Back End Developer

Celesta; Lisboa; Híbrido; EUR 45 000 - 65 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Lunch allowance

Transport allowance

Health & dental insurance

Wellness reimbursement

25 days vacation

Resumo da oferta

Celesta, part of La Royale Group, is a fast-growing iGaming development company based in Lisbon, delivering next-generation online betting experiences. We seek a Backend Developer to lead backend solutions for our sportsbook web apps, building scalable RESTful services and microservices with PHP 8 and Symfony.

You will collaborate across design, QA and product teams, and occasionally work on-site in Carnaxide with up to 8 days remote.

Qualificações

• 3+ years of software development experience.
• Proficient in PHP 8 and Symfony.
• Ability to debug complex PHP apps (Xdebug, Profiler).
• Knowledge of OOP and design patterns.
• Experience with RESTful APIs and microservices.

Responsabilidades

• Develop and maintain backend for sportsbook web apps.
• Build reusable code, libraries and services for future use.
• Implement security and data protection best practices.
• Collaborate with designers, QA and product teams.
• Leverage AI-assisted tools to improve productivity while reviewing outputs.

Conhecimentos

PHP8

Symfony

OOP

Design patterns

RESTful APIs

English proficiency

AI-assisted tools

Debugging

Ferramentas

Docker

RabbitMQ

Elasticsearch

WebSocket

Kubernetes

AWS

GCP

Descrição da oferta de emprego

Celesta, part of La Royale Group, is a fast-growing iGaming development company dedicated to building next-generation online sports betting and casino experiences. Based in Lisbon, our multidisciplinary team is committed to quality, innovation, and regulatory excellence, creating solutions that engage players and stand out in the highly competitive i-gaming regulated market.

We are now seeking a Backend Developer to join our engineering team. In this role, you will spearhead the development of our sportsbook web applications, delivering intuitive and seamless cross-platform experiences. From live betting interfaces to personalized dashboards, you will guide a team that ensures every feature is fast, reliable, and user-friendly.

This position reports directly to the Team Leader/ VPoE and works closely with designers, backend, QA, and product teams.

The role should be based at the office in the Carnaxide area (up to 8 days per month remotely), and the first month is fully on-site.

• Collaborate with other team members to establish objectives and design functional, scalable and maintainable backend solutions that enhance the user experience.
• Develop ideas for new programs, products and features by monitoring industry developments, emerging technologies and AI advancements.
• Build reusable code, libraries and services for future use.
• Develop and maintain RESTful APIs and backend services.
• Write high-performance, secure and scalable code.
• Implement security, data protection and best software engineering practices.
• Liaise with developers, designers and system administrators to identify and implement new features.
• Leverage AI-assisted development tools (e.g. GitHub Copilot, ChatGPT, Claude or similar) to improve productivity, accelerate development, assist with debugging, documentation and code generation, while ensuring the quality, security and maintainability of all deliverables.
• Evaluate, validate and critically review AI-generated code and technical solutions, ensuring compliance with coding standards, security requirements and business needs.
• Continuously evaluate and adopt emerging technologies, including AI-powered development practices, to improve engineering efficiency and software quality.

Skills/knowledge required for the position:

• At least 3 years experience in software development
• Good level of programming skills in >=PHP8
• Ability to debug complex PHP applications (Xdebug, Profiler, and others)
• Development following different coding principles (SOLID, KISS, ACID, etc)
• Strong knowledge in developing with latest Symfony versions
• Knowledge of Object-Oriented Programming and Design Patterns
• Experience using AI-assisted software development tools (such as GitHub Copilot, ChatGPT, Claude, Cursor, Windsurf or similar) to support coding, debugging, testing and documentation.
• Ability to critically assess, validate and refine AI-generated outputs rather than relying on them without technical review.
• Knowledge of RabbitMQ, Docker, ElasticSearch is a plus
• Knowledge of Websocket / Socket.IO is a plus
• Experience with Web Services, Microservices
• Experience with AWS, GCP, Kubernetes is a plus
• Experience with Go would be a plus
• Proficient level of English

What We Offer

• Competitive salary & full benefits
• Career growth in a fast-growing iGaming company
• Opportunity to shape a high-impact sports betting product
• Hybrid work model as per Company’s Policy
• Perks: lunch & transport allowance as per Company’s Policy
• 25 days paid vacation per year
• Health & dental insurance + wellness reimbursement (after 6 months work)
• A collaborative culture where your input matters