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Backend Developer Java/SQL

Remote:

Full Remote

Contract:

Full time

Experience:

Senior (5-10 years)

Work from:

Bulgaria, Indonesia

Offer summary

Qualifications:

Expertise in Core Java (J2SE), Knowledge of SQL and NoSQL databases, Experience with distributed systems, Proficiency in performance profiling, English proficiency B1+, Russian preferred.

Key responsabilities:

Develop and maintain high-performance components
Design and implement low-latency systems
Collaborate on API development and optimization
Profile system components and identify bottlenecks
Conduct code reviews and improve processes

NATEK SME https://natek.eu/

501 - 1000 Employees

See more NATEK offers

Job description

Job Description

We are seeking a Senior Java Developer to contribute to the development of high- performance distributed exchange systems. This system must be capable of processing tens of thousands of trade requests per second with microsecond-level processing time per order. Key functionalities include order processing, risk management, integration with third-party systems, event storage and reporting, as well as market data publishing. Given the performance-critical nature of the project, database usage, transaction managers, and garbage collection are kept to a minimum. The project operates in a Kanban environment with a small, collaborative team, using Git and a mandatory code review process. The role requires a focus on well-designed, maintainable code, with both unit and integration testing being crucial parts of the development process.

Your Responsibilities

Develop and maintain high-performance components for distributed exchange systems in Core Java.
Design and implement low-latency systems, minimizing garbage production and eliminating unnecessary memory overhead.
Collaborate with the team on the development of APIs, ensuring performance optimization.
Profile and benchmark system components, analyze logs and dumps to identify performance bottlenecks.
Contribute to the design and maintenance of RESTful APIs and network protocols.
Investigate and apply mechanical sympathy principles to optimize performance.
Work on distributed system architecture, considering CAP theorem, consensus protocols, event sourcing, and replication.
Perform code reviews and contribute to the continuous improvement of team processes.

Our Requirements

Tech Stack:

Core Java (J2SE)
SQL and NoSQL databases
Distributed systems
RESTful APIs

Must Have:

Excellent knowledge of data structures and algorithms.
Strong expertise in Core Java (J2SE), including multithreading, network programming, shared memory, bits, and files.
Experience in low-level Java development with a focus on high performance and low latency.
Proficiency in performance profiling, writing benchmarks, and analyzing system behavior in real-world conditions.
Experience or strong interest in distributed system design (CAP theorem, event sourcing, replication, etc.).
Ability to design and implement REST APIs.
English language proficiency (B1 and above), with fluent Russian being a plus.

Benefits

Internal Mobility Program – enjoy many opportunities for career growth, job rotations, diversity of projects & technologies
Referral Program – enjoy cooperation with your colleagues and get a bonus!
5/10 Years NATEK Club – we offer long-term cooperation and celebrate each fifth-year cooperation anniversary with gifts
NATEK CSR Events & team buildings – enjoy our values: accountability, partnership and expertise and #workITwithus
Cafeteria
Medical Healthcare
Multisport Club Card
Technical and Personal training
Language courses

Additionally only for CoW: