Job Type : 💻 Web Development and UI/UX

Internship Job Sectors:

Internship by Country

theInterna - Logo Small Square Reversed

theInterna

theInterna is a platform designed to connect ambitious interns with startups, offering placement years, Erasmus opportunities, and long-term internships. theInterna shares essential tips and insights to help both interns and startups succeed.

Are you looking for an internship?

Is your business looking for interns?

AI Agent Engineer Intern in a Startup which is Disrupting the Survey and Market Research Industry

🧠 About the Startup

This early-stage startup is on a mission to reinvent how market surveys are run, analyzed, and turned into insights. They’re building an AI-first platform that automates survey creation, analysis, and action mapping — delivering speed, clarity, and cost-efficiency for fast-moving teams.

Currently at the concept-to-prototype phase, the team is looking for an ambitious intern who wants to help shape a product from the ground up, with real technical ownership and creative input.

🛠 What You’ll Work On

As an AI Agent Engineer Intern, you’ll support the founder in developing and refining autonomous workflows (agents) using LLMs like GPT-4 and Claude. Your work will be critical in shaping how survey data is turned into meaningful insight — fast.

You might:

  • Prototype and test prompt chains for survey design and synthesis
  • Build simple backend flows to simulate agent behavior
  • Use tools like LangChain, OpenAI API, Pinecone, or Zapier/Make for MVP components
  • Research existing survey tools and AI use cases to guide product design
  • Work with the founder to test and iterate based on user feedback

🧰 You Might Be a Good Fit If You:

  • Are fascinated by AI agents, GPT tooling, and automation workflows
  • Have basic experience with Python or JavaScript (or strong willingness to learn)
  • Love solving open-ended problems and hacking together MVPs
  • Are curious about product thinking, user flows, and startup experimentation
  • Want to work closely with a founder and see your ideas directly impact the product

What You’ll Gain

  • Exposure to early-stage product development
  • Hands-on experience working with AI tools & agent workflows
  • Mentorship from a founder building in the AI x research space
  • The opportunity to help launch something from 0→1
  • Paid <> to be discussed during the interview

QA Tester and Automated Testing Intern at an GenZ career platform startup

Role Overview

We are looking for QA Testing & Automated Testing Interns to help ensure the quality and reliability of our platform. In this role, you will assist in writing and executing tests, documenting deployment steps, and troubleshooting minor issues to support the development team. This is a great opportunity to gain hands-on experience in software testing while working in an innovative tech environment.

Key Responsibilities

  • Assist in QA testing and bug reproduction to improve platform stability.

  • Write end-to-end tests and automated tests for the platform.

  • Document deployment steps and maintain developer guides.

  • Monitor logs and troubleshoot minor issues.

  • Support testing and deployment processes.

Qualifications

  • Interest in learning how to write code in React and TypeScript.

  • Basic understanding of software testing methodologies.

  • Strong attention to detail and problem-solving skills.

  • Ability to work collaboratively in a remote team environment.

Benefits

  • Gain hands-on experience in a fast-paced tech startup.

  • Learn and grow in software development and testing.

  • Work with a dynamic and innovative team focused on revolutionizing the future of work.

If you’re eager to gain real-world experience in software testing and automation, apply now and be part of a team building the future of career mentorship!

– Remote role
– Remuneration: paid but to be discussed during interview (also depends on experience and hours)

Software Development Intern

Company Overview

A leader in advanced optical metrology, leveraging wavefront phase imaging (WFPI) to revolutionize semiconductor manufacturing. Originally rooted in adaptive optics research for astronomy, the technology enables nanoscale precision in wafer metrology. Backed by global investors like Samsung Ventures, Intel Capital, and the European Innovation Council Fund, Wooptix is at the forefront of innovation in computational optics, robotics, and high-precision measurement systems. Developing 3d construction projects, medical devices

About the Role

As a Software Development Intern, you will work alongside a team of engineers, physicists, and developers to design and implement software solutions for high-precision optical metrology. This role is perfect for those passionate about computational modeling, algorithm development, and applied physics in high-tech industries.

Key Responsibilities

  • Develop and optimize algorithms for wavefront sensing, robotics, and computational optics.

  • Work on software solutions for real-time image processing and phase imaging techniques.

  • Assist in designing automation tools for semiconductor metrology systems.

  • Collaborate with physicists and engineers to translate research concepts into functional software applications.

  • Contribute to the development of AI/ML models for pattern recognition and defect detection in semiconductor manufacturing.

  • Test and validate software performance in experimental and real-world scenarios.

Ideal Profile

  • Background in computer science, software engineering, physics, applied mathematics, or a related field.

  • Strong programming skills and a passion to learn.

  • Interest in improving knowledge in optics, robotics, thermography, and scientific computing.

  • Passion for innovation and solving complex technical challenges.

  • Ability to work independently and in a collaborative, fast-paced environment.

Internship Details

  • Duration: 6 months

  • Location: Tenerife – could be done remotely or hybrid 

  • Compensation: Paid internship, details to be discussed during the interview process.

Why Apply?

This is an exceptional opportunity to gain real-world experience in cutting-edge optical technology, computational physics, and robotics. If you’re excited about working on groundbreaking innovations that blend software engineering with advanced scientific research, this internship will provide a strong foundation for your future career.

Full Stack Developer (Remote) in a Second-Hand Bike Marketplace Startup

About the Company

This organization is committed to promoting sustainable urban mobility by providing an innovative and eco-friendly transportation solution. Through technology-driven solutions, it aims to enhance accessibility and encourage environmentally friendly travel options.

About the Role

As a Full Stack Developer, you will play a key role in developing, optimizing, and maintaining web applications, working on both front-end and back-end systems. You will collaborate with the team to improve the platform’s functionality, performance, and user experience.

Responsibilities

  • Develop and maintain front-end and back-end components of web applications using ReactJS and ExpressJS.
  • Deploy and manage applications on Linux servers using Bash scripts.
  • Containerize applications with Docker for efficient deployment and scalability.
  • Utilize AWS services such as EC2, S3, and Lambda for cloud-based infrastructure.
  • Manage relational databases using Postgres, ensuring data integrity and performance.
  • Collaborate with team members to implement best practices and optimize the codebase.
  • Contribute to version control and development workflows using GitHub.

Qualifications

  • Strong understanding of ExpressJS and RESTful API development.
  • Experience with Linux operating systems and shell scripting using Bash.
  • Familiarity with Docker containerization and deployment strategies.
  • Knowledge of AWS services for cloud infrastructure management.
  • Competence in working with relational databases, preferably Postgres.
  • Proficient in Git version control and collaborative development using GitHub.

Benefits

  • Competitive salary and benefits package.
  • Opportunities for professional growth and development.
  • Flexible working hours and remote work options.

If you’re excited about building scalable applications and contributing to an impactful project, apply now and join our development team!

Start Date: Immediate

Salary: £500 / mo

Software Development Intern

Software Development Intern

Are you looking to gain hands-on experience in software development while contributing to the future of renewable energy? This internship offers an exciting opportunity to develop and optimize software solutions for solar energy applications. Ideal for tech-savvy individuals passionate about coding, innovation, and sustainable energy.

About the Role

As a Software Development Intern, you will support our engineering team in designing, building, and testing software applications that enhance solar energy efficiency. You’ll gain exposure to real-world coding projects, contribute to the development of tools for energy management, and work on innovative solutions that drive the transition to clean energy.

Key Responsibilities

  • Assist in the development and testing of software applications for solar energy systems.

  • Support the engineering team in coding, debugging, and optimizing software solutions.

  • Contribute to the creation of internal tools, databases, and automation scripts.

  • Research and implement emerging technologies to enhance solar energy software solutions.

  • Maintain technical documentation and assist with reporting on software performance.

Ideal Profile

  • Native Spanish

  • Currently pursuing or recently completed a degree in Computer Science, Software Engineering, or a related field.

  • Proficiency in Python, HTML, the Django framework ideally.

  • Familiarity with databases, cloud computing, and web development is a plus.

  • Strong problem-solving skills and an ability to work both independently and in a team.

  • Interest in renewable energy technologies and their software applications.

  • Excellent communication and organizational skills.

Internship Details

  • Duration: 6 months

  • Location: Madrid

  • Compensation: €400 per month stipend

This internship is a great opportunity to develop software skills while working on impactful renewable energy projects. If you’re eager to apply your technical expertise to real-world sustainability challenges, we’d love to hear from you!

Engineering Support Intern

Engineering Support Intern

Are you looking to gain valuable experience in engineering administration? This internship offers an exciting opportunity to assist with administrative tasks, document management, and coordination to support engineering teams. Ideal for detail-oriented individuals who want to learn and contribute in a fast-paced, innovative environment.

About the Role

This internship is perfect for someone interested in combining engineering and administrative skills. You will assist engineering teams by managing documents, tracking project timelines, and supporting day-to-day operational needs. As an Engineering Support Intern, you’ll work closely with engineers and project managers to ensure smooth project execution.

Key Responsibilities

  • Assist with organizing and maintaining engineering documents, reports, and project files.

  • Support project coordination by tracking deadlines, deliverables, and ensuring necessary materials are prepared.

  • Update and maintain internal databases related to engineering projects and resources.

  • Coordinate meetings, prepare agendas, and take meeting minutes for engineering-related discussions.

  • Provide administrative assistance to the engineering team, ensuring effective communication and smooth operations.

  • Help prepare technical presentations, reports, and proposals.

  • Assist in ensuring compliance with documentation and internal processes.

Ideal Profile

  • Strong organizational skills, with a focus on accuracy and attention to detail.

  • Excellent written and verbal communication skills, with the ability to convey technical information clearly.

  • Proficient in MS Office (Excel, Word, PowerPoint) and familiarity with project management tools is a plus.

  • Ability to multitask and manage priorities in a dynamic work environment.

  • Proactive, self-motivated, and a quick learner, with the ability to work independently and within a team.

Internship Details

  • Duration: 6 months

  • Location: Madrid

  • Compensation: negotiable 

This internship offers an excellent chance to gain practical experience while supporting engineering teams and projects. If you’re organized, eager to learn, and ready to contribute to an exciting team, we’d love to hear from you!

Software Engineering Intern

Company Overview

Otitest is an innovative medical technology company specializing in clinical evaluation and regulatory advancements for cutting-edge medical software. Based in Porto, Otitest is focused on improving connectivity between medical software systems while expanding its reach into the U.S. market. With a small yet highly skilled team of engineers and support from a diverse advisory board, Otitest is dedicated to transforming the future of healthcare through technology. As the company grows, we are offering exciting internship opportunities for driven individuals passionate about software development, engineering, and digital marketing.

Software Engineering Intern 

Key Responsibilities:

  • Collaborate with the CTO to design, develop, and implement software solutions, focusing on Python and React.
  • Work on integrating connectivity features with other medical software systems to ensure seamless interoperability.
  • Assist in refining the architecture and developing tools that meet regulatory standards.
  • Support the evaluation and testing of clinical software applications to ensure compliance and functionality.
  • Contribute to building a robust, scalable codebase while troubleshooting and resolving technical issues.

Ideal Profile:

  • Background in Software Engineering, Computer Science, or a related field.
  • Proficiency or interest in learning React and Python.
  • Strong problem-solving skills and ability to work in a fast-paced environment.
  • Interest in health tech or experience with medical software is a plus.

Location:

  • Open to remote or hybrid; based in Porto preferred.

Salary:

  • Paid role, with compensation discussed during the interview.

These internships offer the chance to work in a startup environment alongside industry experts, gain hands-on experience in a rapidly evolving field, and make a meaningful impact on healthcare innovation. Join OtiTest and help shape the future of connected medical software!

Software Developer Intern

Company Overview

A fast-growing, talented, and ambitious team developing innovative AI-driven software designed to revolutionize how companies conduct research, analysis, and creative processes. Their goal is to transform the industry by leveraging AI technology to streamline workflows, enhance decision-making, and offer smarter, more efficient solutions. The company has a collaborative and forward-thinking environment, perfect for interns eager to gain hands-on experience in AI, software development, and marketing

About the Role

This is an exciting opportunity for a driven intern to gain hands-on experience in AI software development. You’ll work closely with the engineering team to research, develop, and optimize AI-driven features that enhance the company’s software solutions. This role offers the chance to dive into AI algorithms, data processing, and system optimization while contributing to impactful projects.

You’ll gain valuable exposure to modern AI-driven software development. If you’re passionate about artificial intelligence, problem-solving, and building innovative solutions, this role is for you!

Key Responsibilities

  • Assist in the research, design, and development of AI-driven software solutions.

  • Implement and optimize machine learning models and data processing algorithms.

  • Support the development of backend systems, ensuring efficiency and scalability.

  • Debug and improve existing software by analyzing performance and troubleshooting issues.

  • Work collaboratively with the product and engineering teams to refine AI-driven functionalities.

Ideal Profile

  • Currently pursuing a degree in Computer Science, Software Engineering, AI, or a related field.

  • Passion for artificial intelligence, machine learning, and automation.

  • Knowledge of basic programming skills in Python or Java.

  • Strong analytical and problem-solving abilities.

  • Ability to work independently and contribute effectively in a team setting.

Internship Details

  • Duration: 6 months 

  • Location: Valencia, Spain 

Compensation: Paid (to be discussed during the interview process).