Senior Backend Developer (Python & English)

Top 3 reasons to join us

• Premium Healthcare package insurance
• 13th month salary, Performance bonus
• 16 days annual leave

Job description

• Architect and build high-performance, low-latency backend services for trade capture execution, real-time analytics, and financial market data processing and distribution.
• Design, build, and maintain scalable Microservices, low-latency protocols, and high-throughput APIs.
• Engineer robust pipelines for real-time data ingestion, transformation, and distribution across large-scale, high-concurrency financial datasets.
• Continually profile and optimize distributed cloud-native services for minimal latency, maximum throughput, fault tolerance, and high availability.
• Write comprehensive unit, integration, and stress tests to ensure strict code quality, zero-data-loss execution, and long-term system robustness.
• Partner with cloud, DevOps, and frontend engineering teams to deliver seamless integration, backed by structured logging, tracing, and observability tooling.
• Maintain clear, thorough technical documentation, system specs, and runbooks to facilitate knowledge sharing and streamline system debugging.

Your skills and experience

• Strong proficiency in Python combined with proven backend experience in compiled/systems languages. Hands-on experience with Rust is highly valued; however, candidates with strong backgrounds in lower-level or highly concurrent systems (e.g., C++, Go) and a proven track record of rapidly self-learning Rust are strongly encouraged to apply.
• Proven experience designing, building, and scaling high-performance backend systems or distributed cloud architectures.
• Deep understanding of REST, gRPC, and WebSockets for real-time, low-overhead communication.
• Hands-on experience architecting or working with event-driven architectures and streaming platforms (e.g., Apache Kafka, NATS, Redpanda).
• Strong command of Linux environments, operating system internals, performance profiling/tuning, containerization (Docker), and cloud environments (Kubernetes experience preferred).
• Strong commitment to system documentation, clean code practices, structured application logging, and telemetry implementation.

Preferred Qualifications

• 2+ years of production experience writing idiomatic Rust (focusing on memory management without GC, async runtime models, tokio, and low-latency system design) is a major plus.
• Domain experience in capital markets technology, trade processing, order management systems (OMS/EMS), or market data delivery platforms.
• Demonstrated expertise in multi-threading, lock-free data structures, memory management optimization, and microsecond-level latency tuning.
• Familiarity with real-time data pipelines and modern database architectures (PostgreSQL, time-series databases like TimescaleDB/InfluxDB, or distributed NoSQL stores).

Why you'll love working here

• Competitive salary and benefits including Premium Healthcare package insurance

• 13th month salary, Performance bonus

• 16 days annual leave

• Comprehensive Training Courses (Languages, Technical and Soft-skill)

• Language Certificate allowance (TOIEC and Japanese)

• Lunar New Year gifts

• Lunch and bus/ parking allowance

• Fun team activities and outings

• Sponsored happy hour and sport clubs

• Comfortable work space and friendly colleagues