Part-Time Back-End Developer

Abtrace is an innovative health technology company headquartered in London, with a growing presence in Portugal. Our diverse team of medical professionals, researchers, and developers collaborates to integrate cutting-edge software engineering with deep medical expertise. Together, we create clinical algorithms designed to empower primary care clinicians in …

Join our dynamic team at Devoteam as a Quality Analyst in the Investment Sector! We are looking for a detail-oriented professional who is passionate about ensuring the highest standards of quality in our investment-related projects. As a Quality Analyst, you will play a critical role in analyzing processes, identifying areas for improvement, and implementing effective quality assurance practices.

Natixis in Portugal seeks a Team Leader in IT Corporate Investment Banking for its Porto office. This position leads a team responsible for technology projects that underpin the bank’s corporate investment banking operations. Key responsibilities Guide and support IT professionals as they develop solutions for corporate investment banking needs. Oversee project delivery, making sure technology initiatives meet business objectives and align with investment strategies. Drive improvements in operational efficiency through hands-on team leadership and careful project management. Location The role is based on-site in Porto, Portugal.

Join our dynamic IT Risk development team, comprising seven talented developers, as we expand our existing IT PROX team from Paris to Porto. In this crucial role, you will collaborate closely with risk analysts and developers in both Paris and Porto to gather business specifications, implement solutions, document processes, and deploy your work effectively.Your responsibilities will include addressing the needs of our risk analysts, particularly those that cannot be managed by our legacy IT systems, all while adhering to tight deadlines and leveraging a diverse array of technologies.As a Senior .NET Developer, you will also provide support for IT PROX tools within the .NET framework, working in tandem with your colleagues to enhance our technological offerings.

Join our dynamic team as a Full-Stack Developer (specializing in .NET and Angular) within our Corporate & Investment Banking (CIB) division. This is a local contract position based in Porto, where you will play a crucial role in enhancing our banking solutions.Key Responsibilities:Design and implement innovative solutions using Angular, .NET 8, and SQL Server.Develop and maintain high-quality, reusable, and efficient code.Optimize applications for maximum performance, quality, and responsiveness.Diagnose and resolve bottlenecks and bugs, implementing effective solutions.Contribute to maintaining code quality and organization.Technical Skills Required:Proficiency in .NET (Core 3.1+, 8) and C# for backend development.Expertise in Angular 13+ for frontend development.Strong knowledge of relational databases.Familiarity with SOLID principles and Entity Framework/EF Core.Experience in Agile methodologies and a craftsmanship mindset.Desirable Skills:Experience with Design Patterns, particularly DDD and Event Sourcing.Familiarity with Checkmarx for security tracking.Comfortable with DevOps processes.Experience with non-relational databases (e.g., MongoDB).Knowledge of design patterns.Other Requirements:Fluent in both Portuguese and English (minimum B2 level).Self-motivated with a curious outlook, capable of working independently.A team player with excellent organizational skills.Eager to learn and adapt in a fast-paced environment.Strong problem-solving, analytical, and communication skills.Able to collaborate effectively in a multicultural setting.

We are seeking a highly experienced and talented Senior Full Stack Developer to join our dynamic team at Natixis in Portugal. The ideal candidate will possess a minimum of 5 years of professional experience in PHP development, showcasing a robust understanding of Laravel and WordPress frameworks. Proficiency in other relevant technologies is also essential.The successful candidate will be well-versed in Agile methodologies, with a strong background in API development and usage, Python scripting, and CI/CD processes. Knowledge of Linux and Shell scripting, along with experience using deployment tools such as XL Deploy and XL Release, is required. Fluency in English is mandatory, and proficiency in French will be considered a valuable asset.

Position OverviewJoin our innovative team at condukt as a Senior Backend Engineer, where you'll play a pivotal role in shaping the design and architecture of our core platform. Collaborating closely with the founding team, you will help us deliver exceptional value to our clients.As part of an early-stage startup, we take pride in our hands-on approach to building solutions from the ground up. You will have the opportunity to frequently ship code, iterate rapidly based on user feedback, and uphold the stringent security, performance, and uptime standards our clients expect.We are passionate about building, scaling, and growing. Our leadership team boasts a proven track record in product development, team scaling, and driving growth. Our talented engineers join us from top tech companies and unicorns.If you are enthusiastic about transforming complex challenges into simple, elegant solutions, this is the perfect role for you. You will have a significant opportunity to influence our engineering culture from the ground up.

At Mindera, we are on a mission to build exceptional software solutions and are actively seeking a talented Senior Backend Developer with expertise in Java or Kotlin. Join our dynamic and innovative team where collaboration and creativity are at the forefront. You will have the opportunity to tackle complex challenges while developing high-quality backend solutions in an Agile environment.Your role will involve taking ownership of the development process, from the initial requirements gathering to design, coding, testing, and deployment. You will leverage your skills in Kotlin or Java to create robust and scalable systems that push the boundaries of technology.We prioritize a culture of knowledge sharing and continuous learning, providing you with the chance to mentor junior developers and contribute significantly to our team's success. If you thrive in a fast-paced, cutting-edge environment and are passionate about technology, Mindera is the ideal place for you.

Join Devoteam as a Quality Assurance Engineer in our Didactic Sector, where you will play a pivotal role in ensuring the highest quality of our educational technologies. You will collaborate with cross-functional teams to develop test plans, execute tests, and troubleshoot issues. Your expertise will contribute to enhancing user experiences and delivering innovative solutions.

Join Devoteam Cyber Trust as a Cloud Security Engineer in the dynamic banking sector. In this critical role, you will design and implement robust security solutions, ensuring the integrity and confidentiality of sensitive financial data. Collaborate with cross-functional teams to assess risks, develop security policies, and respond to incidents effectively.

Toloka AI is seeking a freelance specialist with a strong background in biology and Python programming. This remote position is based in Porto, Portugal. Role overview This project centers on training AI models to better understand biological concepts using Python. The work involves applying subject matter expertise to improve how AI interprets and processes information in biology through code-based tasks. What you will do Use knowledge of biology and Python to guide AI model training Contribute to the development of educational resources powered by AI Location This freelance role is fully remote, with a focus on candidates located in Porto, Porto District, Portugal.

We invite you to submit your CV in English, along with your proficiency level in the English language.Mindrift serves as a bridge, connecting experts with AI project opportunities from leading technology firms, concentrating on the evaluation, testing, and enhancement of AI systems. Please note that participation is based on projects rather than permanent employment.Opportunity Overview:Each project is unique, and contributors may be tasked with:Creating original computational physics problems that replicate authentic physics research workflows;Designing problems that necessitate Python programming for resolution (utilizing libraries such as Numpy, SciPy, and Sympy);Ensuring that problems are computationally demanding, requiring extended timeframes (days/weeks) to solve manually;Generating problems that involve complex reasoning chains across mechanics, electromagnetism, thermodynamics, and quantum mechanics;Formulating problems based on real-world research challenges or practical applications in the field of physics;Verifying solutions through Python with established physics simulation libraries;Clearly documenting problem statements and supplying verified correct answers.Qualifications We Seek:This opportunity is ideal for physicists with Python experience, looking for part-time and non-permanent engagements. The ideal candidates will possess:A degree in Physics (Theoretical, Experimental, or Computational) or related disciplines;Proficiency in Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or other programming languages is also acceptable;A minimum of 2 years of professional experience, which may include applied, research, or teaching roles;Experience with numerical simulation techniques;The capability to design problems that reflect real physics research workflows;Innovative thinking in problem design across various physics domains;Knowledge of physics modeling and approximation methods;Strong written English skills (C1+).Process:Apply → Complete qualifications → Engage in a project → Execute tasks → Get compensated.Project Commitment:For this role, tasks are projected to require approximately 10-20 hours per week during active phases, contingent on project demands. Please remember that this is an estimate and not a guaranteed workload.Compensation:Participants can earn up to $29 per hour, based on contribution level and efficiency. Compensation varies across projects, influenced by their scope, complexity, and necessary expertise. Note that other projects on the platform may offer different compensation levels based on their specific requirements.

Join Devoteam Cyber Trust, a key player in the banking sector, as a Network Administrator. In this role, you will be responsible for managing and optimizing our network infrastructure to ensure seamless connectivity and robust security. Your expertise will play a crucial role in safeguarding sensitive data and supporting our team in delivering exceptional IT services.

Join our dynamic team at Devoteam Cyber Trust as a Network Security Engineer. In this role, you will leverage your expertise in network security to safeguard our banking sector clients. As a vital member of our Trust & Cybersecurity department, you will be responsible for implementing robust security measures, conducting risk assessments, and ensuring compliance with industry standards.This position requires fluency in French, enabling you to effectively communicate with our diverse clientele.

Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists in chemistry and Python with project-based AI work for technology firms. These freelance roles focus on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment. Role overview As a Chemistry & Python Specialist, contributors work on a variety of computational chemistry tasks. Projects may involve: Designing original computational chemistry problems that mirror real research workflows Developing Python solutions using libraries such as numpy, scipy, and chemistry-specific packages Creating problems that require computational approaches beyond manual calculation Formulating challenges in physical chemistry, quantum chemistry, or molecular modeling that demand advanced reasoning Basing problems on real-world research issues or practical chemistry applications Validating answers through Python and established computational chemistry methods Documenting both problem statements and verified solutions thoroughly Requirements Degree in Chemistry or a related field Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar libraries is also acceptable At least 2 years of relevant experience (applied work, research, or teaching) Experience with numerical methods in chemistry Strong knowledge of computational chemistry concepts and methods Excellent written English (C1 level or higher) Project process The engagement process includes applying, completing qualifications, joining a project, performing assigned tasks, and receiving compensation. Time commitment Active project phases typically require an estimated 10–20 hours per week, depending on project needs. Actual workload may vary. Compensation Contributors can earn up to $29 per hour, depending on expertise and speed. Compensation is project-specific and may vary based on scope and complexity. Other projects on the Mindrift platform may offer different pay rates.

This freelance, project-based role connects mathematics experts with Python skills to AI training initiatives for toloka-ai. Work is remote, based in Porto, Portugal, and assignments are not permanent positions. Role overview Projects involve designing and validating advanced computational mathematics problems that reflect real mathematical research and practical applications. Contributors may: Create original math problems that mirror authentic research workflows Develop problems requiring Python programming to solve, often using Numpy, SciPy, or Sympy Ensure problems are computationally intensive, beyond manual solution within days or weeks Design tasks involving reasoning in number theory, combinatorics, graph theory, and numerical analysis Base problems on real research challenges or practical mathematical scenarios Validate solutions in Python with established mathematical libraries Document problem statements and provide verified, correct answers Requirements Degree in Mathematics (Pure or Applied) or a related field Proficiency in Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, Stata, or similar tools is also acceptable At least 2 years of professional experience (applied, research, or teaching) Experience with numerical methods and symbolic computation Ability to design problems that reflect genuine mathematical research workflows Understanding of computational complexity theory Strong written English skills (C1 level or higher) How to participate Apply with a CV in English, including your English proficiency level Pass relevant qualification steps Join a project Complete assigned tasks Receive compensation Workload and compensation Project workload is estimated at 10–20 hours per week during active phases, depending on requirements. This is an estimate and not a guaranteed number of hours. Compensation can reach up to $29 per hour equivalent, based on contribution level and pace. Actual rates may vary by project scope, complexity, and expertise required. Other projects on the platform may offer different earning levels depending on their needs.

At Mindera, we are dedicated to assembling an exceptional team, and we invite you to be a part of it. We are in search of skilled Kotlin/Java Backend Developers who have a genuine enthusiasm for tackling intricate challenges. Within our Agile and collaborative setting, you will take charge of the technical components of development, creating high-quality software systems. Leveraging your proficiency in Kotlin or Java (if you are keen to work with Kotlin), you will design and implement resilient and scalable backend solutions. Your contributions will span the entire software development lifecycle, encompassing requirements gathering, design, coding, testing, and deployment. We prioritize collaboration, knowledge sharing, and continuous learning at Mindera. You will have the chance to collaborate with talented individuals, mentor junior developers, and play a crucial role in the team's growth and success. If you flourish in a fast-paced, innovative environment and have a passion for working with cutting-edge technologies, Mindera is the ideal place for you.

Role overview Toloka AI is looking for a Computer Science Specialist with advanced Python skills to contribute to AI projects. This position is remote and based in Porto, Porto District, Portugal, with regular collaboration alongside colleagues around the globe. Main responsibilities Design and develop AI solutions using Python Implement project requirements and deliver technical contributions Work closely with an international team to support Toloka AI’s goals Collaboration and location This is a fully remote role. Team members work from Porto or anywhere within the Porto District, connecting virtually with peers in various regions.

Please submit your CV in English and indicate your English proficiency level. This freelance, project-based role with Mindrift centers on developing and validating material science problems for AI training. Work is remote, with projects supporting leading technology companies. Assignments are not permanent and align with the needs of each project. Role overview Create original material engineering problems that mirror real-world scenarios and workflows Develop problems that require Python programming for engineering computations and simulations Design computationally intensive challenges using numerical methods or iterative solutions Focus on system design, optimization, and analysis tasks Draw inspiration from actual research issues or practical engineering cases Validate solutions with Python and standard engineering libraries Clearly document each problem statement and provide verified answers Requirements Degree in Material Science or a closely related discipline Strong Python skills for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, Stata, or similar tools is valued Minimum of 2 years of experience in applied, research, or teaching roles Solid understanding of practical engineering constraints and approximations Excellent written English (C1 level or higher) How projects work The process includes: Apply, pass qualifications, join a project, complete assigned tasks, and receive compensation. Time commitment Expect to dedicate around 10–20 hours per week during active project periods. The actual workload may shift based on project needs. Compensation Earn up to $29 per hour, depending on experience and pace. Rates may vary between projects based on complexity and required expertise. Other projects on the platform may offer different compensation according to their needs.

We invite you to submit your CV in English, including your level of English proficiency.Mindrift connects talented specialists with exciting, project-based AI assignments from leading technology companies, focusing on testing, evaluating, and enhancing AI systems. Note: Participation is project-based and not intended for permanent employment.What this role entails:Each project may present unique challenges, and contributors can expect to:Craft original material engineering problems that reflect authentic engineering workflows.Develop problems necessitating Python programming for engineering calculations and simulations.Design computationally intensive problems that require numerical methods or iterative solutions.Formulate challenges involving system design, optimization, and analytical processes.Base problems on real-world research challenges or applicable engineering practices.Validate solutions using Python with standard engineering libraries.Clearly document problem statements and provide verified correct answers.Qualifications we seek:This opportunity is ideal for material scientists and engineers with Python expertise, looking for part-time, non-permanent project engagements. Preferred qualifications include:A degree in Material Science or a related field.Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or domain-specific libraries is also acceptable.At least 2 years of professional experience in applied research, teaching, or related fields.A solid understanding of practical engineering constraints and approximations.Strong command of written English (C1+ level).How it operates:Apply → Pass qualifications → Engage in a project → Complete tasks → Receive payment.Project Time Expectations:Tasks are estimated to require approximately 10–20 hours per week during active project phases, depending on project needs. This is an estimate and not a guaranteed workload.Compensation:Contributors can earn up to $29 per hour, based on their expertise and contribution pace. Compensation will vary by project, depending on scope, complexity, and required skills. Other projects on the platform may offer different compensation levels based on their specific requirements.