Senior/Principal Java Developer

Post Date

Mar 30, 2026

Location

Merrimack,
New Hampshire

ZIP/Postal Code

03054
US
May 30, 2026 Insight Global

Job Type

Contract

Category

Programmer / Developer

Req #

BOS-0232d0c8-327f-41f6-84ab-64afbef60d33

Pay Rate

$56 - $70 (hourly estimate)

Job Description

We are seeking a Senior/Principal Java Developer to help design, enhance, and modernize mission-critical brokerage and tax processing systems. You will collaborate closely with architecture, product, and business partners to build reliable, scalable solutions that support complex financial platforms. These systems operate in high throughput, low-latency environments and must remain resilient during periods of market volatility. You will work in a fast-paced, collaborative environment and contribute to engineering excellence and operational stability.
Compensation: $70 - 85/hr
Exact compensation may vary based on several factors, including skills, experience, and education.
Benefit packages for this role will start on the 1st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to HR@insightglobal.com.To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/.

Required Skills & Experience

• Bachelor’s degree or equivalent experience in Computer Science or a related field
• 7+ years of software engineering experience
• 4+ years building RESTful microservices using Java and Spring Boot
• 2+ years of hands on AWS cloud native development
• Experience with AWS services including Lambda, EC2, AWS Batch, DynamoDB, SQS, SNS, and Aurora Postgres
• Experience with Infrastructure as Code (Terraform)
• Experience with CI/CD pipelines using Jenkins
• Experience with container orchestration technologies such as Kubernetes
• Experience with Kafka and resilient messaging platforms
• Strong SQL and relational database experience
• Experience with unit and integration testing (JUnit, Mockito, Cucumber, Jest)
• Strong analytical, communication, and problem solving skills

Nice to Have Skills & Experience

• Experience building systems that scale under high TPS and volatile traffic patterns (25k+)
• Experience modernizing legacy systems to cloud native platforms
• Experience designing highly resilient, fault tolerant distributed systems
• Industry experience in financial services or other high transaction, data intensive environments

Benefit packages for this role will start on the 1st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.