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Backend Engineer

Devexperts · Porto, Porto District, Portugal · On-site

Posted Jul 28, 2026

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We are looking for a Backend Engineer to join the team.     Our current project involves developing one of the leading trading platforms in the USA, serving a user base of over 200,000 online users daily across desktops, mobile devices, and the web. The system is capable of processing over 1 million requests per second across its distributed infrastructure.  The responsibilities of the platform's backend services include handling all business processes related to trading, such as order issuance, validation, routing, execution, option price calculation, and reconciliation. We prioritize high performance, low latency, and fault tolerance in our day-to-day tasks. We ensure code quality by performing careful code reviews and various types of testing.   As a Backend Engineer, you’ll build and own backend services, infrastructure, and data systems. You’ll solve complex scalability challenges while gaining deep expertise in U.S. financial systems and making a direct impact on the products used by millions.  What we expect from candidates:   3+ years of backend development experience,   Strong proficiency in Go or Python,  Solid understanding of system design principles,  Experience with Kafka (or similar streaming platforms),  Proven experience delivering large technical projects while collaborating with cross-functional teams,  Strong focus on maintaining high code quality and participating in thorough code review processes,  Experience working in the capital/trading market, B2+ English to be able to communicate with multicultural teams and a US customer. Considered a plus:    Familiarity with PostgreSQL, Redis, DynamoDB, Kubernetes, AWS (or similar cloud platforms),  Experience working in high-load systems,  Hands-on experience in concurrent programming and understanding of thread synchronization approaches.  Our interview process typically includes:  Recruiter screening  CoderPad assessment System design interview  Final call  Offer  Background check  Work Regime Flexibility benefits:  Possibility of hybrid/remote work mode, Flexible working hours. Health and recreation benefits:  Fully paid additional wellness days (3 unwell days per year), Medical insurance for the employees and children, Reimbursement of fitness / Urban Sports Club Membership, Meal allowance & Flexpay System (Coverflex Card), Facility benefits:  Parking spaces, Free drinks and snacks. Community benefits:   Free admission to corporate external events, Possibility of joining conferences and professional fairs, Personal branding development support. Professional training benefits:   Local language courses for foreign employees, Unlimited access to self-learning…