Role Description We are looking for a Senior Backend Engineer with a strong focus on integrations, capable of designing, implementing, and maintaining robust, scalable, and secure backend systems, primarily using Node.js, APIs, and event-driven architectures. This is not a low-code configuration role. It requires deep understanding of backend engineering, protocols, concurrency, and security. - Work on complex backend systems and real-world integrations (SaaS, APIs, ERPs) - Solve challenges around scalability, reliability, and distributed systems - Collaborate with a highly senior team with strong technical ownership - Work directly with U.S.-based clients and products with real impact What You’ll Do - Design and build scalable backend services using Node.js - Develop and maintain robust, secure APIs - Work on integrations between SaaS platforms, ERPs, and internal systems - Implement event-driven flows (webhooks, retries, idempotency) - Contribute to authentication and authorization flows (OAuth2, JWT, API keys) - Identify and solve performance, concurrency, and scalability challenges - Improve observability, logging, and error handling in production - Participate in technical decisions and architecture discussions Qualifications - 4+ years developing backend systems in production, with experience in integrations and distributed architectures - Strong experience with Node.js in production environments - Experience building and working with APIs - Familiarity with authentication and authorization mechanisms (OAuth2, JWT or similar) - Experience integrating with external systems or third-party services - Solid understanding of backend fundamentals (performance, scalability, reliability) - Advanced English (you’ll work with U.S. clients) Nice to Have (Not Required) - Experience with event-driven architectures or webhooks - Experience with iPaaS tools (Mulesoft, Workato, Boomi, etc.) - Experience integrating with ERPs (NetSuite, SAP, Business Central) - Experience with high-concurrency systems - Familiarity with CI/CD practices Benefits - Remote-first culture - High ownership and autonomy - Focus on clean, maintainable, production-grade code - Collaborative, senior-level environment - 🚀 Work with global brands and disruptive startups. - 🏡 Remote work / Home office. - 📍 If a hybrid or on-site model is required, you will be informed from the first session. - ⏳ Work schedule aligned with the assigned project/team. - 📅 Monday to Friday schedule. - ⚖️ Legal benefits (Applicable for Mexico). - 🎉 Day off on your birthday. - 🏥 Private health insurance (Applicable for Mexico). - 🛡️ Life insurance (Applicable for Mexico). - 🌎 Multicultural teams. - 🎓 Access to courses and certifications. - 📢 Meetups with industry experts and top universities. - 📡 Virtual networking events and interest groups. - 📢 English classes. - 🏆 Opportunities within our different business lines. - 🏅 Proudly certified as a Great Place to Work.

• Develop scalable solutions following software engineering best practices. • Participate in the full development lifecycle, from analysis to deployment. • Work autonomously, taking responsibility for end-to-end deliveries. • Communicate risks, dependencies, and activity status clearly and objectively. • Ensure quality through testing, documentation, and code review. • Collaborate with multidisciplinary teams across product, architecture, and engineering. • Use modern development tools and AI resources to increase productivity.

Role Description The role is about: - Dual-Track Maintenance: Support and extend the existing Perl-based payment gateway debugging production issues and adding features while the migration is ongoing. - Modernization: Design, develop, and maintain modern server-side components in Python, ensuring high performance and scalability. - Integrations: Integrate third-party APIs and external payment services into both legacy and modern platform layers. - Agile Collaboration: Maintain clean and strong English communication to effectively collaborate with multiple stakeholders across departments working in agile sprints. - Product Thinking: Go beyond the "what" and "how" of the code bring a product-focused mindset to understand the business logic and user impact of what you build. - Engineering Standards: Participate in code reviews, uphold high code quality standards, and contribute to a culture of continuous improvement. - Infrastructure: Work closely with DevOps on CI/CD pipelines, containerization, and cloud deployments. Qualifications - Python Expertise: 5+ years of backend engineering experience with strong Python mastery (AsyncIO and FastAPI preferred). - Legacy Flexibility: Experience with Perl (or a genuine eagerness to learn and work within Perl production code). We value polyglot engineers who can read and refactor legacy code. - API Mastery: Solid experience integrating third-party APIs and a deep understanding of webhooks, callbacks, and retry policies. - Tech Stack: Experience with CI/CD pipelines (GitLab preferred), Docker containerization, and familiarity with AWS (Lambda, cloud services). - Architecture: Exposure to event-driven architectures (Kafka, message queues, etc.). - Clean & Intentional Code: We value deep engineering logic over AI-generated snippets. You should be a "clean code" advocate who can explain the reasoning behind every line you ship. - Curiosity for Product: You care about the "why" behind a feature. You are interested in how a product works for the end-user and the business. - English Proficiency: Strong English communication skills—both written and verbal—to collaborate across multi-functional teams. Requirements - Location: Remote from Portugal / Ukraine (Contractor arrangement) - Reporting to: Technical Lead Hiring Process - Step 1: Initial Interview – A 30–40 minute online interview with a Talent Acquisition Partner where we explore your experience, motivations, and overall fit for our modernization culture. - Step 2: Live Technical Assessment Interview – A 90-minute live coding challenge and system design discussion with our field technical experts. - Step 3: Final Discussion – A 30-minute conversation with our CTO, CPO, and TA Partner to discuss behavioral traits, background, and clarify the domain scope. Benefits - Grow with Us: Annual Learning Budget for professional development (eligible after probation)—because your growth is our growth. - Celebrate Together: We bring colleagues from all offices together for unforgettable company celebrations. - Global Collaboration & Events: Opportunities to participate in international company events and initiatives, connecting with colleagues from all regions and contributing to a truly global community.

• Lead technical excellence while architecting and delivering scalable Java solutions that power our next-generation gaming platform • Design and implement complex, scalable system architectures while mentoring team members and driving technical excellence • Lead code reviews and establish best practices to ensure high-quality deliverables across the engineering team • Optimize database performance and design robust data solutions, particularly with PostgreSQL and query optimization • Architect and maintain messaging systems using Kafka or similar technologies to handle high-volume data streams • Troubleshoot and resolve complex production issues, taking full ownership of system reliability and performance • Facilitate technical discussions and foster collaborative problem-solving across cross-functional teams