Вакансії Backend Developer

We are looking for a seasoned, product-minded software engineer with low-latency distributed systems experience to power our real-time web monitoring SaaS platform, checking hundreds of millions of URLs 24×7. The individual will play a pivotal role in the design, development, and maintenance of our web monitoring platform. We are looking for a candidate who possesses a strong delivery and problem-solving mindset, as well as a can-do attitude to shape the future of our data infrastructure. The individual will be working with a stack of technologies, such as PHP 8, RabbitMQ, Elastic, MySQL, and Redis, among others. The successful candidate must thrive in ambiguity and possess a strong decision-making capability, a sense of accountability, and a collaborative and supportive attitude. The candidate must have a passion for solving hard problems with technical expertise and a growth mindset, using strong engineering rigor and data-driven operational skills to drive the desired outcomes across global teams.

Job Description

In this role, you will work with a leading platform for website optimization and digital intelligence. Today’s top global brands use it to create and enhance digital experiences that are organically discoverable in search engines and deliver real value to users. The platform combines actionable SEO insights, content, and technical website intelligence, along with real-time monitoring, to help businesses accelerate – and safeguard – their digital growth.
It’s a mission-driven environment that prioritizes innovation, customer success, and strong culture. The team is passionate about making a meaningful impact – for their customers, their users, their people, and the broader community.

Requirements:

• A hands-on PHP 8 engineer with 6+ years of experience in building scalable and secure distributed systems powering 24×7 uninterrupted operations;
• Understanding of the HTTP protocol;
• Multi-year experience with Elastic and RabbitMQ or similar technologies is required;
• PHPStan or Psalm knowledge is required;
• Strong understanding of modern distributed systems practices;
• Experience with relational and non-relational databases;
• Proficiency with solution discovery and delivery using rapid prototyping, experimentation, and iterative development;
• Excellent verbal and written communication skills – ability to clearly communicate technical solutions to complex problems to both technical and non-technical audiences;
• Experience with AWS is not required but would be considered a plus.

Responsibilities:

• Collaborate with application developers, infrastructure experts, and other stakeholders to gather requirements, design and implement solutions that meet business needs, and execute the enterprise strategy;
• Develop, maintain, and test our advanced crawling systems, ensuring low latency, high availability, and cost efficiency;
• Design, implement, and review technical RFCs and solutions;
• Stay up to date with industry trends, standards, best practices, and emerging technologies to continuously improve our systems;
• Appreciate working across stacks in an organization without silos;
• Be motivated to understand the challenges in the SEO space, have a passion for solving problems and not just delivering features;
• Influence strategic thinking across the team. Advocate for best practices, investigate new technologies, and mentor other engineers.

Right now, we’re looking for a skilled Python Developer with a passion for AI to join our team. You’ll be working on a meaningful and technically exciting project for one of our cherished clients.

About the project:

The project involves the development of a Python application integrated with the Feedly news service, ChatGPT, and a client's content management system.

Requirements

• Python-Related Skills
  • At least 3 years of experience with Python 3
  • Familiarity with Python frameworks: Django, FastAPI
  • Understanding of Python best practices and technical approaches
  • Familiarity with OAuth flows
  • Proficient in Docker usage
  • Experience with REST and WebSockets
  • Experience with message brokers like RabbitMQ, Apache Kafka, NSQ, and task queues like Celery
• Data Management
  • Strong knowledge of SQL and NoSQL databases: MySQL/MariaDB/PostgreSQL, MongoDB
  • Experience with search technologies: Elasticsearch, Apache Solr
  • Familiarity with vector databases
  • A general understanding of data analytics is a plus
• AI & Machine Learning
  • Solid understanding of AI concepts: Machine Learning, Deep Learning, Large Language Models (LLMs)
  • Experience integrating SaaS-based AI solutions (OpenAI, Anthropic, etc.)
  • Strong understanding and practical experience with prompt engineering
  • Experience with ML frameworks like PyTorch and TensorFlow is a bonus
• Other Technical Skills
  • Experience with cloud platforms: AWS (understanding Lambdas is a plus), Google Cloud, or DigitalOcean
  • Experience with Drupal will be much appreciated and considered a strong advantage
• General Requirements
  • Experience in technical communication with clients
  • Experience in technical estimation during presales
  • Ability to propose solid technical solutions
  • English: Upper-Intermediate or higher

Responsibilities

• Backend development and implementation of required features;
• Development of AI-driven solutions including prompt engineering, ML/LLM solutions
• Collaborating with other developers, designers, and project managers to ensure that all projects are delivered on time and to a high standard;
• Staying up-to-date with the latest developments in Python and related technologies to ensure that you are able to deliver the best possible results for the project and be able to participate in technical evaluations during the pre-sales phase.

We are currently expanding our internal development team and are looking for an experienced PHP Developer with a solid background in Laravel

Requirements

• 3+ years of experience in PHP development
• Strong knowledge of Laravel
• Good understanding of OOP, SOLID, MVC and REST APIs
• Experience with MySQL, PostgreSQL, and database optimization
• Experience with queues and background jobs (e.g., Laravel Queues, Redis, RabbitMQ)
• Familiarity with Docker, Git, CI/CD tools
• Experience writing unit tests and maintaining API documentation (Swagger/OpenAPI)
• Experience with Elasticsearch
• English – Intermediate level or higher (spoken and written)
• Ability to work independently and in a team environment

Responsibilities

• Develop and maintain scalable backend solutions using PHP (Laravel)
• Participate in the architecture and design of backend systems
• Integrate third-party services and APIs
• Write clean, maintainable, and testable code
• Collaborate with frontend developers and QA team
• Optimize application performance and troubleshoot issues
• Create unit tests and technical documentation (Swagger, Open API)

Nice to have

• Experience with other PHP frameworks: Symfony, Yii2, etc.
• Experience with other programming languages (e.g., Node.js, Go, Python)
• Experience with other relational and non-relational databases (e.g., MongoDB)
• Experience with cloud platforms (AWS, GCP, Azure)
• Basic understanding of frontend technologies (HTML, CSS, JavaScript)

Our client is a leading provider of unified observability and automation solutions for distributed enterprise edge environments. The platform enables organizations to achieve real-time visibility and control across retail, transportation, and telecom sectors, managing complex IT and IoT infrastructures with scale and precision.

About the Product:

The platform gathers and processes real-time data from critical edge devices such as POS terminals, kiosks, and vehicle systems, providing rapid detection of issues and system optimization. Supported by significant strategic investment, the solution powers operations across hundreds of managed environments globally.

About the Role:

We’re looking for a strong Senior C++ Engineer to strengthen the core of the monitoring platform. You’ll work on analyzing, optimizing, and refactoring critical C++ components to improve scalability, performance, and maintainability, ensuring the platform’s real-time capabilities remain robust and future-ready. You will also prepare the system for SaaS and multi-tenant operations.

Key Responsibilities:

• Enhance and optimize key C++ components responsible for real-time data processing.
• Refactor system architecture to improve scalability and stability.
• Diagnose and fix memory leaks, performance bottlenecks, and system vulnerabilities.
• Lead architectural improvements and promote clean coding standards.

Required Competence and Skills:

• 5+ years of hands-on experience in C/C++ development.
• Strong experience working in Linux/Unix environments.
• Solid understanding of NoSQL and SQL databases.
• Proven experience designing scalable, multi-threaded backend systems.
• Strong system design and software architecture skills.
• Familiarity with Git version control workflows.
• Excellent written and verbal communication skills in English.

Nice to have skills:

• Experience with Kubernetes and Docker.
• Familiarity with CI/CD pipelines.
• Experience with microservices architecture.

We are looking for a Senior Python Developer to join our team and develop innovative projects using Python, DRF, Flask, and different databases.
Ideally, you need to have a passion for programming, great soft skills, and good English. Also, you should have at least 4 years of commercial experience and be ready to new challenges.

Requirements

• 4+ years of commercial experience with Python
• 2+ years of DRF experience
• Proficiency with Python 3 and the Python 3 ecosystem
• Experience with Flask will be a plus
• Upper-Intermediate English level (written, spoken)
• Strong knowledge of databases (e.g. PostgreSQL, MySQL, MongoDB)
• Experience with writing and implementing APIs (e.g. REST API)
• Knowledge of microservice architecture
• Experience with cloud architecture (AWS)
• Strong knowledge of OOP

Responsibilities

• Write a high quality code and maintaining existing code
• Independently handle project activities related to builds and deployments
• Implement back-end functionality according to requirements
• Code review, code optimization
• Team planning, proper estimations, commitments
• Collaborate with the rest of the engineering team to design and launch new features
• Share expertise within the team

We are looking for a talented Node.js developer to join our team and develop innovative projects using JavaScript, Node.js, and different databases. Ideally, you need to have a passion for programming, great soft skills, and good English.

Requirements:

• Experience with Node.js
• JavaScript, TypeScript
• Working with databases SQL/NoSQL: Redis, MongoDB, MySQL, PostgreSQL
• Knowledge of OOP
• English level: Intermediate+ (written and spoken)
• Desire to work and study new technologies, approaches, and best practices
• Attentive to details

Will be a plus:

• Knowledge of Front End Development
• Bachelor's degree in Computer Science or an equivalent

Responsibilities:

• Write clean and maintainable code using Node.js
• Testing modules and integration
• Development of the server part of the application
• Implement back-end functionality according to requirements
• Staying current on new technologies and best practices
• Communicate with the customer and team members

We are looking for a Strong Junior Node.js Developer with deep knowledge of backend development to work on a B2B2С loyalty system.
We expect a strong understanding of ACID, SOLID, CAP theorem principles and experience in creating scalable and fail-safe solutions, as well as the ability to work with architecture, complex business logic, and integrations with third-party services.
Your tasks will include developing new functionality, implementing solutions for new clients, and supporting existing integrations.

Your skill set:

• 1.5+ years of experience working with Node.js (Express, Koa);
• Knowledge of best practices in Node.js development;
• Strong experience with MySQL or PostgreSQL;
• Hands-on experience with TypeORM or Sequelize;
• At least 1 year of experience with Docker;
• Thorough understanding of the event-oriented model in Node.js;
• Experience with test frameworks (Mocha, Jest, Ava);
• A good understanding of basic cryptography concepts (hash functions, encryption, encoding);
• Understanding of the concept of MVC and SOLID principles;
• Understanding of SDLC;
• Basic knowledge of Linux distribution administration.

Would be a plus:

• Knowledge of JavaScript runtime environments;
• Understanding of clean architecture principles;
• Knowledge and experience with MongoDB and Mongoose;
• Understanding of algorithmic complexity and the ability to analyze and manage it;
• Ability to work with monitoring systems and analyze metrics;
• Experience with AWS, Azure, or GCP;
• Knowledge and understanding of modern web development (ES6, Webpack, ESLint);
• Experience in designing, developing, or publishing libraries or packages.
• Intermediate level of English.

The project involves implementing an idea from scratch to develop a cross-platform software solution for automating the creation of laboratory journal templates, their storage, and the ability to share these templates. The solution will leverage AI and support real-time cloud updates.
We are looking for a full-time Senior .NET Engineer with AI/LLM expertise to join our team.

Requirements:

• Five-year working experience with .NET (at least)
• 1 year of working experience with AI/LLM technologies (at least)
• Hands-on experience with a minimum of two projects utilizing OCR and/or NLP technologies
• Excellent knowledge of C#, ASP.NET Core, Entity Framework Core
• Good knowledge of OOP and SOLID
• Experience with Azure AI Studio
• Experience with Microsoft Azure services (Front Door, Static Web App, App Service, Blob Storage)
• Experience with Azure SQL, Microsoft SQL Server, Firebase, or PostgreSQL
• Bachelor’s or Master’s degree in computer science (or similar technical field)
• Level of English: Upper-Intermediate (at least)

Would be a plus:

• Experience with text summarization/structuring
• Knowledge of at least one UI framework (Angular, React, Vue.js)
• Knowledge of TypeScript, HTML, CSS, JS
• Experience with CI/CD
• Knowledge of Kubernetes
• Experience with containers (Docker)

Responsibilities:

• Research, study, and develop new or complex technical solutions/technologies (R&D) with active use of modern AI technologies
• Develop well-designed, easy-to-maintain, scalable, and reusable software
• Design, document, and demonstrate software architecture
• Develop automated unit tests, collect code coverage
• Implement performance/load/stress testing procedures according to project needs
• Provide continuous integration practices on the projects
• Setup integration with external software

Quantum is expanding the team and has brilliant opportunities for a Senior Software Engineer. The client is a technological research company that utilizes proprietary AI-based analysis and language models to provide comprehensive insights into global stocks in all languages. Our mission is to bridge the knowledge gap in the investment world and empower investors of all types to become “super-investors.”
Through our generative AI technology implemented into brokerage platforms and other financial institutions’ infrastructures, we offer instant fundamental analyses of global stocks alongside bespoke investment strategies, enabling informed investment decisions for millions of investors worldwide.

Must have skills:

• 5 years of Python development experience
• Strong hands-on experience with Kubernetes and containerization
• Strong SQL and NoSQL database knowledge
• Experience with Docker, CI/CD, and Git
• Expertise in AWS services
• Familiarity with Airflow or other workflow orchestration tools
• At least an Upper-Intermediate level of English (spoken and written)

Would be a plus:

• Experience with LLMs (Large Language Models)

Your tasks will include:

• Develop and maintain services with LLM based solutions
• Optimize ETL processes and integrate models into production
• Deploy and manage pipelines on AWS
• Work with Kubernetes for container orchestration
• Collaborate with Data Scientists to ensure pipeline efficiency