Вакансии Backend Developer

Kyivstar TV invites a Java Developer (middle) to ensure the development of projects and support work processes in the company.

Required skills:

• 3+ years of commercial strong Java experience, Java 8+ knowledge;
• experience with Spring framework not SpringBoot, also (SpringBoot, Data, Security);
• experience with MongoDB, Redis;
• experience with search engines (Elasticsearch, Solr);
• experience with Docker (mandatory) and Kubernetes (advantage);
• experience with message brokers (RabbitMQ, SQS/SNS);
• knowledge of SOLID/GRASP OO design principles;
• understanding of tomcat servlet container;
• experience in clean code techniques, refactoring and testing.

Nice to have:

• Experience in Cloud Computing Platforms (AWS/aws-sdk);
• Java or any cloud Certification;
• experience in working with distributed and high-availability systems;
• ability to adopt new technologies fast;
• excellent communication, attitude and teamwork skills;
• ability to function both independently and in a large team;
• passion towards making great products.

Responsibilities:

• development of new functionality for the platform;
• optimization of current functionality;
• сovering existing code with tests;
• analysis and data collection for further decision-making on optimization of certain parts of the application;
• refactoring existing code / refactoring modules;
• migration from jersey servlet api to spring web api;
• migration from Morphia to Spring Data;
• migration from Scala to Java;
• business requirements analysis and solution planning;
• writing technical documentation / working on diagrams of system components;
• participation in the design and optimization of architectural solutions;
• manual testing (dev-testing) to establish that each element of the software meets the requirements and identifying defects.

NERDZ LAB is looking for a Back-End Developer to join our team full-time. The ideal candidate is a highly resourceful and innovative developer with extensive experience in PHP programming language and Laravel framework.

Skills and qualifications:

• 2+ years of experience in PHP, Laravel;
• Experience with Amazon Web Services infrastructure;
• Familiarity with Git in a team;
• Experience working with API integrations for 3rd party services;
• Experience with MySQL;
• Basic knowledge of HTML/CSS;
• The ability to understand someone else’s code;
• Ability to solve problems and make decisions with limited information;
• Intermediate or higher English Level.

Will be a plus:

• SaaS development experience;
• Experience with AWS;
• Experience with Laravel Nova.

Ми шукаємо Senior Back-end Developer на борт нашої команди тіммейтів. Якщо ти захоплюєшся створенням надійних систем і отримуєш задоволення від написання чистого та ефективного коду, це твій шанс засяяти. Занурся в наш стек провідних технологій, переважно PHP, і допоможи зробити продукти MOJAM найкращими у світі.

Твої задачі:

• Працювати над доменами платежів, антифроду та аутентифікації в наших застосунках (з потенціалом для розширення).
• Будувати та наставляти команду для підтримки цих доменів.
• Виконувати продуктові завдання:
  • Зосереджуватись на критичних шляхах користувачів;
  • Розробляти нові функції;
  • Підтримувати та вдосконалювати наявні функції;
  • Інтегрувати сторонні сервіси.
• Вирішувати технічні виклики:
  • Покращувати якість коду для підвищення стабільності, UX та швидкості розробки.

Твої суперсили:

• 5+ років досвіду в бекенд-розробці;
• 2+ роки досвіду з PHP;
• Високий рівень володіння англійською (B2+);
• Досвід роботи з такими фреймворками, як Yii2, Laravel або Symfony;
• Знання SQL баз даних, кешів і черг (ми використовуємо MariaDB і Redis);
• Навички написання unit-тестів;
• Досвід роботи з віртуалізацією (Docker);
• Розуміння патернів розробки та архітектури ПЗ;
• Орієнтація на цінність продукту понад інженерну досконалість.

Буде перевагою:

• Знаєш про DDD і TDD;
• Досвід у створенні модульних/сервісно-орієнтованих додатків;
• Маєш широкі знання баз даних;
• Розуміння комп’ютерних наук (алгоритми та структури даних);
• Досвід роботи з Kubernetes і AWS;
• Працював з фінансовими системами, системами аналітики ризиків або системами аутентифікації;
• Знайомий з сучасними не-PHP мовами (TypeScript, Python, Go, C# тощо);
• Активний на GitHub.

Mirko Solutions is a young team of charged people, ready to work for results. We provide a full range of services in the development and support of websites, platforms, CRM, applications for Android and iOS.
We continue growing rapidly, so now we are looking for a proactive and seasoned PHP (Symfony) developer.

Main requirements:

• 2+ years of commercial experience with PHP;
• knowledge of PHP 8 and Symfony 5;
• experience with API platforms;
• experience with CodeSniffer, PHPStan;
• work with coordinates in database and MACH methods;
• proven experience with EasyAdmin, Docker;
• knowledge of RabbitMQ, Redis, S3 bucket;
• Upper-Intermediate level of English.

Will be a plus:

• experience with Symfony 6;
• experience with creating scripts to import data.

We are seeking a skilled Node.js AI Developer to contribute to our innovative projects.

Our main requirements are:

• Experience in hands-on programming 3+ years;
• Experience with Node.js (Vanilla/Typescript) ;
• Experience with NestJS also and/or NextJS and/or Express;
• Strong creating with SQL/NoSQL databases efficient design from scratch as well as performing optimizations;
• Strong knowledge of Computer Science: data types, data structures, algorithms;
• Being proficient working on modern tech stack: Docker, Kubernetes, CI/CD, IaC (e.g. Terraform), Ansible, etc.;
• Having a wide strong background working with AWS (smth beyond EC2 and S3);
• Understanding and applying software design principles;
• Experience designing software systems (distributed, high availability, resilient);
• Comfortable working with Agile and Design Thinking (however understanding that pure Agile is a myth);
• Strong communication skills in English (B2 and higher).

Will be considered as a plus:

• Experience with Python;
• Experience with modern SPA frameworks like React/Vue.js/Angular;
• Experience writing technical documents, tracking technical debt, understanding refactoring, etc.;
• Experience working with AI libraries and/or 3rd parties like chatGPT, Claude, Gemini.

The project's purpose is to develop a comprehensive sophisticated solution to drive negotiations between USA healthcare system players.
Key technical aspects: Complicated code base, service-oriented architecture, infrastructure as a code, low downtime, SOC2 compliance, release planning.

Job highlights:

• Possibility to work with microservice architecture using modern technologies.
• Possibility to work in an agile team using scrum methodology.
• Development is being done in accordance with all quality standards.
• An opportunity to work as a full-stack developer at will.

Responsibilities:

• Developing new functionalities with well-written acceptance criterias.
• Communication with a client about new features, and their feasibility.
• Preparing technical acceptance criterias for stories.
• Designing technical solutions for different client initiatives.

Qualifications:

• 4+ years of software development experience;
• Experience with Java & Spring framework;
• Understanding the principles of OOP, SOLID and the ability to apply them in practice;
• Knowledge of the principles of clean code and the ability to apply them;
• Secure Coding Practices;
• Experience in unit- or system testing;
• Experience with DB (PostgreSQL, MSSQL, MySQL, etc.);
• Level of English Upper-Intermediate and above.

About the Product:

proteanTecs is a game-changing startup redefining the way advanced electronics monitor their own health. In a world driven by AI, cloud computing, and autonomous systems, reliability isn’t optional – it’s essential. But how do you ensure peak performance and prevent failures before they happen?
That’s where proteanTecs comes in. The product provides real-time visibility into next-gen chips while they operate, using cutting-edge on-chip monitoring, machine learning, and predictive analytics. The technology helps companies build smarter, more resilient, and more efficient computing systems – eliminating blind spots and unlocking deep insights like never before.
The solution is already trusted by industry leaders in data centers, automotive, communications, and consumer devices.

About the Role:

proteanTecs is looking for a talented Senior Java Engineer to join the ride as we spearhead the next revolution in electronics. Your work will directly contribute to making electronics smarter, safer, and more reliable – powering everything from data centers to autonomous vehicles. As part of a fast-paced startup, you’ll take on diverse challenges, adapt quickly, and see your solutions shape the future of technology. You will be involved in end-to-end feature delivery alongside a team of 200+ industry-leading professionals who are passionate about innovation and knowledge-sharing. You’ll be working with cutting-edge tools, machine learning models, and advanced platforms to push the boundaries of what’s possible.

Key Responsibilities:

• Develop and maintain robust, scalable, and secure Java-based software solutions
• Collaborate with product managers, architects, and other engineers to design and implement new features
• Build and optimize data processing pipelines for high-volume analytics applications
• Ensure software quality through code reviews, unit testing, and integration testing
• Participate in architectural decisions, contributing to the design of cloud-based systems
• Monitor and optimize system performance to meet scalability and reliability goals
• Troubleshoot, debug, and resolve issues in development, staging, and production environments.

Required Competence and Skills:

• BA or B.Sc in Computer Science or an equivalent field
• 5+ years of hands-on experience in Java development
• Strong understanding of object-oriented programming, design patterns, and clean code principles
• Familiarity with database systems (SQL/NoSQL) and query optimization techniques
• Knowledge of cloud platforms (AWS, Azure, GCP) and microservices architecture
• Experience with Spring Boot and the Spring Framework ecosystem
• Experienced with JPA (Hibernate – advantage)
• Strong understanding of REST API
• Excellent problem-solving skills and a proactive attitude
• Strong communication skills and the ability to collaborate in a team environment

Nice to have:

• Experience with Python is a strong advantage
• Experience with streaming or messaging services (Kafka, RabbitMQ)
• Knowledge of monitoring tools such as Grafana, Prometheus, or ELK Stack
• Hands-on experience with containerization and orchestration (Docker, Kubernetes)
• Familiarity with big data technologies like Apache Flink or Spark
• Experience in performance optimization and distributed systems.

We are a dynamic and innovative company focused on delivering high-quality solutions to our clients. As we expand our development team, we're looking for a skilled Middle Back-end Engineer with expertise in Node.js to help us build robust and scalable applications.

Responsibilities

• Development of new features
• Maintenance of existing functionality
• Participate in software, and architecture design meetings
• Write clean, testable, maintainable code, and continue to grow your development skills
• Communicate with all team members on the search for ideas, concept creation, design process and development of new function

Requirements

• JS (ES6+)
• Typescript
• Node.js + Express.js
• Nest.js or Next.js
• REST API and GraphQL basic knowledge
• MongoDB + SQL databases (MySQL or PostgreSQL)
• ODM and ORM for work with db (Mongoose, TypeORM, Knex, Sequelize)
• Git
• Development tools for debugging (Postman, debugger, prettier, eslint and other)
• API documentation (swagger)
• Good Linux knowledge
• Working with a third-party API
• Basic knowledge Docker and other
• Functional programming+OOP
• 2,5+ year of experience as an Web developer
• English at the Intermediate level or higher

Our client is a global asset, investment, and financial product management company operating across the United States and in over 40 other countries.

Position overview

We are seeking a skilled Python Developer to join our dynamic investment team. In this role, you will develop cutting-edge financial models, automate trading strategies, and optimize portfolios. The ideal candidate is passionate about finance and has a strong grasp of Python’s data analysis libraries.

Responsibilities

• Develop and maintain algorithmic trading systems
• Analyze market data and create financial models
• Collaborate with quantitative analysts to optimize investment strategies

Requirements

• 5+ years of Python experience
• Strong knowledge of SQL
• Hands-on experience with AWS ECS
• Experience with Pandas
• Extensive knowledge and experience with SDLC tools such as Jira, Git, Docker, Jenkins
• Strong analytical and problem-solving skills within a fast-moving and dynamic environments
• Proactive and ownership mentality

Nice to have

• Aurora DB experience
• Familiarity with Fast API
• Experience with other AWS Cloud tools
• Knowledge and experience in portfolio and trading model construction
• In-depth knowledge of datasets from financial institutions and information service providers
• Experience in building web applications using React
• Experience with Java
• Experience with Data Engineering