Вакансії Backend Developer

On behalf of our Client, a well-established financial institution from the Caribbean region Mobilunity is looking for a .NET Developer.
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.

Responsibilities:

• Develop and maintain scalable and efficient backend services.
• Write clean, maintainable, and efficient code, adhering to best practices and coding standards.
• Develop and maintain RESTful APIs for integration with front-end services and external services.
• Integrate third-party services and maintain data integrity.
• Implement unit and integration tests to ensure robustness and reliability of backend services.
• Optimize applications for speed, scalability, and data security

Requirements:

• Proficiency in .NET and corresponding frameworks.
• Strong knowledge of database technologies and web server technologies (e.g., Apache, Nginx).
• Familiarity with version control tools such as Git and experience with RESTful API development.
• Excellent problem-solving skills, communication skills, and attention to detail.
• Bachelor’s degree in computer science, Software Engineering, or related field.
• Level of English – Upper-Intermediate and higher.

On behalf of our Client, a well-established financial institution from the Caribbean region Mobilunity is looking for a Tech Lead .NET Developer.
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.

Requirements:

• Experience as a Team Lead
• Proficiency in .NET and corresponding frameworks.
• Strong knowledge of database technologies and web server technologies (e.g., Apache, Nginx).
• Familiarity with version control tools such as Git and experience with RESTful API development.
• Excellent problem-solving skills, communication skills, and attention to detail.
• Bachelor’s degree in computer science, Software Engineering, or related field.
• Level of English – Upper-Intermediate and higher.

Responsibilities:

• Develop and maintain backend services using PHP 8+ (Symfony or Laravel)
• Design and implement scalable RESTful APIs
• Refactor and optimize legacy systems
• Collaborate on architecture decisions and code reviews
• Work with Docker and Kubernetes in production environments
• Support and improve CI/CD pipelines
• Follow TDD/BDD practices and contribute to A/B testing initiatives

Requirements:

• 5+ years of backend development experience
• Strong hands-on knowledge of PHP with Symfony or Laravel
• Solid understanding of microservices architecture
• Experience with relational (MySQL, PostgreSQL) and NoSQL (MongoDB) databases
• Familiarity with Docker, Kubernetes, and CI/CD pipelines
• Strong testing mindset (PHPUnit, Postman)
• English proficiency (B1+) for team communication

We are seeking a skilled Backend Developer with a strong background in Python and experience with integrating third-party services. This role focuses on enhancing our payment gateway platform, supporting a wide range of payment methods and use cases. As part of a transitioning architecture from a monolithic to a microservices approach, you'll play a key role in developing scalable and efficient backend systems. The ideal candidate will be comfortable delivering high-quality code while working within a collaborative Scrum environment.

We're looking for a Python Backend Developer who has:

• Experience working with microservices and event-driven development.
• Proficiency in integrating APIs, with prior experience working with payment gateways considered a strong advantage.
• A solid understanding of basic cryptography and security practices.
• Experience with developing and managing Python packages/SDKs.
• Familiarity with CI/CD practices and tools.
• Knowledge of logging best practices, especially in distributed systems.
• Prior exposure to payment method integrations will be a plus.

Tech Stack:

• AsyncIO Python
• FastAPI / Pydantic
• Poetry
• RabbitMQ
• PostgreSQL (CockroachDB is a plus)
• Docker (Swarm)

Nice to Have:

• Experience with Clickhouse, Django, Flask, and Keycloak
• Familiarity with ElasticSearch, Elastic APM, Kibana, and Sentry
• Experience with GitLab CI/CD, Domain-Driven Design, and StatsD
• Understanding of SFTP

As a Python Backend Developer, you will:

• Develop and implement integrations with external payment systems, supporting various payment types and scenarios.
• Build and optimize scalable RESTful APIs to facilitate seamless communication between backend services.
• Write unit and integration tests to ensure system stability and reliability, and handle debugging in both production and development environments.
• Deliver clean, maintainable, and well-documented code for internal review and approval.
• Contribute to creating thorough documentation for APIs, workflows, and integration procedures.
• Assess and estimate tasks accurately and ensure timely delivery according to the sprint deadlines.

We are looking for a Java Developer to help build a Stablecoin Issuing Platform for regulated financial institutions (EMIs and DASPs). The platform integrates with blockchain networks, digital asset custody providers, payment banks, and customer service systems to enable secure and compliant stablecoin issuance and management.

About project

We are building a Stable Coin Issuing Platform that supports operations for EMI and DASP legal entities involved in the issuance and distribution of stablecoins.
The project involves building the BE platform that integrates with

• Blockchain interface for minting and burning stablecoins
• Digital asset custody platform
• Payment bank
• Customer service center

Current phase: PoC.
Goals of PoC:

• Prove that we can mint and burn coins for chosen networks
• Create basic web self-service
• Demonstrate how our support operations will be organized

We are looking for a developer who:

• Experience: Has more than 4 years of relevant experience in the IT industry.
• Java Expertise: Strong track record of working with:
  • Java core, OOP/OOD knowledge, design patterns
  • Spring framework, IOC, templates
  • ORM, Hibernate (Spring Data JPA)
  • SQL knowledge, any MySQL, PostgreSQL is a plus
  • Elastic Search, LogStash, Kibana (ELK)
  • Microservice architecture patterns knowledge
  • REST
• Java:
  • Perfect knowledge of Java Core 8+;
  • Good understanding of multhreding;
  • Design patterns in action;
• Spring framework:
  • Spring boot;
  • Spring Security;
  • Spring MVC;
  • Spring data Data JPA;
  • other Spring components;
• Database:
  • Experience with relational databases (MySQL, PostgreSQL, Oracle, etc)
  • Advanced knowledge of SQL quering;
  • Experience with Microservice architecture
• Other:
  • Good knowledge of Maven technology;
  • Good knowledge of Docker;
• Base understanding of Kubernetes, ElasticSearch, etc...
• Communication: Can speak and write in English at an upper-intermediate or higher level, and efficiently communicate ideas, design, and document artifacts concisely.
• Cultural Fit: Manifests our corporate values – trust, transparency, social responsibility, and a sense of beauty.

Will be a plus:

• Experience with the fintech domain
• General understanding of blockchain technology
• Experience with crypto technologies such as : Fireblocks, Kraken, etc.
• Knowledge of Temporal framework
• Experience with AWS S3, RabbitMQ
• Familiarity with CI/CD pipelines
• Experience with TDD & Feature Teams
• Knowledge of Python

As a Java Developer, you will:

• Develop High-Quality Code: Contribute to the implementation of the solution code with a strong focus on detail and adherence to Java development best practices.
• Write Reusable and Testable Code: Ensure code is functional, practical, and well-documented.
• Collaborate with Team Members and Clients: Work closely with other team members and directly communicate with the client’s management to implement designs.
• Proactively Address Technical Issues: Identify and resolve technical issues and risks that could impact the project’s schedule and the application environment’s integrity.
• Participate in Code Reviews: Engage in regular code reviews to maintain high code quality and share knowledge with the team.
• Stay Updated on Emerging Technologies: Keep up with industry trends and advancements to continuously improve the platform.

At Provectus, we're more than just a consultancy firm; we're pioneers in Artificial Intelligence, empowering businesses to achieve their goals through cutting-edge AI solutions. Renowned across industries, we lead the way in AI innovation, driven by sophisticated IT service management and a relentless commitment to technological advancement. With a reputation for excellence, Provectus is both a value driver and a trusted partner for our esteemed clients and dedicated employees alike.
Our client is a global streaming music service offering HiFi quality and unparalleled content. Delighting music enthusiasts worldwide, our exclusive catalog features professionally recorded live concerts from iconic artists like Metallica, Phish, Pearl Jam, and others.
Join Our Team as a Back-end Engineer!
Are you passionate about cutting-edge technology and innovation? Do you thrive in a dynamic, collaborative environment where your skills are valued and your ideas are heard? If so, we have an exciting opportunity for you to join our team as a Back-end Engineer at Provectus, a leading Artificial Intelligence consultancy and solutions provider.

Requirements:

• 5+ Years of Work Experience: We're looking for seasoned professionals with a proven track record in Back-end Engineering.
• Strong Knowledge of C# and ASP.NET Core: Your expertise in C# and ASP.NET Core will be instrumental in developing robust and scalable solutions.
• Experience with REST: Familiarity with RESTful architecture is essential for building efficient and interoperable APIs.
• Strong Knowledge of Entity Framework Core: You should be well-versed in Entity Framework Core for seamless data access and manipulation.
• Good Understanding of Microservice Approach: An understanding of microservices architecture will be advantageous for designing and implementing modular, scalable systems.
• Knowledge of SQL Server: Proficiency in SQL Server is necessary for managing and querying databases effectively.
• Experience with Azure Services: Hands-on experience with Azure services will be beneficial for deploying and managing cloud-based applications.
• Experience with JS/TS, React: Any experience with JavaScript/TypeScript and React will be a valuable addition to our tech stack.
• English Proficiency: Strong communication skills in English, at least at an upper-intermediate level, are a must.

Would be a plus:

• DevOps Skills: Experience with DevOps practices including scripting, pipelines, and Azure templates will be highly advantageous.
• Experience with Payments Services: Familiarity with payment services such as Stripe, Apple, and Google Play would be a significant asset.

Responsibilities:

• New Features Implementation: You will be responsible for implementing new features and functionalities to enhance our product offering.
• Rewriting the Product with .NET Core: You will contribute to the migration and modernization efforts, leveraging the power of .NET Core.
• Code Quality Processes: Executing standard code quality processes including merge requests and other best practices to ensure high-quality codebase.
• Collaboration and Meetings: Participating in meetings with partners and collaborating closely with the core team to drive project success.
• Proactivity & Self-Organization: Demonstrating proactive behavior and self-organization to meet project deadlines and objectives efficiently.
• Some front-end development. You might be responsible for creating user-friendly interfaces using JS/TS and modern front-end frameworks and libraries

Technologies:

• .NET Core
• JS, TS
• Azure
• REST
• OAuth 2.0
• SQL
• Microservices

ELEKS Software Engineering and Development Office is looking for a Senior Python Developer in Poland or Ukraine.

About project

The client is based in the US and is developing a data management portal to enhance user engagement. This platform will provide a centralized space where customers can define data sources, specify necessary data manipulations, and obtain desired results.

Requirements

• 7-8+ years of Python experience
• Strong experience with Django / Flask / FastAPI / Starlette
• Database knowledge: MySQL / PostgreSQL / Snowflake
• Kubernetes knowledge is a great plus
• Nice to have experience with containerization: Docker
• At least an Upper-Intermediate level of English

Responsibilities

• Design, develop, and maintain reliable software in line with technical requirements, focusing on performance and availability
• Analyze requirements, review designs, and estimate user stories following project methodology (Agile, Waterfall, etc).
• Proactively propose code refactoring and optimization improvements according to the best software development practices and coding standards
• Help maintain and improve high-quality standards within the developer community by sharing knowledge, conducting tech talks, and participating in the internal promotion verification process
• Stay up-to-date with modern technology and obtain professional certifications
• Support less experienced developers by providing training, distributing, and monitoring tasks

Plarium is an international developer of award-winning mobile and desktop games. More than 1300 of our specialists work remotely or at offices in Israel, Ukraine, and Poland.
The Kyiv studio is looking for a C# Developer to contribute to the development of our casual farm-crafting game actively.
You can work remotely from anywhere in Ukraine.

Responsibilities

• Develop game logic, including writing and maintaining unit and integration tests
• Optimize algorithms to improve performance
• Develop and maintain existing project functionality
• Support existing services and utilities

What we expect

• +3 years of experience in a similar role
• Strong knowledge of C#, .NET, including data structures, LINQ, and garbage collection
• Proficiency in ASP.NET Core (HTML, CSS, JS)
• Experience developing asynchronous and multithreaded systems
• Hands-on experience with MongoDB, Redis, RabbitMQ
• Understanding of scalable and multithreaded solutions development
• Knowledge of client-server application architecture, including experience with HTTP, HTTPS, TCP/IP, UDP, gRPC
• Ability to write unit and integration tests
• Experience working with Kubernetes, GC

Desired

• Experience with Redis, dotMemory, dotTrace, Grafana, Prometheus
• Familiarity with Git, Jira, and TeamCity

Our mission at Geniusee is to help businesses thrive through tech partnership and strengthen the engineering community by sharing knowledge and creating opportunities. Our values are Continuous Growth, Team Synergy, Taking Responsibility, Conscious Openness and Result Driven. We offer a safe, inclusive and productive environment for all team members, and we’re always open to feedback. If you want to work from home or work in the city center of Kyiv, great – apply right now.

Requirements

• 7+ years of software engineering experience;
• 5+ years specifically in development;
• 3+ years architecting large-scale distributed systems;
• Strong experience with distributed stream processing frameworks similar to Apache Storm;
• Proven track record designing and implementing large-scale data processing architectures;
• Experience with pub-sub messaging systems and loosely coupled architectures;
• Working knowledge of SQL and NoSQL databases;
• Demonstrated understanding of DevOps practices, containerization, and CI/CD pipelines;
• Ability to create and defend complex design decisions with clear articulation of trade-offs;
• Experience optimizing system performance, memory usage, and disk access;
• Knowledge of caching strategies to improve response times and reduce costs.

What you will do

• Design and architect scalable, high-performance search components with focus on system trade-offs;
• Implement real-time data processing pipelines using and distributed streaming technologies;
• Collaborate with stakeholders to align technical solutions with business requirements;
• Contribute to system reliability, efficiency, and performance optimization.