Senior Software Developer - (C++ and/or Java)

Swift Transportation•Manassas, VA

About The Position

The Senior Software Developer (C++/Java) plays a key role in designing, developing, optimizing, and maintaining high‑performance financial applications and distributed systems used within modern FINTECH environments. The role requires strong software engineering expertise in C++ and/or Java, deep understanding of SQL databases (Oracle preferred), and hands‑on experience with communication protocols such as gRPC and RESTful APIs. Swift is unable to sponsor an employment authorization for this position now or in the future.

Requirements

Bachelor’s Degree in Computer Science, Computer Engineering, Information Systems or related field
5–10 years hands-on experience in C++ (C++11/14/17) and/or Java (11/17+)
Strong object‑oriented design, data structures, algorithms and design patterns
Experience with multithreading, concurrency controls, memory management and high throughput applications
Proficient in Oracle SQL, PL/SQL, functions, triggers, indexing and performance tuning. Experience designing scalable relational schemas
Hands-on experience with gRPC (Protocol Buffers), RESTful API’s, microservices frameworks
Understanding of message serialization, secure communication, and service orchestrations
Proficient in Red Hat Enterprise Linux (RHEL) environment
Knowledge of Linux tools, system services, package management and OS tuning
Understanding of fundamental networking concepts (TCP/IP, DNS, routing, firewalls, SSL/TLS)
Strong experience in Bash scripting
Strong analytical thinking, problem‑solving, and debugging ability
Excellent written and verbal communication skills suitable for technical and non-technical audiences
Ability to work in an Agile development environment
Self-driven, accountable, and capable of driving solutions end‑to‑end
Ability to mentor junior developers and contribute to team knowledge sharing

Nice To Haves

Python for automation, data processing or integration tasks
Exposure to FINTECH transaction systems, clearing/settlement platforms or financial messaging
Experience in performance engineering, low‑latency optimization or high‑frequency transaction environments
Knowledge of containerization (Docker, Podman), CI/CD systems (Jenkins, GitLab, Azure DevOps)

Responsibilities

Architect, design, and develop scalable, performant and fault‑tolerant FINTECH applications using C++ and/or Java
Implement high‑quality code adhering to secure coding standards, low‑latency design patterns and best engineering practices
Develop services and components that integrate via gRPC, REST API’s and internal messaging frameworks
Optimize application performance, memory usage and latency for real‑time transaction processing systems
Design and maintain database schemas, stored procedures, and SQL queries for Oracle or other enterprise‑grade RDBMS systems
Ensure efficient data access patterns, indexing strategy and query optimization
Work with large and high‑throughput datasets relevant to financial transaction flows
Deploy, configure, and troubleshoot applications running on RHEL-based systems
Monitor system health, tune OS/network parameters for high‑availability environments, and troubleshoot production incidents
Collaborate with infrastructure teams to ensure smooth deployment pipelines using CI/CD tools
Work with transport and application-layer networking concepts (TCP/IP, SSL/TLS, load balancing, service discovery)
Develop and maintain microservices and distributed components using gRPC and RESTful API’s
Ensure secure, compliant and efficient communication flows in financial transaction ecosystems
Build automation scripts, deployment tools, log parsers, and monitoring utilities using Bash and optionally Python
Create CI/CD improvements, automate service rollout procedures, and support environment consistency
Partner with Product Owners, QA teams, DevOps, Security, and Business Analysts to deliver high‑quality releases
Produce clear technical documentation, architecture diagrams, and operational runbooks
Participate in technical reviews, provide constructive feedback, and mentor junior engineers
Communicate effectively with internal stakeholders to clarify requirements, risks, and design considerations
Conduct performance tests to ensure applications handle high efficiency flawlessly
Collaborate closely with multi-functional teams to efficiently implement solutions
Expand test automation and help to ensure quality in different test environments