Freelance Quantum Research Scientist | AI Trainer with Python Expertise

Please submit your CV in English and indicate your level of English proficiency.Mindrift is a dynamic platform that connects talented specialists with project-based AI opportunities for top-tier tech companies, focusing on the testing, evaluation, and enhancement of AI systems. Note that participation is project-based and does not lead to permanent employmen…

We invite you to submit your CV in English and specify your English proficiency level.Mindrift connects talented professionals with project-based AI opportunities at leading technology firms, specializing in the testing, evaluation, and enhancement of AI systems. Please note that participation is project-based and does not constitute permanent employment.Key ResponsibilitiesWhile each project presents distinct challenges, contributions may include:Designing innovative computational data science tasks that emulate real-world analytical workflows across various sectors including telecom, finance, government, e-commerce, and healthcare.Developing tasks that require Python programming solutions (utilizing libraries such as Pandas, Numpy, Scipy, Sklearn, Statsmodels, Matplotlib, and Seaborn).Ensuring tasks are computationally demanding and cannot be addressed manually within reasonable timeframes (days or weeks).Creating problems that necessitate complex reasoning chains in data processing, statistical analysis, feature engineering, predictive modeling, and extracting insights.Designing deterministic problems with reproducible outcomes: avoiding stochastic elements or requiring fixed random seeds for precise reproducibility.Grounding tasks in real business scenarios: including customer analytics, risk assessment, fraud detection, forecasting, optimization, and enhancing operational efficiency.Crafting end-to-end problems that encompass the entire data science pipeline (data ingestion → cleaning → exploratory data analysis → modeling → validation → deployment considerations).Incorporating big data scenarios that demand scalable computational strategies.Validating solutions using Python alongside standard data science libraries and statistical methodologies.Documenting problem statements clearly with relevant business contexts and providing verified correct answers.QualificationsThis role is ideal for Data Science specialists with experience in Python who are open to part-time, non-permanent projects. Preferred candidates will possess:Over 5 years of practical data science experience demonstrating a measurable business impact.A portfolio showcasing completed projects and publications that highlight real-world problem-solving capabilities.Expertise in Python programming for data science (including libraries such as pandas, numpy, scipy, scikit-learn, and statsmodels).Advanced knowledge in statistical analysis and machine learning, with a deep understanding of algorithms, methods, and their applications.Proficiency in SQL and database operations for data analysis and manipulation.Familiarity with GenAI technologies (LLMs, RAG, prompt engineering, vector databases).Understanding of MLOps practices and workflows for model deployment.Knowledge of contemporary frameworks (TensorFlow, PyTorch, LangChain).Strong written English skills (C1+ level).Application ProcessApply → Pass qualifications → Join a project → Complete tasks → Receive payment

Role overview Jobgether is looking for a Lead Senior Node.js Backend Developer based in Sweden. This role joins an engineering team dedicated to building secure, scalable backend systems that power digital finance services for users worldwide. The focus is on creating real-time, dependable infrastructure that supports financial products used across the globe. What you will do Design and develop backend infrastructure using Node.js, with a strong emphasis on reliability and security for financial platforms. Architect and maintain APIs and backend services that are essential to digital finance products. Work with distributed systems and optimize them for real-time performance. Collaborate with engineers in different regions, sharing technical knowledge and best practices. Contribute to the direction and development of next-generation financial products for a global audience. Work environment Remote-first setup, offering flexibility and autonomy. A team culture that values responsibility and encourages technical growth and innovation. Who thrives here Engineers who enjoy tackling complex technical challenges and building dependable systems. Those with a strong interest in backend architecture, distributed systems, and performance optimization. Developers motivated to contribute to products with a global reach.

Role Overview evolution is hiring a Senior Backend Engineer in Stockholm. This role focuses on designing and implementing backend systems that support the company's products. Collaboration with teams across disciplines is part of the daily work, with an emphasis on building applications that perform reliably at scale.

Join SQLI as a Backend Developer in Göteborg, where you'll play a pivotal role in transforming client ideas into robust digital solutions. We are looking for a passionate individual with a knack for creating scalable and efficient backend systems. This is your chance to be part of a dynamic team that values innovation, collaboration, and continuous learning.

Join Our Innovative Team!At Magnet Forensics, we are at the forefront of digital investigative technology, committed to empowering users through our cutting-edge software solutions. Our products are designed to acquire, analyze, and share vital evidence from a variety of devices, including computers, smartphones, tablets, and IoT devices. Our mission is to provide advanced tools that help protect businesses, communities, and nations by enhancing digital investigations. With a global clientele, our solutions are pivotal in modernizing how investigations are conducted, assisting law enforcement and security personnel in combating crime and safeguarding assets. As we continue to expand our international footprint, we are looking for talented individuals who are passionate about making a difference. Become a part of our dynamic and supportive environment where you can grow and thrive alongside a team of exceptional professionals. If you believe you align with our vision and are eager to contribute, we want to hear from you!Position OverviewAs a Senior Software Development Engineer in Test, you will take the lead in automating the testing processes for both our new and existing products. This role is instrumental in mentoring fellow team members, offering technical insight, and spearheading the development of internal engineering tools and quality frameworks. Collaborating closely with our development teams, you will ensure robust, reliable, and thorough testing practices by utilizing state-of-the-art technologies and industry best practices.

Join our dynamic team as a Senior Android Developer specializing in Kotlin, where you will oversee the development and maintenance of innovative applications tailored for a wide array of Android devices. Your key responsibilities will include creating seamless Android applications and integrating them with our back-end services. You will collaborate closely with a diverse group of engineers and developers across various infrastructure layers. Your commitment to collaborative problem-solving, sophisticated design, and delivering high-quality products is essential to our mission.

Please submit your CV in English and specify your English proficiency level. toloka-ai, in partnership with Mindrift, offers project-based contract opportunities for experienced data science engineers. Projects focus on testing, evaluating, and improving AI systems for leading technology clients. This is not a permanent employment role but rather contract work based on individual assignments. Role overview Freelance Data Science Engineers (Python & SQL) work on a variety of projects, each with unique analytical and computational challenges. Assignments involve designing original data science problems that reflect real-world business scenarios in sectors such as telecom, finance, government, e-commerce, and healthcare. Create computational problems that require advanced analytical workflows and cannot be solved manually in a short time. Design tasks solvable in Python, using libraries like Pandas, Numpy, Scipy, scikit-learn, Statsmodels, Matplotlib, and Seaborn. Develop scenarios involving data processing, statistical analysis, feature engineering, predictive modeling, and extracting business insights. Ensure each problem is deterministic and reproducible, using fixed seeds when randomness is necessary. Base challenges on real business needs, such as customer analytics, risk assessment, fraud detection, forecasting, optimization, and operational efficiency. Cover the full data science workflow: from data ingestion and cleaning to modeling, validation, and deployment considerations. Include big data scenarios that require scalable computational solutions. Validate solutions in Python with established libraries and statistical methods. Document each problem clearly, providing realistic business context and verified answers. Requirements Minimum 5 years of hands-on data science experience with measurable business outcomes. Portfolio of completed projects or publications showing practical problem-solving skills. Advanced Python programming for data science, including experience with pandas, numpy, scipy, scikit-learn, and statsmodels. Strong knowledge of statistical analysis and machine learning algorithms. Proficient SQL skills and experience with database operations for analysis. Familiarity with Generative AI tools and techniques such as LLMs, RAG, prompt engineering, and vector databases. Understanding of MLOps and model deployment workflows. Knowledge of frameworks like TensorFlow, PyTorch, or LangChain. Excellent written English at C1 level or above. Application process Submit your CV and indicate your English proficiency level. Complete the qualification steps. If selected, join a project. Work on assigned tasks. Receive compensation for completed work. Location: Remote , Sweden

At Kognity, we believe education has the power to transform lives. However, technology has yet to fulfill its promise for over a billion students worldwide. Our mission is to change that.As a dynamic EdTech scale-up with a team of 125, we are transforming learning experiences in over 120 countries. Our innovative platform replaces traditional textbooks by integrating engaging pedagogy with advanced AI and data analytics, empowering both students and teachers in various educational settings, from international institutions to U.S. high schools.Why join Kognity?Make an Impact – Your contributions will significantly affect the educational journeys of teachers and students across the globe, ensuring real-world outcomes.Ownership and Accountability – We value initiative and expect you to take ownership of your projects from inception to delivery, with a focus on results.Collaborate with Top Talent – You will work alongside passionate and intelligent colleagues to tackle complex challenges, in a high-paced environment.Foster Continuous Learning – We encourage personal and professional growth, with a focus on learning and improvement.Your Responsibilities:Develop and deploy full-stack features using Python and TypeScript, enhancing the user experience for teachers and students.Design and refine robust systems with an emphasis on best practices, including APIs, ORMs, caching, and testing, ensuring high performance and reliability.Continuously improve the codebase by simplifying and fortifying it, while elevating engineering standards.Manage problem domains comprehensively, from defining the technical strategy to delivering high-quality software promptly.Qualifications We Seek:Demonstrated experience in building impactful software within a fast-paced product environment.Proficiency in full-stack development with TypeScript and at least one server-side language such as Python, Ruby, or Node.js.Strong history of owning projects from conception to execution, demonstrating technical and strategic prowess.

Translate requirements into technical designs that guide development.Build robust C# client applications, including WPF and Windows services.Create C# web solutions leveraging Cloud technologies, ASP.NET, and MVC frameworks.Collaborate effectively as an integral member of an agile team.Develop unit tests and assist in the T&V process to define test cases within an agile environment.

Join Us at LegoraAt Legora, we are revolutionizing the legal industry by collaborating closely with legal professionals to create innovative solutions. Our AI-driven workspace not only enhances the speed of legal tasks but also empowers users to ask insightful questions and unlock valuable insights. Each day, we strive to push the limits of legal technology, transforming intricate processes into streamlined, efficient workflows. Our trusted partnerships with top global firms like Cleary Gottlieb, Goodwin, Bird & Bird, and Linklaters across 40 countries reflect our commitment to excellence.Joining Legora means becoming part of a team that believes in excellence and collaboration. If you are passionate about building innovative solutions from the ground up in a fast-paced environment, we invite you to be a part of this exciting journey.The OpportunityAs a Senior Backend Engineer, you will play a crucial role in designing, developing, and delivering outstanding products that assist legal professionals worldwide in their daily operations. You will have the autonomy to work across the entire technology stack and take full ownership of your contributions.This position is based in our Stockholm headquarters and requires in-office attendance five days a week, as we believe that collaboration in person yields the best results.Your ResponsibilitiesDesign and implement new features for our web platform.Take charge of our codebase, ensuring high-quality code, security, and rapid development cycles.Utilize a range of technologies including Node.js, Postgres, Elasticsearch, AWS, Azure, and Kubernetes.Conduct code reviews and mentor junior engineers to foster team growth and improvement.Promote continuous improvement initiatives and challenge the status quo within the team.Are you ready to shape the future of legal technology with us?

Join Tietoevry, a leader in high-expertise product development, as an Android Framework Developer. In this role, you will collaborate with top-tier automotive and SmartTV clients, working on cutting-edge software and hardware solutions. You'll be immersed in the latest technologies, focusing on hypervisor-based solutions for modern vehicles. Your daily tasks will include bringing up new hardware for Android Automotive/Android TV, designing and developing customer features, integrating applications, participating in the Google certification process, and engaging with both internal and external stakeholders.

Join our dynamic team at Atlavik as a Mobile Developer! We are on the lookout for international talent to thrive in a challenging and fast-paced IT environment for our Swedish clients. In this role, you will:Design and develop SDKs and sophisticated applications for mobile platforms.Collaborate with cross-functional teams to define, design, and implement innovative features.Conduct unit testing for code robustness, covering edge cases, usability, and overall reliability.Address bugs and enhance application performance.Continuously explore, evaluate, and adopt new technologies to enhance development efficiency.Mentor and coach fellow mobile developers, contributing to their professional growth.

Join the dynamic team at TietoEVRY as an Integration Developer! In this role, you will play a vital part in designing, developing, and maintaining integration solutions that drive our banking technology forward. You will work in a collaborative environment, leveraging cutting-edge tools and methodologies to create seamless integrations for our clients.

Sopra Steria is hiring a Java System Developer for the Östersund office. This position centers on building and maintaining software applications as part of a collaborative team. Role overview This role involves working on a range of software projects using Java. The team values new ideas and a strong interest in technology. Expect to contribute to the development of reliable and effective solutions for clients. What you will do Develop and maintain Java-based software applications Work closely with colleagues to solve technical challenges Participate in projects that require creative and analytical thinking Requirements Experience with Java development Interest in technology and software solutions Ability to work well in a team setting

Join Evolution Gaming as a Senior Software Engineer and be part of a dynamic team that is revolutionizing the gaming industry. You will play a crucial role in designing and developing high-performance software solutions that enhance user experience and drive innovation.

Join our dynamic team at Sopra Steria as a System Developer specializing in .Net technologies in Östersund. We are looking for innovative thinkers who are passionate about creating software solutions that make a difference. You will collaborate closely with cross-functional teams to develop, maintain, and enhance applications that drive our business objectives.

Location: Stockholm HQ About Legora Legora builds an AI-powered platform designed for legal professionals. By working directly with lawyers, the team creates technology that fits real-world workflows and helps users analyze large volumes of documents quickly. Global firms such as Cleary Gottlieb, Goodwin, Bird & Bird, and Linklaters trust Legora’s solutions in over 40 countries. The company values rapid iteration and scalable products as key parts of its growth. Role Overview The Senior Software Engineer will help develop, review, and launch products used by legal experts worldwide. This role involves working across the full technology stack and offers plenty of ownership and autonomy. Projects range from building new features to optimizing existing systems, always with a focus on quality and impact. Main Responsibilities Design and implement end-to-end features for the web platform. Take responsibility for the codebase, maintaining high standards for code quality, security, and development speed. Work with technologies including React, Node.js, AWS, Azure, and Kubernetes. Review code and mentor junior developers, supporting their growth and team collaboration. Promote continuous improvement and challenge established ways of working both within the team and the wider industry. Who We’re Looking For Genuine interest in software engineering and a drive to innovate within legal technology.

Overview: We are on the lookout for a talented Platform Engineer to elevate and expand the developer experience at Lovable. This pivotal role involves managing essential components of our technology stack, ensuring that our engineering processes are efficient, effective, and distinctly more Lovable.Why Join Lovable?At Lovable, we empower anyone to create software using straightforward language. From individual entrepreneurs to Fortune 100 companies, millions utilize Lovable to convert raw concepts into tangible products swiftly. We are spearheading a revolutionary shift in software development, presenting you with an unmatched chance to redefine how the digital realm operates. With over 2 million users across more than 200 countries, Lovable is already making an impact, and we’re just beginning our journey.As a compact yet highly skilled team based in Stockholm, we are committed to building a company that will define the next generation. We cherish extreme ownership, rapid execution, and ego-free collaboration. We are eager to connect with individuals who are passionate, fast-paced, and ready to make a significant impact.Candidate ProfileProven programming expertise with a history of enhancing developer velocity and system reliability.7+ years of experience in a platform team focused on developer experience (observability, CI/CD, application frameworks, productivity tools, etc.).Experience writing code and developing tools to support scaling engineering organizations.Familiarity with Docker, Kubernetes, and contemporary infrastructure practices.A problem-solver who thrives on challenges and delivers high-impact systems quickly.Comfortable with ambiguity and adept at resolving issues as they arise.Strong awareness of security, stability, and performance, and skilled at making informed trade-offs.Must be located in Stockholm or willing to relocate, as this is an on-site position requiring presence five days a week.ResponsibilitiesIn brief: Take charge of and scale the developer experience at Lovable, positioning our engineering teams among the most efficient globally.Organize and structure our codebase.Integrate or create application frameworks to support the expanding engineering team and codebase.Lead the development of our observability stack, from code instrumentation to data presentation.

Join Us as a Senior Financial Systems Engineer!At Lovable, we’re on the lookout for a skilled engineer to lead the development and management of our financial systems infrastructure. This infrastructure is vital as it supports our payment flows, usage metering, monetization, and billing processes.Why Choose Lovable?Lovable empowers individuals and teams of all sizes to create software using any programming language. From aspiring entrepreneurs to major corporations, millions leverage Lovable to turn innovative ideas into successful products swiftly. We’re pioneering a transformative era in software development, providing you with an extraordinary chance to influence the digital landscape. With over 2 million users across more than 200 countries, Lovable is making waves in business automation and idea realization, and this is just the beginning.Our compact, highly talented team is dedicated to forging a company that defines a generation from our base in Stockholm. We emphasize extreme ownership, rapid execution, and collaborative humility, seeking individuals who are passionate, fast-paced, and eager to make a significant impact.Why This Role is Crucial?As we expand our global reach, it’s essential that our financial systems evolve in tandem. We are establishing a dedicated Financial Systems Engineering team to manage everything that links product usage to revenue, including subscription billing, credit-based usage models, service billing, and new monetization infrastructures as we grow.This senior position offers substantial influence. You won’t just maintain existing systems; you’ll be re-engineering and re-architecting while we still have the agility to do it right, shaping the architecture that will support our journey through scaling for years ahead.