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Senior Software Engineer

Eliassen Group

Chicago, IL • 9/19/2026

Engineering , Information Technology , Professional

Job Description

Job Description
Description:

Hybrid At least 2 days per week in office in Chicago, IL

Our client seeks a Senior Software Engineer for the CDP team to drive design, delivery, technical strategy, and execution for cloud-native data platforms. You will define engineering standards, mentor engineers, and ensure the platform scales securely and reliably. You will work across Java, Python, Spark, TypeScript, JavaScript, Angular, AWS services, event-driven architectures, and SQL/NoSQL databases to deliver performant, resilient solutions aligned with business objectives.

We can facilitate w2 and corp-to-corp consultants. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate: $65.00 to $75.00/hr. w2

Responsibilities:
  • Deliver large-scale cloud-native data platforms on AWS leveraging REST APIs, microservices, and event-driven applications to build scalable and resilient systems.
  • Work hands-on across the stack including Java, Python, Spark, TypeScript, JavaScript, Angular, AWS services, event-driven architectures, and SQL/NoSQL databases.
  • Drive optimization for performance, scalability, reliability, security, governance, and cost efficiency.
  • Collaborate with global engineering, product management, architecture, and business stakeholders to align solutions with strategic objectives.
  • Own the end-to-end SDLC including requirements, design, development, deployment, observability, and documentation.
Experience Requirements:
  • 5-8 years of software engineering with expertise in scalable UX-driven applications and distributed systems.
  • Proven design and build experience with REST APIs, microservices, Kubernetes, and distributed systems.
  • Experience in Data Warehousing, Data Lakes, Delta Lake, and modern big data ecosystems.
  • Hands-on in Python, Java, Angular with strong OOP and functional programming skills.
  • Experience with PySpark and Apache Spark for high-performance distributed data processing.
  • Depth in microservices with Kubernetes for eventing and serving.
  • Experience with AWS services such as S3, Lambda, API Gateway, and EventBridge.
  • Strong experience with Kafka, SNS, SQS, and databases including PostgreSQL, SQL Server, Aurora, DynamoDB, MongoDB, and Redis.
  • Hands-on with IaC tools such as Terraform and Ansible.
  • Understanding of CI/CD and DevOps using Jenkins, GitHub/GitLab, Bitbucket, GoCD, and automated pipelines.
  • Experience implementing unit, integration, and regression testing with best practices.
  • Strong analytical skills to diagnose and solve complex technical problems.
  • Exposure to Generative AI technologies including LLMs, RAG, and agentic systems.
  • Nice to have: PySpark with Databricks, Azure and/or GCP experience, and data platforms in privacy-safe CDP or MarTech environments.
Education Requirements:
  • B.E./B.Tech/M.Tech/MCA in Computer Science, Information Technology, or a related field.
Recruitment Transparency Notice
Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screeningand hiringprocess. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team (, ) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group’s use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.

If you have any indication of fraudulent activity, please contact.

About Eliassen Group:
Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.
Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.
Don’t miss out on our referral program! If we hire a candidate that you refer us to then you can be eligible for a $1,000 referral check!