Principal Software Engineer

Epsilon; Bengaluru; On-site; INR 6,000,000 - 10,000,000; Full time

Job summary

Epsilon in Bengaluru is seeking a Principal Software Engineer to lead multi‑channel SaaS platform development. You will drive architecture, mentoring, and delivery across Java, Python, and data‑driven features, collaborating with product, analytics, and DevOps teams.

You will participate in design, testing, and deployment of scalable solutions, emphasizing performance, security, and cost efficiency in a fast‑moving industry. Strong communication and leadership are essential.

Qualifications

• Bachelor's degree in Computer Science or equivalent experience.
• 16+ years of experience in Java, Python, Big Data, DevOps, Spark, Kafka, SQL, Angular, Cloud (AWS/GCP).
• Strong knowledge of RESTful services and microservices architectures.

Responsibilities

• Lead development and maintenance of enterprise-scale applications.
• Guide technical discussions and collaborate with cross-functional teams.
• Develop and review objectives, requirements, and specifications with stakeholders.
• Focus on cost optimization, scalability, and secure software solutions.

Skills

Java

Python

Big Data

Distributed systems

Kubernetes

DevOps

Cloud (AWS/GCP)

REST API

Education

Bachelor's degree in CS or equivalent

Tools

Docker

Kubernetes

Databricks

Git/Jira/Confluence

Job description

About Business Unit

The Product team forms the crux of our powerful platforms and helps connect millions of customers worldwide with the brands that matter most to them. This team of innovative problem solvers develops and builds products that position Epsilon as a differentiator, encouraging an open and balanced marketplace built on respect for individuals, where every brand interaction holds value. Our full-cycle product engineering and data teams chart the future and set new benchmarks for our products, by using industry standard methodologies and sophisticated capabilities in data, machine learning, and artificial intelligence. Driven by a passion for delivering smart end-to-end solutions, this team plays a key role in Epsilon’s success story.

Overview

About Business Unit

The Product team forms the crux of our powerful platforms and helps connect millions of customers worldwide with the brands that matter most to them. This team of innovative problem solvers develops and builds products that position Epsilon as a differentiator, encouraging an open and balanced marketplace built on respect for individuals, where every brand interaction holds value. Our full-cycle product engineering and data teams chart the future and set new benchmarks for our products, by using industry standard methodologies and sophisticated capabilities in data, machine learning, and artificial intelligence. Driven by a passion for delivering smart end-to-end solutions, this team plays a key role in Epsilon’s success story.

Why We Are Looking For You

We are looking for Principal, Software Engineer to work on groundbreaking multichannel SaaS Digital Marketing Platform that focuses on uniquely identify the customer’s patterns, effectively interact with them across channels and achieve a positive return on marketing investment (ROMI). The platform consolidates and harmonizes the features and functionality usually present in standalone services and channel-specific messaging platforms. This provides marketers with a tightly harmonized, easily orchestrated, cross channel marketing capability.

• Responsible for development and maintenance of applications with technologies involving Enterprise Java, Python, Distributed technologies, Big Data, Databricks, DevOps and Kubernetes
• Collaborate with developers, product manager, business analysts and business users in conceptualizing, estimating and developing new software applications and enhancements.
• Assist in developing and outlining software's objectives, work, and specifications in collaboration with internal users and departments.
• Collaborate with team for QA Automation and to define test cases, metrics, and resolve questions about test results.
• Assist in the design and implementation process for new products, research and create POC for possible solutions.
• Develop components based on business and/or application requirements
• Create unit tests in accordance with team policies & procedures
• Advise, and mentor team members in specialized technical areas as well as fulfill administrative duties as defined by support process
• Create Value-adds that would contribute to Cost Optimizations/ Scalability/ Reliability/Secure solutions

What You Will Enjoy In This Role

About the Team and opportunities

The India Product Engineering team forms the crux of our powerful PeopleCloud platform and connects millions of customers. The 400+ strong product organization in Epsilon India, is a full-cycle Engineering team that drives architecture, POCs, implementation, Quality Automation, product management, support, operations and DevOps. There are, 25+ Scrum teams as part of the India Engineering center, driving outcomes across the breadth of the Epsilon PeopleCloud suite of products. This team of innovative problem solvers develops and builds products that help Epsilon be a market differentiator. They map the future and set new standards for our products, empowered with industry standard methodologies, ML and AI capabilities. The team passionately delivers intelligent end-to-end solutions and plays a key role in Epsilon’s success story

Tech Stack

Our integrated suite of modular products is designed to help deliver personalized experiences and drive meaningful outcomes. Our tech stack caters to a fusion of data and technology with SaaS offerings developed as a Cloud-first approach. Here, a solid understanding of software security practices including user authentication and authorization and being data-savvy would be key. You should also come with the ability to demonstrate standard processes in design patterns, and design algorithms for software development that focus on high quality and agility. You must also have a good understanding of Agile Methodologies like SCRUM.

You can refer this article also.

Click here to view how Epsilon transforms marketing with 1 View, 1 Vision and 1 Voice.

Responsibilities

What you will do

• Be responsible for development and maintenance of applications with technologies involving Enterprise Java, Spring framework, Python and Distributed technologies.
• Lead the team for technical discussions and reviews and collaborate with developers, product manager, business analysts and business users in conceptualizing, estimating and developing new software applications and enhancements.
• Help develop and detail software's objectives, work you're doing, and specifications in collaboration with internal users and departments.
• Collaborate with QA team to define test cases, metrics, and resolve questions about test results.
• Assist in the design and implementation process for new products, research and create POC for possible solutions.
• Develop components based on business and/or application requirements
• Create unit tests in accordance with team policies & procedures
• Advise, and mentor team members in specialized technical areas as well as fulfill administrative duties as defined by support process
• Focus on Cost Optimizations/ Scalability/ Reliability/Secure solutions for all the owned features

Qualifications

• Bachelor’s degree or equivalent experience or equivalent in computer science
• 16+ years’ experience in Java, Python/BigData/DevOps/Spark/Kafka/SQL/Angular/Cloud like AWS or GCP/Microservices
• Preferred knowledge/experience in the following technologies
• Big Data Ecosystems: Hadoop, Spark, Kafka, Databricks
• Docker and Kubernetes
• Streaming and Batch Analytics processes
• Experience in following Tools: Eclipse, Maven, Gradle, DB tools, Bitbucket/JIRA/Confluence
• Can develop SOA services and good knowledge of REST API and Micro service architectures
• Strong working experience on performance optimizations and focus on Cost Optimization, and Scalability
• Solid knowledge of web architectural and design patterns
• Knowledge of JavaScript UI frameworks is desirable (backbone, angular, react, etc.)
• Understands software security practices including user authentication and authorization, data validation and an understanding of common DOS and SQL injection techniques.
• Familiar with profiling, code coverage, logging, common IDE’s and other development tools.
• Scripting Languages: JavaScript, Linux and Python
• Familiar with Agile Methodologies – SCRUM and Strong communication skills (verbal and written)
• Ability to work within tight deadlines and effectively prioritize and complete tasks in a high-pressure environment.
• Demonstrated verbal and written communication skills, and ability to work with Business, Analytics and IT organizations
• Ability to work effectively in short-cycle, team oriented environment, managing multiple priorities and tasks
• Ability to identify non-obvious solutions to complex problems
• Behavioral Attributes
• Great teammate with excellent interpersonal collaboration skills
• Strong verbal and written communication
• Possess Can-Do attitude to overcome challenges with high energy levels
• Self-motivated, directed and passionate

Nice To Have Qualifications

• Technical
• BigData/Python/Spark/Cloud Certifications
• Strong technical knowledge of SQL and data analysis with relational database modeling principles and techniques
• Working knowledge of Data Technologies in the Cloud such as AWS services of compute, storage, messaging, RDS/Redshift or Snowflake
• Nice to have strong skills in writing SQL queries (Oracle/SQL Server/Warehouse/NoSQL) and experience in Databricks
• Basic UNIX/Linux knowledge/exposure is a plus but not required
• Knowledge of data warehousing concepts
• Nice to have proven expertise in ETL/ELT tooling such as Pentaho, Integration Services, Informatica, Data Pipeline, Glue
• Non-Technical
• Functional knowledge of CRM, Marketing, Loyalty
• Excellent Analytical and problem solving skills
• Ability to diagnose and solve problems quickly
• Strong time management skills with accountability
• Ability to take full ownership of tasks and projects

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.

Epsilon’s comprehensive portfolio of capabilities across our suite of digital media, messaging and loyalty solutions bridge the divide between marketing and advertising technology. We process 400+ billion consumer actions each day using advanced AI and hold many patents of proprietary technology, including real-time modeling languages and consumer privacy advancements. Thanks to the work of every employee, Epsilon has been consistently recognized as industry-leading by Forrester, Adweek and the MRC. Epsilon is a global company with more than 9,000 employees around the world.

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.

Our values guide us to create value for our clients, our people and consumers.

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

These pillars and values are our foundation—shaping our culture, guiding our decisions, and uniting us in common purpose.

Epsilon is an Equal Opportunity Employer

Epsilon is committed to promoting diversity, inclusion, and equal employment opportunities by using reasonable efforts to attract, recruit, engage and retain qualified individuals of all ethnicities and backgrounds, including, but not limited to, women, people of color, LGBTQ individuals, people with disabilities and any other underrepresented groups, traits or characteristics.