Senior Big Data Backend Engineer | AWS & Spark

Unisys; Tysons (VA); On-site; USD 140,000 - 200,000; Full time

Job summary

Unisys is seeking a Senior Backend Engineer to design, develop, and support scalable backend systems for a high-volume financial market platform on AWS. You will work in a greenfield architecture, leveraging distributed microservices, big data technologies, and AI-assisted tooling to drive innovation and performance.

You will collaborate with cross-functional teams to define requirements, implement robust APIs, and ensure production readiness with strong DevOps practices.

Qualifications

• Bachelor’s degree in computer science, information technology, engineering, or related technical field.
• 8+ years of professional software engineering experience with leadership capabilities.
• 3+ years of hands-on development experience in Data Engineering, Python / Scala / Java, SQL.
• 3+ years working with Big Data technologies such as Hadoop, Spark, or Presto, etc.
• 2+ years developing REST/web services and writing complex SQL queries for relational databases.
• Proven experience with AWS services including EMR (Hive/Presto), ECS, Lambda, and S3.
• Proficiency with DevOps practices and CI/CD pipelines using tools like Jenkins, Cloud Formation, etc.
• Working knowledge of scripting languages.

Responsibilities

• Design, develop, test, implement, and support technical solutions within an Agile environment using distributed microservices and big-data tech.
• Partner with cross-functional teams to understand requirements and testing scenarios, delivering scalable solutions.
• Build and maintain high-performance API platforms on AWS infrastructure with fast access to big data.
• Leverage AI tools to enhance development efficiency, code quality, and innovation throughout the lifecycle.
• Drive technical innovation by staying current with emerging trends, evaluating new tools and frameworks.
• Demonstrate a growth mindset, take ownership of deliverables, maintain customer-centric focus, and exercise sound technical judgment.

Skills

Big Data

Spark

AWS

Production support

Backend engineering

Performance optimization

REST APIs

SQL

Python/Scala/Java

DevOps

Education

Bachelor's degree in CS/IT/Engineering

Tools

Hadoop

Spark

Presto

Hive

AWS EMR

AWS ECS

S3

Job description

Unisys is seeking a Senior Backend Engineer to design, develop, and support scalable backend systems for a high-volume financial market platform on AWS. You will work in a greenfield architecture, leveraging distributed microservices, big data technologies, and AI-assisted tooling to drive innovation and performance.

You will collaborate with cross-functional teams to define requirements, implement robust APIs, and ensure production readiness with strong DevOps practices.