Вакансії Fullstack Developer

The Martech team develops systems and tools to scale marketing efforts, like SEM/Paid Marketing. We focus on creating and optimizing the infrastructure behind scalable marketing campaigns, prioritizing efficiency and innovation over direct contributions to Preply’s product. From automating workflows to optimizing budget allocation, our work bridges technology and impactful results.
Joining Martech means being part of a dynamic, high-impact team that drives the marketing engine behind Preply’s global growth.
Our primary programming language is Python, but we take a tech-agnostic approach. This means we welcome candidates with diverse technology backgrounds, including Java/Spring, Node.js/Express.js, Ruby/Ruby on Rails, Scala/Play, PHP, or Golang.

What you’ll be doing:

• UI Development: Develop frontend features in React/Typescript, launched in our A/B experimentation framework.
• Implementation: Take on the responsibility of writing services from initial concept to full-fledged deployment.
• Collaborating with stakeholders: Work closely with marketing to understand their challenges and convert these into technical solutions.
• Raising the bar of our end-to-end solutions: Leverage previous experience to implement and socialize current best practices in frontend and backend.
• System Design: Design efficient system architectures that align with team goals, constraints and schedules.
• Prioritisation: Strike a balance between delivering fast results and maintaining high-quality, sustainable systems.
• Chasing Excellence: Embody a mindset of mastery by continuously seeking to improve your craft, delivering work of exceptional quality, and inspiring those around you to aim higher.

What you need to succeed:

• Full-Stack Expertise: This role is primarily backend-focused, with about 60% of the work on backend development and 40% on the frontend, requiring solid backend expertise and well-rounded full-stack engineering skills.
• Exposure to front-end tech: A good understanding of React, Typescript, HTML5, and CSS.
• Understanding Architectural Patterns: We operate on a large scale, requiring you to have experience in solving problems and building efficient services that can handle significant user traffic and data processing.
• Proactive Problem-Solving: You will be expected to face and solve challenges independently, both in the codebase and in our product initiatives.
• Communication Skills: Good at working with others and communicating effectively in English at a B2 level or higher.

We are seeking an experienced Lead JavaScript Developer to join our dynamic team. This role is crucial for the creation and enhancement of our gaming products.

Key Responsibilities:

• Develop and maintain game applications in JavaScript.
• Work with gaming frameworks such as PIXI.js, Phaser, etc.
• Implement cutting-edge user interfaces and UX solutions.
• Collaborate with developers, designers, and testers to optimize the development process.
• Implement and maintain server solutions using Node.js.
• Ensure high performance and optimization of code.

Required Skills and Qualifications:

• Deep knowledge of JavaScript and modern ECMAScript standards.
• Deep understanding of REST principles.
• Experience with gaming JavaScript frameworks like PIXI.js, Phaser, etc.
• Experience with Node.js development.
• Knowledge of game development principles and experience with game engines.
• Familiarity with version control systems, such as Git.
• Strong communication skills and the ability to work in a team.
• Experience in writing clean, modular, and well-documented code.
• Analytical mindset and a problem-solving approach.
• Obligatory knowledge of Ukrainian or Russian, at least on a conversational level.
• Knowledge of English is required.

We are growing and looking for motivated Middle/Senior Full Stack (.Net + React) developers who are ready for new challenges for Full-time or Part-Time cooperation.

About the project:

NetLS development team is working on the own product, No-Code/Low-Code ETL platform on the SaaS microservices architecture.

Duties:

• Develop accurate time-estimates for work assignments and communicate with engineering management and team leaders on task prioritization, scheduling, and coordination.
• Understand high level business requirements, produce technical specifications, designs and architectures, and propose solutions based on technical options, scope, and risk.
• Design, develop, and deliver applications to include architecture design, prototyping, development of production quality code, and design.
• Work with other team members and technical leads effectively and with minimal supervision.
• Provide continuous integration practices on the projects.
• Package and support deployment of releases.
• Setup integration with external software.

Required skills:

• At least 3 years of working experience with .NET (C#, ASP.NET\ASP.NET Core, Entity Framework\Entity Framework Core);
• At least 3 years of working experience with React (React 17 and higher would be a plus);
• Good knowledge of JavaScript (TypeScript would be a plus), HTML5, CSS 3, browser behavior, page life-cycle, and DOM events;
• At least 2 years of working experience with SQL (MS SQL Server and NoSQL would be a plus);
• English – Intermediate and higher.

Be a plus:

• Experience with CI/CD;
• Azure experience (Azure Web Service/Functions/WebJobs, Blob/File Share, Azure Table storage, Cosmos DB, Entra ID (formerly AAD), KeyVault, Application Gateway/Microsoft Defender for Cloud/Azure DDoS Protection, Azure Service Bus, Event Grid/Event Hubs, ElasticSearch), Microsoft Azure Certification;
• AWS experience (ECS/EC2/Lambda, Amazon S3, Amazon RDS/AWS Aurora, SRA, Amazon Detective, ElasticSearch), AWS certification
• Experience with migrating on-prem environments to the public cloud;
• Knowledge and experience with managing/operating Kubernetes.

We’re looking for a full-stack engineer driven to solve challenging problems with a clean and maintainable approach. You will write modular, high-quality code while actively contributing to peer code reviews. You will need to work in the eCommerce segment.

Responsibilities:

• Solve complex engineering problems.
• Work on a small to medium-sized Agile team.
• Work independently on tasks with the opportunity to get input from other engineers as needed.
• Collaborate with other engineers to evaluate and identify solutions to complex problems.
• Participate in peer reviews of pull requests and provide productive feedback to improve quality of work.

Requirements:

• Strong analytical and problem solving skills;
• Expert level fluency in at least 1 programming language;
• Experience working with, designing, and deploying production-grade React applications;
• Experience working with and helping Design Systems;
• Familiarity and experience with using GraphQL-based APIs;
• Strong end-to-end testing experience and an emphasis on TDD methodologies;
• Eager to learn about new technologies and implementing these ideas in a production environment;
• Languages and Frameworks: JavaScript, Node.JS, React (and React eco-system);
• APIs: GraphQL;
• Data: Postgres, MongoDB, Elasticsearch;
• Deployment: Docker, AWS, Kubernetes;
• Source Control: Git, GitHub.

About the Product:

Our client develops a solution that provides real-time monitoring and actionable health insights for better care. Its technology provides 24/7 monitoring of seniors’ health at home, offering emergency alerts, valuable insights, and predictive analytics to support proactive and efficient care.

About the Role:

We are seeking a Senior Full Stack Engineer to join a mission-driven product transforming lives with cutting-edge AI and IoT technology. This role offers the opportunity to work on innovative solutions that enhance safety and quality of life for end-users while providing actionable insights to businesses. In this role, you’ll contribute to both web and mobile platforms, taking ownership of features and building scalable solutions that directly impact users and businesses.

Key Responsibilities:

• Build and maintain reliable full-stack web applications using Node.js and React.
• Develop scalable microservices solutions.
• Work closely with product managers and designers to ensure technical solutions align with product objectives.
• Conduct code reviews to maintain high-quality standards throughout the development process.
• Identify and resolve complex technical issues to optimize system performance.
• Stay updated on industry trends and integrate new technologies to enhance our tech stack.

Required Competence and Skills:

• At least 4 years of experience as full-stack developer, equally focused on Node.js and React.
• Experience with microservices architecture and RESTful APIs for scalable solutions.
• Proficiency in Git for version control.
• Basic experience with AWS or other cloud platforms.
• Experience with the end-to-end development lifecycle.
• Strong communication skills and problem-solving mindset.
• Excellent English communication skills, both verbal and written.

Nice to have skills:

• Hands-on experience with React Native for iOS/Android app development, including familiarity with Expo – a big advantage.

Matoffo is looking for an experienced Full-Stack Developer (Python/React) to join our team. We welcome those who share our values, striving to grow professionally constantly and make things done.

About our client:

Client is a US based startup that organizes all info across your digital workspace and provides context for the projects, meetings, and people that matter to you. Product has all of your most important files, documents, conversations, and links organized by client, project, and team. It makes your daily activities much more comfortable.

What will you be doing:

• You will work with other team members to develop and support product functionality to achieve business goals;
• Maintain code and component library formulated using design patterns;
• Participate in code review, maintenance and refactoring, meeting new feature requirements and improving existing features;
• Participate in problem solving in a production environment;
• You will collaborate with other teams to understand the product vision and meet the requirements by developing the frontend functionality;
• Performing peer code-reviews and unit testing to ensure high-quality software.

We expect from you:

• 3+ years of experience with React, Redux;
• 3+ years of experience with HTML, CSS, and plain JavaScript;
• 3+ years of experience with Python;
• Experience with TypeScript is mandatory;
• Solid understanding of the SDLC and tooling (GIT, branching/merging, build systems, CI technologies);
• Understanding of state management (redux), HOCs, hooks;
• Experience working with remote data via REST and JSON;
• Strong knowledge of OOP, design patterns, SOLID;
• Experience with test driven development;
• Self-motivation with the ability to work in a team in a fast-paced environment;
• Ability to work independently, team player with strong communication and interpersonal skills;
• Ability to discuss and explain complex technical concepts to both engineers and non-engineers;
• Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon;
• An understanding of best practices and a commitment to following them;
• A positive mindset and can-do attitude;
• Experience working in an Agile environment;
• Upper-intermediate or higher English level, both spoken and written.

We are looking for a Senior Full Stack PHP Developer to join the team of a German-based product company, the biggest eHealth provider in the DACH market which specializes in developing innovative digital solutions that revolutionize hospital operations and improve healthcare efficiency.
By joining this team, you will get:

1. High-quality products – build long-term, reliable, scalable products, consistently updated to the latest versions, using best practices in coding, reviews, and testing.
2. Supportive and respectful collaboration – work with management that values professionalism, open communication, and mutual respect, fostering a healthy and friendly work environment.
3. Small, senior-level teams – be part of a small and fast-growing team of professionals from Europe where your contributions directly shape the product and are visible inside and outside the company
4. Growth opportunities and product ownership – introduce your ideas and take ownership of technical decisions in a dynamic, professional setting.

Your tasks:

• Develop top-notch, and maintainable software solutions, implementing modern engineering practices to ensure product quality.
• Engage in technical discussions to identify the best solutions and proactively offering innovative decisions.
• Collaborate effectively with both team members and management.

Your qualifications:

• 5 years of experience with PHP development (8.2 is used);
• 3 years of experience with Symfony 5 or higher (6.4 is used);
• Experience with Doctrine, MariaDB;
• Experience with Twig;
• Experience with REST API;
• Experience with Linux/Debian;
• Knowledge of JavaScript, jQuery (up to 15-20% of tasks);
• Good English language skills both written and spoken.

Nice to have:

• Experience with Playwright;
• Experience with Unit tests.

The software solution consists of different modules. The main purpose - the app controls the spray process on a field, gathering spray data, for example, routing, images, speed, and operator activity.

Responsibilities:

• Development of the Frontend part with React.js (Google Chrome extension);
• Gathering requirements and defining better approaches;
• Improvement of existing modules;
• Direct communication with the development team and customers;
• Participation in sprint planning and task evaluation.

Required skills and experience:

• Technical requirements documenting skills;
• 3+ years of experience working in C# including the latest versions of the ASP .NET Core or ASP Entity framework .NET 6, Web API;
• Experience with RESTful APIs;
• Familiar with MongoDB and PostgreSQL;
• Expirience in React.js (at least 2 years);
• Familiar with Azure DevOps;
• Fluency in Ukrainian;
• Upper-Intermediate or higher level of English.

Will be a plus:

• Previous experience in the Agriculture domain;
• Previous experience in IoT;
• Experience with CI/CD.

Now we’re expanding and welcome talented Senior Full-Stack (React.js + Python) Engineer to join our team.

Responsibilities:

• Be responsible for building new product features from the ground up: Shape. Design. Build. Think of features to improve team collaboration and focus;
• Create a product that will redefine time management: Because we are dealing with the most scarce resource on earth – time, we have the chance to create the most leveraged and useful software of the last (or next) decade. You can help us realize this goal;
• Tackle our most interesting and impactful problems: Our team is small, and people wear many hats. You’d jump between product, development, and process – participating in every phase from design to implementation. Absolutely no boredom;
• Join us at a magical time: We’ve been exploring our product-market fit, which means you’ll have a major impact. You’d join at the perfect time to shape what we build and how we grow;
• We’ve put the developer experience in the front and center to allow you to do your best work frictionlessly. We mastered and tailored state-of-the-art methodologies such as Github flow, full CI/CD, and dynamic preview environments early on.

Qualifications:

• You have 6+ years of full-stack development experience;
• You’ve built and maintained beautiful and scalable user interfaces that have reached a large audience using React;
• You have a track record of delivering scalable and reliable backend solutions and implementing REST API architecture. You are comfortable working with APIs and have a solid understanding of server-side languages and frameworks such as Node.js Python or Django;
• You can readily learn most technologies as you go. To you, technologies are about tools and tradeoffs, not an ideology;
• You care about the business implications of anything you build. You’re not just going after cool stuff – you understand the balance between craft, speed, and the bottom line;
• You are hungry to build products people love and are passionate about productivity and time;
• Bonus: You’re fluent with Typescript, Django, Postgres, Docker, K8S, and AWS.