, researchers, and commercial experts who are collectively redefining the future of healthcare.Job DescriptionWe are in search of a talented Rust Engineer with a strong enthusiasm for data interoperability to join our dynamic team. The ideal candidate will be an adept problem-solver with extensive expertise in Rust programming and a thorough understanding of data standards. Your role will involve designing and developing robust, scalable, and efficient systems that manage complex data, ensuring seamless integration and optimal performance.Key Responsibilities Develop clean, maintainable, testable, and efficient code utilizing the Rust programming language. Collaborate with team members to cultivate a culture of knowledge sharing and teamwork aimed at producing high-quality software. Contribute to establishing best practices for software development, testing, and deployment. Mentor junior engineers, fostering their skill development and enhancing their contributions. Design and implement scalable solutions by utilizing RESTful APIs and web services. RequirementsA Master's degree in Computer Science, Computer Vision, or a related field, or equivalent experience in open-source projects. 1-2 years of demonstrable experience with Rust and 5 years in data interoperability or image processing. Proficient in Rust programming within a production environment. Familiarity with medical data interoperability standards, such as DICOM or FHIR. Strong understanding of image processing, image compression, and data serialization principles. Experience with version control systems, particularly Git. Exceptional problem-solving abilities and meticulous attention to detail. Solid debugging and testing capabilities. Excellent communication skills in English, both verbal and written. Ability to work independently and collaboratively within a team. Demonstrated entrepreneurial spirit and cooperative mindset. Availability to work during Central European Time (CET) business hours. Desirable Skills (optional) Familiarity with Python. Knowledge of web frameworks such as Axum and web APIs (e.g., REST, RESTful, GraphQL). Understanding of basic networking concepts, including TCP/IP, TLS encryption, and DNS. Exposure to computer vision techniques (traditional or machine learning). Benefits A chance to be part of an exceptional team shaping the future of healthcare. Competitive salary and benefits package.
Are you driven by a passion for artificial intelligence and possess expertise in analyzing diverse content types?We are in search of meticulous candidates with native-level proficiency in Catalan to contribute to AI training initiatives. Responsibilities will encompass prompt evaluation, multimedia content analysis, text assessment, and corrections, among other tasks.This role offers a remote, freelance position.Ideal Candidate Profile Must possess native-level fluency in Catalan Proficient in English Previous experience in content review, annotation, or evaluation is advantageous Exceptional attention to detail with the capability to categorize content accurately Comfortable engaging with both written and audio/video materials Ability to adhere to detailed instructions and deliver constructive feedback consistentlyWhat We Provide Complimentary access to our state-of-the-art NMT technology, complete with comprehensive training and support Quick payments through Tipalti — no invoicing necessary A chance to be part of groundbreaking advancements in AI and content comprehensionIf you are interested, please submit your updated resume in English.AI is revolutionizing communication worldwide, and LILT is at the forefront of this transformation.LILT's mission focuses on making global information accessible to all, regardless of the language spoken. Join our diverse community that thrives on innovation and excellence. Our collective expertise and individuality deliver multilingual AI and human-verified services to enterprises, governments, and AI developers globally.Earn an income. Enjoy your work. Advance global knowledge. Engage in diverse projects from anywhere, anytime. Receive fair and prompt compensation, while expanding your professional network within a supportive community — all facilitated by a streamlined application process designed for your expertise.
At Datavant, we are revolutionizing healthcare data collaboration. Our mission is to ensure that health data is secure, accessible, and actionable for organizations throughout the healthcare landscape, including providers, health plans, researchers, and life sciences companies. From assisting single patients with their medical records to spearheading the AI transformation in healthcare, our team, known as Datavanters, is at the forefront of how data is interconnected and utilized to enhance health outcomes.Become a Part of Our Vision at the Datavant Life Sciences Tech Hub in BarcelonaAs we expand our global presence with the establishment of our Life Sciences Tech Hub in Barcelona, we invite skilled technical professionals who are product-focused and impact-oriented to join us in shaping the future of healthcare technology.Our Life Sciences technology is pivotal in clinical research, real-world evidence generation, pharmacovigilance, and data collaboration across the healthcare ecosystem. As a Backend Engineer at our Life Sciences Tech Hub, you will architect and implement systems that facilitate secure, privacy-conscious access to high-quality healthcare data utilized by pharmaceutical companies, biotech innovators, and research organizations globally. Your contributions will be integral in developing new therapies, expediting clinical trials, and enhancing patient outcomes by ensuring that essential data is interoperable, scalable, and reliable.Careers at Datavant empower you to leverage your technical acumen and problem-solving abilities in pursuit of our mission: to ensure that every healthcare decision is informed by the right data, at the right time, in the right format. We are on the lookout for innovators, problem-solvers, and proactive individuals ready to drive change and build upon our success.
Join Our Team at seQuraAt seQura, we are pioneers in delivering innovative, flexible, and user-friendly payment technologies that empower merchants to acquire, convert, and retain customers effectively.Our tailored solutions enhance sales performance across various sectors, addressing unique challenges in Retail, Education, Eyewear, Repairs, and Travel. We also elevate the shopping experience for consumers seeking value and flexibility through new payment options, including interest-free credit and comfortable installment plans of up to 24 months.Founded in Barcelona, seQura is a dynamic fintech company experiencing rapid growth throughout Southern Europe and Latin America, boasting a remarkable 50% CAGR and nearing 100 million in Annual Recurring Revenue. With over 5,000 businesses and nearly 2 million satisfied customers, we pride ourselves on our exceptional reputation, reflected in an NPS of 87%, a Trustpilot score of 4.7/5, and a Glassdoor rating of 4.7/5.The Opportunity We are seeking a proactive and strategic Data Engineering Lead to spearhead our data engineering initiatives and mentor our expanding team of engineers. You will play a pivotal role in designing scalable data architectures, optimizing data pipelines, and ensuring the integrity of our data across the organization. Depending on your expertise and experience, you may also oversee data analyst workflows and team management.Challenges You'll Tackle Lead, mentor, and develop the data engineering team, establishing best practices in architecture, development, and operational processes.Design and implement robust, scalable, and secure data pipelines and data lake architectures.Collaborate effectively with data analysts, data scientists, and business stakeholders to grasp data requirements and deliver impactful solutions.Take ownership of ETL/ELT processes, ensuring data quality, version control, and governance.Enhance performance across data workflows, striving for efficiency and minimal downtime.
Note: Only candidates located in Spain will be considered. Visa sponsorship is not available. Lynx Financial Crime Tech S.A develops AI-driven systems to detect and predict behavioral patterns in financial transactions. The team draws on backgrounds in both finance and academia, focusing on self-learning tools that support low-latency processing for clients in banking, fintech, and commercial sectors. Their solutions work across on-premises and cloud environments. The company values vision, agility, and speed, aiming to build trust with customers and encourage proactive risk management. Lynx supports diversity and equal opportunity, welcoming people from all backgrounds. Role overview This Madrid-based Software Engineer (Python) position centers on building and maintaining an AI-powered anti-money laundering (AML) tool. The platform relies on Big Data and real-time processing to deliver self-learning solutions for the financial sector. Main responsibilities Analyze requirements and contribute to solution design. Develop and maintain a cloud application for AML detection in financial environments. Assess system performance and identify areas for speed improvements. Conduct quality assurance testing to validate new features and changes. Create and manage test cases. Diagnose and resolve software issues. Promote best practices in the use of development repositories and tools.
Join Voodoo's Innovative Team as a Freelance AI EngineerAre you ready to redefine the gaming landscape? Voodoo, a leading tech company established in 2013, is on a mission to entertain the world through engaging mobile games and applications. With a robust workforce of 800 employees and an astounding 7 billion downloads, we proudly stand as the third-largest mobile publisher globally, trailing only Google and Meta. Our impressive portfolio features blockbuster titles like Hole.io, Mob Control, and Block Jam, along with trending apps such as BeReal and Wizz.This is a fully remote opportunity available within CET ±3h, allowing you to work from anywhere while being part of our dynamic team.Be Part of a Winning TeamBy joining our Live Games team, you'll collaborate with industry experts on iconic games while exploring thrilling entrepreneurial ventures. Our diverse portfolio of over 10 hybrid games generates more than $20 million annually, making us the largest and most successful hybrid publisher worldwide.Your MissionWe are looking for a visionary AI Engineer to embark on a transformative one-month mission with our Live Studios, focusing on Hole.io. Your objective will be to harness advanced technology to enhance our production processes, allowing our developers and artists to focus on creating exhilarating gaming experiences rather than repetitive tasks.Key ResponsibilitiesAudit & Identify: Conduct a thorough analysis of our game development lifecycle—from asset creation to QA—to pinpoint inefficiencies that can be resolved through AI.Strategic Roadmap: Formulate a prioritized integration plan for AI technologies (LLMs, Generative Art, Auto-testing) that promise the highest return on investment for our studio.Workflow Optimization: Create tailored AI-driven workflows and tools to automate routine tasks without compromising quality.Hands-on Prototyping: Develop and showcase proof-of-concept AI tools compatible with our Unity-based production environment.Knowledge Transfer: Equip our senior leadership and technical teams with the skills to sustain and evolve these AI initiatives.
Role overview Jobgether is hiring a Freelance DevOps Engineer (Automation Systems) to join its remote team in Spain. This contract role focuses on designing, scaling, and maintaining infrastructure that supports automation workflows in a hybrid AI and human environment. What you will do Build and maintain infrastructure for automation systems, with an emphasis on high availability and reliability. Scale systems to support large volumes of automated processes. Set up and manage monitoring tools to ensure strong system observability. Troubleshoot and resolve issues in high-load environments. Collaborate with AI-driven agents to keep systems stable and fault-tolerant. Who thrives here This contract fits engineers who enjoy solving infrastructure challenges and improving automation at scale. Hands-on experience and a proactive mindset toward system performance and reliability are valued. Location and contract Remote freelance position Must be based in Spain
