Вакансии Backend Developer

Наш майбутній колега має:

• Вищу технічну освіту;
• Досвід роботи в IT-компаніях не менше 2-х років;
• Високий рівень володіння C#, .Net Framework, .Net Core, ASP.NET, MVC 4, T-SQL, LINQ;
• Досвід роботи з Web API (SOAP або REST);
• Досвід роботи з ORM (Entity Framework, Dapper);
• Практичний досвід роботи з MS SQL Server, SSMS, Azure services;
• Розуміння та застосування в розробці принципів SOLID;
• Досвід розробки високонавантажених, масштабованих систем;
• Досвід розробки веб-додатків зі складною логікою.
• Англійська мова: на рівні читання та розуміння технічної документації;

Будуть плюсом знання:

• JavaScript
• web sockets
• XML
• В ідеалі – розуміння банківських процесів.

Основні завдання:

• Оптимізація та розробка високонавантажених серверних програм та інтеграційних сервісів;
• Участь у R&D проектах;
• Участь у проектуванні рішень;
• Розробка та доопрацювання складних модулів та їх інтеграції.

Covent IT is excited to announce new opportunities in our outsourcing division! We're actively involved in a variety of fascinating projects, including work in the fields of blockchain, CRM, and educational portals.
Our core technology stack includes:

• Front-end: Next.js, Redux Toolkit, Tailwind CSS
• Back-end: Node.js, TypeScript, MongoDB, Ethers.js

We are currently looking for talented Front-end, Back-end, and Full-stack Engineers to join our growing team. If you're passionate about technology and ready for a new challenge, we'd love to hear from you!

Our Expectations

• If you are a Front-end Engineer:
  • 3+ years of experience with React (18+/19) and TypeScript.
  • Hands-on experience with Next.js (15+), specifically:
  • Practical experience with Tailwind CSS, MUI, or Radix UI.
  • A solid understanding of using React Hook Form and Zod for form management and validation.
  • Confidence in working with Axios, React Query (TanStack), and Zustand.
  • Experience in development using architectural patterns like Feature-Sliced Design (FSD) or similar methodologies.
• If you are a Back-end Engineer:
  • 5+ years of experience developing backend solutions.
  • Proficiency in our core technologies: Node.js, Nest, TypeORM, Kafka, TypeScript, PostgreSQL, and AWS.
  • Experience with AI would be a huge advantage!
• If you are a Full-stack Engineer:
  • We would be thrilled to find someone with:
  • Proven experience as a Full-stack Engineer, backed by a strong portfolio showcasing your work.
  • Proficiency in our core technologies: Next.js, Redux Toolkit, Tailwind CSS, Node.js, TypeScript, and MongoDB.
  • Familiarity with Ethers.js and prior experience with blockchain technologies is a significant plus.
  • A solid understanding of software development best practices, including version control (Git), testing, and deployment.
  • The ability to work both independently and collaboratively within a team environment.
  • Excellent problem-solving skills and a proactive approach to challenges.
  • Strong communication skills and the ability to articulate technical concepts clearly.

We are looking for a qualified Java Engineer to design, develop, and maintain high-quality software applications using the Java programming language.

Our Perfect Candidate

• Strong knowledge and experience with languages and frameworks: Java 8 or more, Strong knowledge Spring (Core, MVC, Data, Security, Cloud), Hibernate or Spring Data, will be good: Play 2 or other middleware frameworks, Scala or Koltin;
• Experience with the following databases and storage tools: MySQL, PostgreSQL, Oracle, MSSQL or other SQL based Database, MongoDB or other document oriented database, DB replicates;
• Experience with the following protocols, libraries and APIs: Java core, Java multithreading and concurrency, Good understanding of HTTP, gson, jackson or other lib for work with JSON, Java Servlet API, FB/Twitter/Google etc api integration, Payments api experience, AWS/ Google cloud;
• Knowledge of and experience with such approaches and principles: Strong OOP / OOD / DDD / TDD, Understanding of Patterns, REST and ability use in work, Good understanding of MVC pattern, DI pattern, Algorithm knowledges, Strong understanding of SQL, Functional approaches, Microservices architecture, Third party services integration, Kafka / Rabbit etc;
• Experience with such technologies and tools: Maven / Gradle, IDE Java debug tools, Java profiler, Git, Good linux administrator level will be good, Docker, Clustering experience, Nginx.

Key Qualifications/Responsibilities

• Estimate tasks provided by a Project Manager (PM) or Technology Lead (TL);
• Complete tasks from PM or TL within the estimated time;
• Participate in the SCRUM process;
• Participate in project development;
• Perform technical research;
• Keep technical documentation of the project;
• Prepare reports;
• Communicate with customers;
• Work on improvements of the current project.

Join us as a Senior PHP Developer and help build a global health and well-being platform. You’ll work with PHP, AWS, and modern frameworks to develop large-scale, high-performance solutions. Enjoy remote work, flexible time off, and professional growth opportunities in a collaborative, supportive team.

About the project

The health app you’ll contribute to is a comprehensive well-being platform designed for companies worldwide. It’s the go-to resource for employees seeking support, guidance, and advice on challenges in their work and personal lives. Whether it’s reading an article on mental health, completing a financial assessment, or connecting with a counselor, the app has you covered.
It also offers fitness tracking, integrations, perks like gift cards, and social recognition features – all aimed at promoting employee well-being and fostering a positive workplace culture.

What we’re looking for

Technical skills matter, but what we value most is a positive attitude and a willingness to learn. Our backend team is looking for people who enjoy solving problems, building new things, and supporting their teammates. Strong communication, teamwork, and a knack for mentoring others are key to helping the whole team grow. If you’re excited about growing your career with new technologies in a collaborative, supportive environment, this could be the perfect fit for you.

Language-specific requirements

• 5+ years job experience as a software developer
• 3+ years experience with PHP
• Experience with Laminas, Zend or Symfony
• Experience with Docker
• Experience with a cloud platform such as AWS, Google Cloud, or Azure
• Experience writing tests and knowledge of TDD
• Knowledge of development principles such as OOP and SOLID
• Experience with relational and non-relational databases such as MySQL, Postgres, Mongo, and Dynamo
• Experience with CI/CD platforms such as CircleCI, Travis, GitHub Actions, or ADO
• Experience with static analysis tools like PHPStan, Psalm, and PHPMD
• English and Ukrainian languages at Upper Intermediate level or higher

Nice to have:

• Experience with Nginx or Apache configuration
• Experience with AWS services such as ECS, EKS, Lambda, SQS, SNS, and Event Bridge
• Experience with multiple software development languages, ideally Python, Node JS, or TypeScript
• Knowledge of Clean Architecture and DDD principles

We are looking for a Technical Lead to spearhead the design, development, and advancement of our core services powering blockchain-based applications. This position requires a strong combination of technical leadership, hands-on engineering, and team management. You’ll guide a skilled team in building scalable, secure backend systems while also playing an active role in defining architecture and writing code.

Requirements

• 6+ years of backend or systems engineering experience with at least 2+ years in a technical leadership or line management role.
• Strong proficiency in one or more programming languages (e.g., Go, Rust, Java, Python).
• Proven experience building distributed systems or backend infrastructure, ideally for blockchain or decentralized applications.
• Solid understanding of cryptographic principles, consensus algorithms, or related blockchain components is a strong plus.
• Demonstrated ability to lead engineering teams while staying technically hands-on.
• Strong communication, interpersonal, and organizational skills.

Would be a plus

• Experience in Web3, DeFi, or other blockchain-related domains.
• Familiarity with containerized microservices (Docker, Kubernetes), cloud infrastructure (AWS/GCP), and CI/CD pipelines.
• Contributions to open-source blockchain projects are a big plus.
• Knowledge of performance profiling, observability, and scalability techniques.

Responsibilities

• Technical Leadership:
  • Design and implement core backend services for blockchain applications, including APIs, messaging systems, identity/auth, wallet integration, storage, and data services.
  • Define and enforce engineering best practices and coding standards.
  • Drive architectural decisions in collaboration with senior engineers and stakeholders.
  • Stay abreast of blockchain trends and translate those into strategic opportunities for the team.
• Team Management:
  • Provide direct line management to a team of engineers: hiring, performance management, mentoring, and career development.
  • Foster a culture of accountability, continuous learning, and engineering excellence. Balance resource allocation across development, support, and innovation initiatives.
• Cross-functional Collaboration:
  • Work closely with Solution, DevOps, and Security teams to align technical capabilities with business needs.
  • Translate product requirements into actionable technical plans.
  • Champion communication and transparency between technical and non-technical stakeholders.

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.

We’re looking for a Senior Software/Data Engineer to join our client, a leading digital platform in the subscription-based content industry. Their product handles millions of daily interactions, providing seamless access to ebooks, audiobooks, and other media.
This remote position, ideally suited for candidates located in Europe or LATAM, is perfect for someone who enjoys backend development with a strong emphasis on cloud architecture and data processing.

About the project

Client is an American e-book and audiobook subscription service that includes one million titles. The platform hosts 60 million documents on its open publishing platform.
Core Platform provides robust and foundational software, increasing operational excellence to scale apps and data. As a Backend Engineer, your focus will be on building and optimizing scalable backend systems and data pipelines that support real-time processing and event-driven architectures.
Tech Stack: Python, AWS Cloud Services (eg. ECS, EKS, Lambda), SQS, Kafka, IaC, Terraform, Apache Spark, Databricks, Airflow

Must-have for the position

• 5+ years of experience as a professional combined experience in software engineering and data engineering with Python (Familiarity with Ruby is a plus).
• Proven track record of designing and delivering complex software systems with minimal supervision.
• Experience building and maintaining high-throughput systems or data pipelines handling millions of requests daily.
• 3+ years of deep experience with AWS cloud services.
• Hands-on experience deploying solutions to production environments using ECS, EKS, or AWS Lambdas.
• Ability to test, profile, and optimize systems for performance and scalability.
• Proficiency with Infrastructure as Code using Terraform.
• Experience working with real-time data processing, queues, or event streams (e.g., SQS, Kafka).
• Bachelor’s degree in Computer Science or equivalent practical experience.
• Strong communication skills and a collaborative mindset.
• Excellent English skills and the ability to engage with both technical and non-technical stakeholders.

Will be a strong plus

• Experience with Apache Spark, Databricks, or similar distributed data processing frameworks.
• Workflow orchestration experience using Apache Airflow.
• Exposure to Machine Learning pipelines or ML-driven applications.

Responsibilities

• Design and deliver complex software systems, ensuring scalability, reliability, and maintainability.
• Develop high-performance backend solutions, primarily using Python; optionally contribute to Ruby-based components.
• Build and maintain robust data pipelines and high-throughput systems processing millions of requests per day
• Deploy and operate cloud infrastructure leveraging AWS services (ECS, EKS, Lambda).
• Test, profile, and optimize system performance for efficiency and scalability.
• Work with real-time data processing systems, queues, and event-driven architectures (e.g., Kafka, SQS).
• Implement infrastructure as code (IaC) using Terraform for consistent and reliable deployments.
• Collaborate cross-functionally with other engineering and product teams, sharing knowledge and participating in architectural decisions.
• Conduct code reviews and provide mentorship, promoting engineering best practices and continuous team improvement.

As our company experiences active growth, we are actively seeking an optimistic and enthusiastic PHP-Developer Slotegrator is a leading provider of B2B solutions for the iGaming industry. We develop a complete software package for online business. Slotegrator provides its clients with the highest quality platform solutions, proven gaming content, and expert-level support.

You will be responsible for:

• Integration of third-party services;
• Development, support, and refactoring of the main monolith and individual services;
• Managing and reducing technical debt;
• Active collaboration with DevOps, QA automation teams, and analysts, including grooming of team tasks.

Requirements:

• Strong knowledge of PHP;
• Proficiency in design patterns and adherence to SOLID principles;
• Experience in writing tests (unit, functional);
• Experience with popular frameworks such as Yii or Symfony;
• Experience in third-party service integration (analyzing documentation and adapting interactions);
• Ability to work with databases such as MySQL (MariaDB), Redis (KeyDB), ELK;
• Experience working with queues;
• Ability to work independently, objectively assess your capabilities, and prioritize effectively.

Основні завдання:

• 5+ років досвіду розробки продакшн-додатків на PHP і PostgreSQL;
• Досвід роботи з високонавантаженими проектами обов'язковий
• Відмінні навички роботи з PostgreSQL, Redis, RabbitMQ, php-fpm обов'язково;
• Знання DDD та/або Clean Architecture є великим плюсом;
• Досвід роботи з фреймворками PHP MVC;
• Інтеграція багатьох джерел даних і баз даних в одну систему;
• Інтеграція веб-сервісів за допомогою таких технологій, як XML, SOAP, REST;
• Досвід створення спокійних веб-сервісів JSON.

Обов'язки:

• Створюйте ефективні модулі PHP, які можна тестувати та багаторазово використовувати;
• Рішення проблем ефективності обслуговування пов'язане з високим навантаженням;
• Активно брати участь у заходах із забезпечення якості, включаючи перевірку дизайну та коду, модульне тестування, виправлення дефектів, готовність до експлуатації;
• Досвід розробки програмного забезпечення на основі загальних гнучких методологій розробки додатків, TDD/Scrum;
• Знайомство з керуванням джерелами (Git), системами відстеження помилок (JIRA), системами побудови та керування залежностями (Composer), безперервною інтеграцією (GitLab), пакуванням та розгортанням (Docker).