Senior Software Engineer

Epsilon; Irving (TX); On-site; USD 88,900 - 165,100; Full time

Benefits offered by this job

Flexible time off and paid holidays

Comprehensive health coverage

Tuition assistance

Job summary

Epsilon is seeking a highly experienced Senior Software Engineer in Irving, Texas to design and build robust backend systems using Java and Python. This role emphasizes AI-assisted development and collaboration with various teams to ensure high-quality project delivery.

The ideal candidate will have a strong background in backend engineering, a degree in Computer Science or related field, and familiarity with modern Java build tools and AI coding platforms. Epsilon offers competitive benefits and fosters a positive work environment.

Qualifications

• 7–10 years of hands-on software development experience.
• Strong backend engineering experience with Java and Python.
• Experience with AI-assisted development tools and practices.

Responsibilities

• Design, develop, and maintain scalable backend services.
• Apply AI-assisted development methodologies.
• Collaborate with cross-functional teams.

Skills

Java

Python

Data Structures & Algorithms

REST APIs

Agile

Education

Bachelor’s or Master’s degree in Computer Science or related field

Tools

Maven

Git

Docker

Kubernetes

Job description

Overview

We are looking for a highly experienced Senior Software Engineer (7–10 years) to design, build, and scale robust backend systems using Java and Python in an Agile environment. This role emphasizes AI-assisted development guided by clear technical specifications. Engineers use modern AI coding tools such as Cursor, Claude Code, and Kiro. These tools speed up development while maintaining high engineering rigor and production quality.

Responsibilities

• Design, develop, and maintain scalable backend services using Java and Python
• Apply spec‑driven AI‑assisted development as a core practice, including:
  • Translating detailed functional and technical specifications into high‑quality code using AI tools
  • AI‑assisted code generation, refactoring, and optimization with strong human validation
  • Prompt‑driven development aligned to explicit design and acceptance criteria
  • Intelligent debugging, test generation, and code reviews using tools like Cursor, Claude Code, and Kiro
• Build and integrate RAG‑based solutions and Agentic AI workflows into enterprise systems
• Lead system design and architecture discussions
• Ensure high code quality through reviews, testing, and engineering best practices
• Collaborate with product, data, platform, and cross‑functional teams
• Own and resolve complex production issues

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience)
• 7–10 years of hands‑on software development experience
• Strong expertise in Java and Python
• Strong backend engineering experience with Java (e.g., Spring or similar frameworks) and production‑grade service development
• Experience with common Java build and delivery tooling (e.g., Maven / Gradle) and source control workflows (e.g., Git, pull requests)
• Strong Data Modeling skills and experience with relational and NoSQL databases
• Experience working in Unix/Linux environments, including automation and scripting
• Mandatory experience with spec‑driven AI‑assisted development
• Practical, day‑to‑day usage of AI coding tools such as Cursor, Claude Code, and similar platforms
• Ability to validate, refine, and productionize AI‑generated code against explicit specifications
• Mandatory hands‑on experience with:
  • RAG (Retrieval‑Augmented Generation) architectures
  • Agentic AI systems (tool‑using agents, orchestration, multi‑step reasoning workflows)
• Strong fundamentals in:
  • Data Structures & Algorithms
  • Object‑Oriented Programming
  • Design Patterns and System Design
• Experience building and operating backend systems in production
• Solid understanding of REST APIs, microservices, and distributed systems
• Proven ability to own problems end‑to‑end, including driving design, implementation, testing, and production support
• Demonstrated technical leadership (mentoring junior engineers, raising code quality via reviews, and ensuring implementations meet specifications and standards)
• Experience working in Agile / Scrum teams

Why You Might Stand Out From Other Talent

• Frontend exposure using Angular or similar frameworks
• Experience with Databricks, Spark, or large‑scale data processing
• Experience with data modeling, data warehousing, and/or building ETL pipelines
• Cloud platforms (AWS / Azure / GCP) and DevOps practices
• CI/CD pipelines, Docker, Kubernetes
• Observability, monitoring, and performance tuning experience

Additional Information

Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. For decades, we’ve provided marketers from the world’s leading brands the data, technology and services they need to engage consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. And 1 Voice to harmonize engagement across paid, owned and earned channels.

Our pillars aren't just words. They're how we show up every day.

• People centricity: We focus on employee well‑being in an environment where colleagues truly care about each other.
• Collaboration: We work together, support one another, and collectively achieve goals.
• Growth: There are endless opportunities for growth through learning, development and career advancement.
• Innovation: We drive progress through cutting‑edge solutions and forward‑thinking approaches.
• Flexibility: We’ve created a balance between work and personal life, and we encourage adaptability to solve problems creatively.

• Act with integrity
• Work together to win together
• Innovate with purpose
• Respect all voices
• Empower with accountability

Benefits

• Time to Recharge: Flexible time off (FTO), 15 paid holidays
• Time to Recover: Paid sick time
• Family Well‑Being: Parental/new child leave, childcare & elder care assistance, adoption assistance
• Extra Perks: Comprehensive health coverage, 401(k), tuition assistance, commuter benefits, professional development, employee recognition, charitable donation matching, health coaching and counseling

Epsilon benefits are subject to eligibility requirements and other terms. Epsilon is an Equal Opportunity Employer. Epsilon’s policy is not to discriminate against any applicant or employee based on actual or perceived race, age, sex or gender (including pregnancy), marital status, national origin, ancestry, citizenship status, mental or physical disability, religion, creed, color, sexual orientation, gender identity or expression (including transgender status), veteran status, genetic information, or any other characteristic protected by applicable federal, state or local law. Epsilon also prohibits harassment of applicants and employees based on any of these protected categories. Epsilon will provide accommodations to applicants needing accommodations to complete the application process. Please reach out to [e-mail] to request an accommodation.

For San Francisco Bay and Los Angeles Areas: Epsilon will consider for employment qualified applicants with criminal histories in a manner consistent with the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance and San Francisco Police Code Sections 4901-4919, commonly referred to as the San Francisco Fair Chance Ordinance. Applicants with criminal histories are welcome to apply.

Compensation Range: USD $88,900.00 - USD $165,100.00/Annually. This is the pay range the Company believes it will pay for this position at the time of this posting. Compensation will be determined based on the skills, qualifications, and experience of the applicant along with the requirements of the position. The Company reserves the right to modify this pay range at any time. The application deadline for this job posting is 7/17/2026.