AgileEngine - Backend Engineer (Senior) ID55642

Back-End Developer is needed in Campinas, Brazil.

Client: AgileEngine

Location: Campinas, SP, br

Contract: Freelance

Job Description

As a Senior Backend Engineer at AgileEngine, you will design and optimize high-performance, multi-threaded systems, transforming legacy workflows into scalable, thread-safe architectures. You will leverage deep expertise in C#, SQL, and AWS to drive concurrency improvements, enhance system throughput, and support large-scale data processing with technologies like Apache Spark. This role offers strong technical ownership and the opportunity to shape reliable, high-impact backend systems in complex environments.

Requirements

MUST HAVES

• 4+ years of experience as a software engineer;
• Expert-level proficiency in C# with experience in multi-threaded and parallel processing;
• Understanding of C++;
• Strong understanding of threading models, synchronization primitives, and concurrency debugging;
• Proven experience in performance tuning and application profiling for large-scale systems;
• Advanced proficiency in SQL;
• Proven experience deploying solutions on AWS;
• Strong problem-solving and debugging skills focused on scalability and reliability;
• Upper-intermediate English level.

NICE TO HAVES

• Hands-on experience with Apache Spark;
• Experience in re-engineering legacy systems into modern architectures;
• Familiarity with microservices design principles and cloud-native development patterns;
• Strong communication and collaboration skills with cross-functional teams.

Additional Information

AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries, ranking among leaders in application development and AI/ML. The company has a people-first culture that has earned multiple Best Place to Work awards. The role offers perks such as professional growth opportunities, competitive compensation, exciting projects, and a flexible schedule with remote and office options.