Full Stack Engineers (multiple positions available)

Deerfield, IL (onsite)

6 Months Contract

NOTE: Preferred Local and W2 candidates

Responsibilities:

• Build and release reliable software systems at scale, focusing on digital payment solutions.
• Design elegant solutions and strategize the future state of the larger technical ecosystem.
• Independently innovate and advocate for best practices to solve complex problems.
• Guide the team on implementing solutions from inception to production through hands-on examples.
• Ensure scalability and performance of software systems, handling low-latency and high-throughput scenarios.
• Utilize reactive programming concepts and frameworks, such as Vert.x.
• Differentiate and work with various data formats including JSON, XML, TOML, CSON, and YAML.
• Manage databases, understanding the strengths and use cases for PostgreSQL, Oracle, and MongoDB.
• Collaborate with the team to share technical knowledge and best practices.

Requirements:

• Proven experience working on digital payment systems for major companies like Amex, Visa, Capital One, etc.
• Strong proficiency in core Java fundamentals, data structures, thread safety, JVM and garbage collection mechanisms, Java versions (e.g., 1.8 vs. 20), serialization/deserialization, connection pooling, and thread pooling concepts.
• Deep understanding of low-latency and high-throughput scenarios, design patterns, and distributed transaction processing.
• Knowledge of reactive programming concepts and the Vert.x framework.
• Ability to differentiate between JSON, XML, TOML, CSON, and YAML formats.
• Understanding of the strengths and use cases for PostgreSQL, Oracle, and MongoDB databases.

Highly Desired Skills:

• Experience in Site Reliability Engineering (SRE), including debugging, knowledge of APM tools, understanding of service mesh within Kubernetes, and experience with Grafana dashboards.
• Solid understanding of networking protocols like TCP/IP and the differences between TCP and UDP.
• Engagement with relevant technical blogs and sharing technical knowledge.
• Familiarity with cloud concepts, including horizontal/vertical scaling, parallel processing, and hybrid cloud functionalities.
• Knowledge of programming language choice for specific project needs, such as when to utilize Scala or Python.

Additional Information:

• Experience with ETL (Extract, Transform, Load) processes is a plus.
• Experience with SRE/Alert Monitoring tools is particularly desired.