Senior Backend Engineer - Trading Platform (Performance, Security, Reliabil at Freedx

, , Armenia -

Full Time

Start Date

Immediate

Expiry Date

10 Feb, 26

Salary

0.0

Posted On

12 Nov, 25

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Backend Development, C#, Concurrent Systems, Event-Driven Architecture, Messaging, API Security, Data Integrity, Auditability, Profiling, Benchmarking, Performance Tuning, FIX, WebSocket, REST APIs, Cloud-Native Deployments, K8s, AWS

Industry

Financial Services

Description

Who We Are FreedX is a newly established cryptocurrency exchange dedicated to providing a seamless, secure, and innovative trading experience. Our team comprises experienced professionals from the crypto, ﬁnance, and technology sectors, all passionate about driving the future of digital ﬁnance. At FreedX, we are committed to creating a platform that empowers our clients with the freedom to manage their digital assets conﬁdently and eﬃciently. Our Vision: At FreedX, our vision is to be the most trusted and reliable cryptocurrency exchange, oﬀering unparalleled freedom and scalability to our clients. We aim to build a platform where users can trade and manage their assets with complete peace of mind, knowing that their security and reliability are our top priorities. We strive to continuously innovate and adapt to the evolving needs of the crypto market, ensuring that our clients have access to the best tools and services to achieve their ﬁnancial goals. Join us on our journey to redeﬁne the standards of digital asset trading and experience the freedom, reliability, and scalability that FreedX has to oﬀer. About the Role We’re looking for a senior backend engineer to evolve our trading platform — the backbone powering everything from API order intake to position management and clearing. You'll focus on core quality attributes: high-throughput processing, low-latency response times, robust fault tolerance, and tight security controls across the stack. Responsibilities Design and develop scalable backend services for order routing, risk checks, balance tracking Optimize performance for low-latency API and real-time data feeds Ensure platform resilience under load using circuit breakers, graceful degradation, and auto-recovery Implement and monitor security controls: API key access, rate-limits, trade validation Write unit/integration tests with high coverage and measurable SLAs Participate in incident response and postmortems to continuously improve system reliability 5+ years of backend development (preferably in C#) Strong knowledge of concurrent systems, event-driven architecture, and messaging (e.g., Kafka, NATS) Experience designing systems with 99.95%+ uptime, ideally in financial or high-throughput environments Solid grasp of API security, data integrity, and auditability Proven skills in profiling, benchmarking, and performance tuning Nice to Have Experience with FIX, WebSocket, and REST trading APIs Familiarity with cloud-native deployments (K8s, Istio, AWS/GCP) Contributions to high-stakes production systems in fintech or crypto What We Offer: Competitive salary Flexible work schedule, remote /hyrbid work opportunity. Opportunity for professional development, participation to industry events. Freedx is an equal opportunity employer. We stand for an open and inclusive work environment that fosters the well-being of everyone. We embrace and encourage differences in age, color, disability, ethnicity, family or marital status, gender identity or expression, language, national origin, physical and mental ability, race, religion, sexual orientation, socio-economic status, veteran status, and other characteristics that make our people unique.

Responsibilities

Design and develop scalable backend services for order routing, risk checks, and balance tracking. Optimize performance for low-latency API and real-time data feeds while ensuring platform resilience under load.