ExpoPlatform

About Us 

ExpoPlatform is a UK-based company founded in 2013, delivering advanced technology for online, hybrid, and in-person events across 30+ countries. Our platform provides end-to-end solutions for event organizers, including registration, attendee management, event websites, and networking tools.

About the Role

We are looking for a QA Engineer to join our Data Science team. You will be responsible for ensuring high-quality deliverables by executing comprehensive testing strategies and collaborating closely with developers, product owners, and designers.

Role Responsibilities:

• Analyze project documentation to understand business and technical requirements
• Perform functional and non-functional testing (web, mobile, agentic services)
• Test API endpoints and data flows within services managed by DS team
• Test frontend and backend processes during interactions with DS services
• Validate prompt responses, agent workflows, and conversation logic
• Identify inconsistencies, hallucinations, or undesired behaviors in LLM outputs
• Collaborate with ML engineers, product managers, and UX designers to improve AI reliability and user satisfaction.
• Conduct performance and latency testing for AI model inference and responses.
• Conduct product regression and release testing
• Identify, document, and track software bugs
• Provide clear reporting on testing progress and results
• Participate in planning, decomposition, and refinement
• Stay up-to-date with LLM capabilities, limitations, benchmarking, quality metrics and testing tools

Required Skills & Experience:

• 3+ years of experience in functional and non-functional testing
• Hands-on experience testing AI systems, chatbots, or LLM-based tools
• Familiarity with prompt engineering and model evaluation techniques
• Solid understanding of QA methodologies, tools, and processes
• Experience in API testing and using REST client tools
• Familiarity with HTML, XML, SQL, and web technologies
• Knowledge of Jira, Confluence, TestRail, or similar tools
• Advanced English level (C1)

Would a Plus:

• Languages: French, German, Spanish
• Knowledge of programming basics and automation
• Experience with test automation frameworks (Pytest, Selenium)
• Experience with AWS, GIT, and test plans
• Understanding of CI/CD pipelines

What We Offer

• Career growth with an international team.
• Competitive salary and financial stability.
• Flexible working hours (Mon-Fri, 8 hours).
• Free English courses and a budget for education

Senior PHP Developer

Full-time | Remote

About Us

ExpoPlatform is a UK-based tech company founded in 2013, delivering cutting-edge solutions for online, hybrid, and in-person events in over 30 countries. Our platform powers registration, attendee engagement, event websites, networking tools, and more — offering complete digital infrastructure for exhibitions and conferences.

Your Role

We’re looking for an experienced Senior PHP Developer to take ownership of core backend components in a fast-paced, product-led environment. You’ll help shape the architecture, scale the platform, and mentor junior team members. This role requires strong technical expertise, autonomy, and excellent communication skills.

Key Responsibilities

• Design, develop, and maintain scalable backend modules for our event-tech platform
• Build and document robust internal and external RESTful APIs
• Participate in system architecture design, refactoring, and performance tuning
• Collaborate with Staff Engineers to ensure system-wide technical consistency
• Work with Engineering Managers to align development with product and business goals
• Take part in cross-team initiatives to raise engineering standards and share best practices
• Translate business requirements into reliable, scalable solutions
• Write clean, maintainable, and well-tested code
• Lead by example, mentoring mid-level and junior developers
• Ensure backend components meet security, performance, and reliability benchmarks

What We’re Looking For

• 7+ years of PHP backend development experience
• Proven senior-level background (e.g., Senior Developer, Tech Lead, or Architect)
• Strong command of Laravel, Symfony, or Phalcon
• Deep understanding of OOP, design patterns, and software architecture
• Experience with PostgreSQL, including performance optimization
• Proficient with Git in collaborative team settings
• Applies modern development principles: SOLID, DRY, KISS, DDD
• Confident writing tests (e.g., PHPUnit) and maintaining testable code
• Hands-on with CI/CD pipelines (GitLab CI, Jenkins, GitHub Actions)
• Able to model and explain system architecture (e.g., C4 diagrams)
• Experience in transitioning from monolithic to service-oriented architecture (SOA/microservices)
• Familiar with modern architecture styles: Clean, Hexagonal, Onion, DDD
• Up to date with tech trends, including AI-assisted coding tools and practices
• Advanced or native-level English, with the ability to clearly communicate technical concepts to both technical and non-technical stakeholders, including external partners and clients

Nice to Have

• Experience with cloud services (e.g., AWS: EC2, S3, RDS, Lambda)
• Familiarity with message queues (RabbitMQ, SQS)
• Basic frontend skills (JavaScript, HTML, CSS, Vue.js, React)

What We Offer

• A chance to build and scale infrastructure for a globally used event-tech platform
• A collaborative, international team in a fast-growing company
• Competitive salary with performance-based incentives
• Flexible work hours and fully remote setup
• Budget for professional development and learning