Backend Engineer

• Build, refine, and maintain core features across the full stack, ensuring a polished, high-performance user experience;
• Develop and optimize both the company's main application and internal Admin Interfaces (including user management and billing systems);
• Implement high-fidelity UI/UX, ensuring pixel-perfect execution of product designs down to the smallest detail;
• Work closely with Product Managers and Designers, translating Figma designs into seamless production code;
• Collaborate closely with an additional developer and the QA team to ensure smooth integration, high code quality, and flawless deployment;
• Design and maintain significant, sensitive, and secure back-end logic and infrastructure;
• Take responsibility for maintaining and updating the company’s marketing website, built on WordPress;
• Leverage AI tools effectively to accelerate the development lifecycle and optimize delivery speed without compromising quality.

Full-Stack Developer, Python/Java/React

• Design, build, and maintain Python services for sports data ingestion, transformation, and distribution
• Integrate with third-party sports data providers and handle differences between provider models, formats, and update patterns
• Build reliable pipelines for near real-time and batch data processing
• Improve data validation, reconciliation, monitoring, alerting, and replay tooling
• Work on domain models for events, competitions, participants, markets, odds, scores, and related sports entities
• Investigate production issues, trace data problems, and improve system observability
• Collaborate with backend, product, trading, QA, and platform teams to deliver dependable data flows
• Contribute to architecture decisions, code reviews, technical standards, and mentoring within the squad

Senior Python Engineer, DataFeed Team

• Collaborate closely with the customer to understand functional and non-functional software requirements for the system
• Analyze functional and non-functional requirements, prepare the design of the system according to these requirements, and monitor solutions to match them afterward
• Guide and assist the development team and provide them with architectural blueprints to follow
• Communicate and collaborate across teams to define optimal technical solutions
• Explore a range of technology and design possibilities and alternatives to improve system implementation

Software Architect, .NET – B2B or Standard Contract

• Design, develop, and maintain high-quality .NET applications
• Collaborate with cross-functional teams to define, design, and ship new features
• Write clean, scalable, and testable code following best practices
• Optimize application performance, security, and scalability
• Troubleshoot, debug, and resolve technical issues
• Stay current with emerging technologies and propose improvements to existing solutions

.Net Developer

• Design and build robust backend services that orchestrate Knowledge Graphs, LLMs, and custom ML models
• Implement scalable APIs and integration layers that connect AI components with enterprise systems
• Develop retrieval and context architectures, including RAG and GraphRAG patterns
• Contribute to the design of distributed, production-grade systems for demanding enterprise workloads
• Help shape how Knowledge Graphs interplay with modern AI in real-world deployments
• Collaborate with ML engineers, data engineers, and solution architects to deliver end-to-end functionality
• Collaborate with technical and business stakeholders to solve complex information challenges
• Explore and adopt modern AI, NLP, and backend engineering technologies.

Java Backend Engineer – AI Platforms

• Working in an Agile environment, where team work is always recognized and appreciated.
• Design, develop and unit test solutions of any size or complexity
• Produce clean code
• Become part of a fast-moving team where quality always comes first
• Understand all of Fourth’s products in detail, how they are integrated with each other, and their business value
• Diagnose defects and provide effective solutions.
• Provide development estimates, be a part of planning sessions
• Understand and support the release management process

Junior .NET Developer

• Provide deep technical expertise in backend development, code reviews, and architectural discussions, ensuring best practices are followed
• Design, develop, test, and deploy backend software solutions using Node.js and Java, adhering to high-quality standards
• Architect and optimize relational database schemas, write efficient queries, and ensure data integrity and performance
• Develop and maintain components for real-time communication, including SIP signaling and RTP streaming
• Explore and implement solutions for audio/video media processing and integration within the contact center environment
• Contribute to the development of contact center-specific features and integrations, understanding the nuances of the domain
• Identify and address performance bottlenecks, ensuring the platform can scale to meet growing demands
• Diagnose and resolve complex production issues, providing timely and effective solutions
• Work closely with product managers, architects, QA engineers, and other stakeholders to deliver high-quality software

Senior Backend Software Engineer, Node.js, Java

• Design, develop, and maintain enterprise banking applications using Java technologies
• Participate in the full software development lifecycle within an Agile environment
• Manage and administer cloud-native infrastructure, including OpenShift environments and CI/CD platforms
• Provide technical consulting and expertise for cloud infrastructure, Kubernetes-based platforms, and Spring Boot REST applications
• Define and support cloud architecture and infrastructure best practices
• Collaborate with development, operations, and business teams to ensure scalable, secure, and reliable solutions
• Monitor application and infrastructure performance, troubleshoot issues, and implement improvements
• Contribute to architectural discussions and technical decision-making

Senior Java Engineer

• Design and build robust backend components using Java and Spring Boot
• Conduct structured code reviews focused on quality
• Collaborate on development standards
• Manage technical debt
• Participate in hiring and technical interviews
• Maintain documentation

Senior Java Engineer, Python Experience

• Develop, maintain, and improve Ruby on Rails applications supporting business-critical processes and workflows
• Work primarily within monolithic application architectures while contributing to modernization and architectural improvements
• Implement backend features, integrations, and business logic using Ruby and Ruby on Rails
• Collaborate with frontend developers to support integrated user experiences and maintain legacy frontend components where required
• Participate in the implementation of Event-Driven Design and Domain-Driven Design (DDD) principles within evolving application architectures
• Write and maintain comprehensive unit and integration tests using RSpec and/or Minitest
• Work closely with Product Owners, QA engineers, and client stakeholders to refine and implement business requirements
• Manage deployments and support delivery processes across multiple environments, including legacy on-premises infrastructure and containerized platforms
• Contribute to CI/CD processes, automation, and operational improvements using modern DevOps practices and tooling
• Support troubleshooting, debugging, performance optimization, and production stability activities
• Ensure high code quality through code reviews, testing, refactoring, and continuous improvement initiatives.

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