Вакансии Node.js Developer

On behalf of our Client, a well-established financial institution from the Caribbean region Mobilunity is looking for a Back-End Engineer (.NET /Node.js) for a long-term engagement.
Our Client is the largest bank in the Caribbean region that serves 14 countries/territories. The aim is to make this organization from a traditional bank into a new era of fintech, working on the edge of what current fintech may offer.
The Back-End Engineer will be pivotal in developing and optimizing server-side logic for our digital banking platforms, with specialized focus on Anti-Money Laundering (AML) compliance systems. The role involves ensuring the responsiveness and scalability of our applications, enhancing user experience, and maintaining data integrity while supporting financial crime prevention initiatives. Working closely with compliance engineers, front-end developers, and cross-functional teams, the Backend Developer will implement server-side solutions, integrate with regulatory systems, and handle secure data storage solutions for AML workflows.

Key Responsibilities:

• Development and Maintenance:
  • Develop and maintain scalable and efficient backend services for core banking and AML compliance systems.
  • Write clean, maintainable, and efficient code, adhering to best practices and coding standards.
  • Design and implement business logic for AML transaction monitoring, customer screening, Risk rating, Deferral and regulatory reporting systems.
• API Development and Integration:
  • Develop and maintain RESTful APIs for integration with front-end services, external regulatory databases, and third-party compliance tools.
  • Integrate with sanctions databases (OFAC, EU, UN), PEP lists, and regulatory reporting systems.
  • Ensure secure API endpoints for sensitive financial and customer data handling in compliance with AML regulations.
  • Integrate third-party services and maintain data integrity across multiple systems.
• Database Management and Security:
  • Design and optimize database schemas for high-volume transaction processing and compliance data storage.
  • Implement robust data protection measures for AML case management, audit trails, and regulatory reporting data.
  • Ensure data integrity and consistency across AML systems, maintaining proper audit logs for regulatory compliance.
  • Write and execute efficient database queries for real-time transaction monitoring and historical data analysis.
• Testing and Optimization:
  • Implement unit, integration, and performance tests to ensure robustness and reliability of backend services.
  • Develop specialized tests for AML rule engines, transaction scoring algorithms, and compliance workflows.
  • Optimize applications for maximum speed, scalability, and data security.
  • Performance tune systems to handle high-volume transaction processing and real-time monitoring requirements.
• Security and Compliance Implementation:
  • Implement security measures specific to financial services and AML compliance requirements.
  • Ensure proper handling of sensitive customer data and transaction information in accordance with regulatory standards.
  • Develop and maintain secure interfaces for regulatory reporting and audit trail generation.
• Collaboration and Documentation:
  • Work closely with front-end developers, product owners, and other stakeholders.
  • Collaborate with compliance teams to understand AML requirements and translate them into technical solutions.
  • Maintain comprehensive documentation of developed features, APIs, and backend architecture.
  • Document AML system integrations and compliance-related technical specifications.
• Continuous Learning and Improvement:
  • Keep abreast of the latest industry trends, technologies, and best practices in backend development.
  • Stay updated on evolving AML regulations and financial crime prevention technologies.
  • Suggest and implement new technologies and tools to enhance application quality and user experience.

Requirements:

• At least 5 years of proven experience as a Backend Developer with a strong portfolio of developed applications.
• Proficiency in server-side languages (Node.js, C#, .NET) and corresponding frameworks.
• Deep knowledge of programming and engineering principles (SOLID, clean architecture, event sourcing).
• Strong knowledge of SQL and NoSQL database technologies (MSSQL, MySQL, Oracle, MongoDB, Couchbase).
• Significant experience in developing and consuming RESTful APIs and web services for large-scale applications.
• Experience with version control systems, particularly Git, and collaborative platforms (GitHub, Jira, Microsoft Teams).
• Strong knowledge of web server technologies (Apache, Nginx, IIS) and security best practices.
• Excellent problem-solving skills, communication skills, and attention to detail.
• Upper-intermediate level of English.

Nice to have:

• Proficiency in server-side languages (Python, Java).
• Previous experience in financial services, fintech, or AML compliance systems.
• Knowledge of financial crime prevention, transaction monitoring, or regulatory reporting systems.
• Experience with containerization (Docker, Kubernetes) and cloud services (AWS, Azure, Google Cloud).
• Familiarity with microservices architecture and event-driven systems.
• Experience with CI/CD practices and DevOps methodologies.
• Knowledge of Agile and Scrum development methodologies.
• Understanding of financial regulations and compliance requirements (BSA/AML, OFAC, etc.).
• Experience with immutable infrastructure and infrastructure automation tools.

IT Craft invites a Full-Stack (Node.js/React) Developer to join the company.

Responsibilities:

• Own the full lifecycle of features, from technical design through production rollout and monitoring;
• Participate in designing and implementing back-end services in Node.js (Nest.js or Express) that are secure, observable, and horizontally scalable;
• Build modern, accessible, and performant React (≥17) interfaces using hooks and component composition best practices;
• Perform solid code reviews, enforce engineering standards, and proactively refactor legacy code;
• Profile, benchmark, and optimise application performance (both client and server);
• Collaborate closely with product, design, and DevOps to deliver incremental value on a tight release cadence.

Requirements:

• 4+ years of experience in Full-Stack development using Node.js (Nest.js or Express) and React.js;
• Excellent English communication skills (Upper-Intermediate/B2 level or higher);
• Hands-on experience with React.js, including Redux and Redux Toolkit;
• Expertise with both SQL and NoSQL databases (e.g., MongoDB);
• Experience in designing RESTful services and APIs;
• Experience with WebSockets and RabbitMQ for real-time and event-driven communication;
• Strong knowledge of microservices architecture and event-driven patterns;
• Practical experience with Docker and Kubernetes for containerization and orchestration;
• Experience with automated testing to ensure robust and reliable code.

Will be a plus:

• Experience in integrating payment processors (PayPal, Stripe, etc.);
• Familiarity with cloud platforms such as GCP, AWS, Azure or DigitalOcean.

We are seeking a Senior Mobile Engineer with strong expertise in React Native for cross-platform mobile app development and solid backend development experience using Node.js. You will play a key role in designing, building, and maintaining scalable mobile applications and backend services, while collaborating closely with product managers, designers, and other engineers.
Project is a development of a new hybrid mobile application (iOS + Android) designed specifically to support family caregivers of those with Alzheimer’s disease.

What you will do

• Lead the development of high-quality, scalable, and performant mobile applications using React Native.
• Design and implement robust backend services and APIs with Node.js.
• Optimize app performance across Android and iOS platforms.
• Participate in architectural decisions and code reviews, enforcing best practices in mobile and backend development.
• Mentor junior engineers and contribute to a culture of continuous improvement.
• Collaborate cross-functionally with UI/UX designers, QA, and product managers to deliver a seamless user experience.
• Ensure application security, stability, and scalability through effective engineering practices.
• Implement CI/CD pipelines and maintain automated testing frameworks.

What you need for this

• 5+ years of software development experience, with at least 3+ years in mobile development using React Native.
• 3+ years of experience building backend services with Node.js.
• Proficiency with JavaScript and TypeScript.
• Deep understanding of mobile app architecture, navigation patterns, and performance optimization.
• Familiarity with RESTful APIs, GraphQL, and third-party API integrations.
• Experience with mobile debugging, logging, and analytics tools (e.g., Flipper, Firebase, Sentry).
• Experience with cloud services such as AWS, Google Cloud, or Azure.
• Knowledge of CI/CD tools and mobile app deployment (App Store, Google Play).
• Strong understanding of version control (Git) and Agile methodologies.
• Excellent problem-solving and communication skills.

Nice to Have

• Experience with state management tools like Redux, Zustand, or Recoil.
• Knowledge of native development (Swift, Objective-C, Kotlin, or Java).
• Experience with Docker and containerized backend services.

Місія нашого партнера – прискорити впровадження відновлюваної енергії по всій Європі шляхом поєднання технологій, інновацій та глибокої експертизи в енергетичному секторі. Мета – забезпечити більш ефективний, прозорий і масштабований енергетичний перехід.
Для досягнення цього необхідно створити інтелектуальні платформи, що об'єднують ключових учасників енергетичної екосистеми – сприяючи співпраці та забезпечуючи потужну технічну, комерційну й фінансову синергію на шляху до сталого розвитку.

Твоя команда

Ти станеш цінним членом нашої команди розробників, приєднавшись до групи інноваційних і захоплених своєю справою професіоналів, які займаються створенням важливих бізнес-інструментів. Проєкт наразі знаходиться на етапі Discovery, тож ти матимеш унікальну можливість долучитися до його розробки з самого початку, працюючи пліч-о-пліч із талановитими Project Manager, Front-end and Back-end Engineers, QA Engineer, DevOps Engineer.

Твої обов’язки

• Менеджмент команди з інженерії та встановлення найкращих практик для розробки програмного забезпечення.
• Проєктування, розробка та підтримка застосунку, забезпечуючи високу продуктивність і швидкість відгуку.
• Впровадження масштабованих backend API та інтеграція їх із frontend компонентами для створення безперебійної роботи користувача.
• Оптимізація бази даних та забезпечення масштабованості, продуктивності для безпечної та ефективної обробки даних.
• Розробка та підтримка стратегії розгортання у хмарі, використання інструментів для автоматизації та моніторингу.
• Усунення технічних проблем та вирішення викликів для стабільності й безпеки застосунку.
• Участь в Agile спринтах, проведення код-рев'ю та надання технічної інформації для ітеративної розробки.

Це про тебе

• Маєш 6+ років досвіду в розробці програмного забезпечення.
• Маєш 2+ років досвіду в управлінні командою.
• Маєш досвід розробки застосунків використовуючи React.js та Node.js.
• Володієш системами контролю версій (Git) і методологіями Agile.
• Володієш знаннями реляційних баз даних, зокрема PostgreSQL.
• Маєш досвід роботи з хмарними сервісами, такими як AWS, включаючи розгортання та CI/CD конвеєри.
• Знайомий з API, інтеграцією сторонніх сервісів і рольовим контролем доступу (RBAC).
• Маєш сильні навички розв'язання проблем і досвід роботи в міжфункціональних командах.
• Розумієш найкращі практики безпеки, включаючи протоколи автентифікації, такі як OAuth і JWT.
• Вільно володієш англійською мовою на рівні Upper-Intermediate або вище.

We’re opening the position of a Senior Software Developer to work with our Client – a leading energy SaaS company delivering highly technical insights and predictive/prescriptive analytics that empower customers to make decisions that increase profit.
​You would be joining the Front-End Chapter of the team developing our premier energy analytics platform.

Responsibilities:

• Rapidly prototype new features in a React-based web application
• Influence design and user experience of single-page applications
• Perform full-stack development and maintenance of our platform services built with Node.js, React, and Kubernetes
• Create and maintain microservices backed by document-based databases and GPU accelerated databases
• Contribute to scoping, estimating, and planning projects
• Debug, investigate, and resolve bugs and customer issues
• Write unit, integration, and end-to-end tests
• Lead code reviews, API design reviews, or technical reviews of the products
• Stay up to date on industry trends through self-study, research, and online courses
• Mentor junior team members

Requirements:

• 5+ years of software development experience building web applications with React and Node.js
• Extensive experience with modern web application development tools and libraries
• Multiple years of experience writing modern applications in JavaScript (ES2015 and later)
• Knowledge and experience with one JavaScript-based bundler (we use webpack)
• Solid understanding of proper use and design of a microservices architecture
• Understanding of the fundamental design principles behind building secure and scalable applications
• Experience working within a continuous integration and deployment (CI/CD) environment
• Familiarity with OOP and Agile methodologies
• Ability to manage source code effectively using Git (we use GitHub)
• Excellent understanding of data structure and algorithms
• Excellent communication and cross-functional collaboration skills
• English level – Upper-Intermediate or higher

Will be a plus:

• Hands-on experience with Jest and/or React Testing Library
• Experience in data visualization, using Mapbox, D3, or other JavaScript-based libraries
• Familiarity with Docker and Kubernetes
• Familiarity with MongoDB and PostgreSQL
• Familiarity with Git (or an equivalent)
• Familiarity with Azure Cloud services (or an equivalent)
• Understanding of CI/CD
• Experience working in a Nix-like environment (Linux, OSX, Windows WSL2)

We're looking for a talented Backend Developer to join our amazing R&D growing team.
Our engineering team is responsible for building complex, high-scale and real-time systems. We are looking for a strong developer with some practical experience, and the drive and enthusiasm to succeed in a demanding and professional team environment

Responsibilities

• You will own features end-to-end, from research and design through rollout and monitoring in a high-scale production environment
• You will contribute to architectural decisions on core components
• You will collaborate within a cross-functional team that includes product, client, and QA
• You will deliver high quality and well-structured code

Requirements

• At least 3 years of backend development experience
• BSc in computer science or equivalent
• Experience with distributed systems and micro services architecture
• Experience in high scale systems
• Self-learner, strong can-do attitude and great interpersonal skills

Advantage:

• High proficiency in Node.JS and TypeScript
• Familiarity with AWS cloud services / infrastructure
• Familiarity with Redis
• Kafka experience
• Experience with NoSQL / SQL Databases
• Passionate about AI tools and familiarity with Cursor / Co-Pilot

We’re hiring for an awesome Israel-based gaming company that people on Glassdoor say has “fun startup vibes.” They’re all about building exciting real-money games that players love, using smart game design, cool features, and partnerships with top gaming brands. Right now, they are developing two new games and hosting live tournaments for mobile.
If you want to work on creative projects in a fun and fast-moving environment, this could be your next big move! Ready to join the team?

What makes you a great fit

• 5+ years of software development experience.
• Gaming/gambling industry experience is a must.
• Deep experience building and maintaining scalable microservices and APIs.
• Strong knowledge of Node.js and TypeScript in production environments.
• Hands-on experience with React and Next.js in production environments.
• Experience working with distributed systems, message queues (Kafka), and real-time data.
• Solid understanding of database design, optimization, and data flows.
• Familiarity with cloud-native development and infrastructure tools (Docker, Kubernetes).
• Strong collaboration, communication skills.
• Level of spoken English: at least an upper-intermediate.

The ideal candidate will have expertise in the following technologies:

• Languages/Frameworks: TypeScript, React, Next.js, Node.js, NestJS
• Databases: PostgreSQL, Redis, ClickHouse
• Messaging: Kafka
• Protocols: REST, Socket.io
• Data & Analytics: Jitsu, ETL, Google Analytics, Mixpanel, Grafana
• Infrastructure: Kubernetes, Redis, Cloudflare
• Communication: Twilio
• Containerization: Docker
• Security: JWT, Auth0
• Monitoring & Logging: Grafana, custom ETL, Mixpanel
• Design & Collaboration: Miro, Figma
• Development Tools: GitHub, Slack, Confluence, Jira, CI/CD pipelines

Your day-to-day in this position

• Design, implement, and maintain scalable backend systems and user-facing features for our games and platform (Node.js + React/Next.js).
• Collaborate closely with front-end developers, data engineers, and product managers.
• Drive the adoption of best practices in API design, microservices, testing, and security.
• Participate in code reviews and contribute to continuous technical improvement.
• Work cross-functionally with QA, analytics, DevOps, and game development teams.

Fintech project

Requirements

• 5 + years of relevant experience in the IT industry, strong knowledge of including ECMAScript;
• 4 + years of experience with Node. on top of NestJS;
• Experience with AWS;
• Experience with Aurora RDS;
• Experience with Serverless;
• Experience with NoSQL, PostgreSQL;
• Experience with Cognito;
• Experience with CI automation and test cases;
• English: Upper-intermediate.

Would be a plus

• Experience with Plaid integration;
• Experience with Google Cloud architecture.

We’re looking for a Senior Backend Engineer to join our Reporting Team. This role involves designing and building scalable API solutions, mentoring junior team members, and contributing to impactful projects in a collaborative, distributed team environment. This position reports to the Team/Tech Lead.

In this role, you’ll get to:

• Design and implement robust REST and GraphQL APIs for scalable and efficient integrations.
• Work with ORMs to manage complex database interactions effectively.
• Utilize AWS services such as Lambda to build and maintain cloud applications.
• Write and maintain comprehensive automated tests to ensure code quality.
• Partner with product teams, asking the right questions and providing well-thought-out design solutions
• Conduct code reviews to uphold high development standards.
• Mentor junior engineers, fostering technical growth and a culture of continuous learning.
• Participate in design reviews and contribute to key architectural decisions.

Who you are and what you’ll need for this position:

• 5+ years of experience in Backend development with proficiency in Node.js, Python, REST, and GraphQL API design.
• Skilled in working with AWS services like Lambda for cloud-native development.
• Skilled in SQL databases and adept at using ORMs to simplify database operations.
• Good knowledge of best backend architecture practices
• Deep knowledge of how our used technology stack works and interoperates
• Experienced in writing automated tests to maintain robust and reliable code.
• Strong debugging, troubleshooting, and problem-solving skills with attention to detail.
• Quick to learn and adopt new technologies and tools.
• Excellent English communication skills
• Strong work ethic and customer focus
• Comfortable leveraging AI tools like GitHub Copilot to enhance productivity.