Senior Backend Software Engineer

Addison Group; Washington (District of Columbia); Remote; USD 89,544 - 96,432; Part time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401(k)

Job summary

A leading staffing agency is seeking a Senior Backend Software Engineer to play a pivotal role in transforming a core financial product. This remote contract position requires expertise in Java, Kotlin, or Scala and the ability to deliver high-availability services in a cloud-native environment. Ideal candidates will have over 4 years of backend development experience, a solid understanding of relational databases, and familiarity with microservices architecture.

Qualifications

• 4+ years of backend development experience.
• 2+ years of hands‑on experience with Java, Kotlin, or Scala.
• Solid understanding of relational databases like PostgreSQL.

Responsibilities

• Lead the development, testing, and delivery of reliable backend services.
• Help define and evolve the system architecture.
• Deliver high-availability, high-scalability services.
• Mentor peers and foster a strong engineering culture.

Skills

Java

Kotlin

Scala

Microservices

Kubernetes

PostgreSQL

Code reviews

CI/CD

Education

Bachelor’s degree in Computer Science or related field

Tools

Kafka

Docker

Job description

Job Title: Senior Backend Software Engineer

Location: Remote

Employment Type: Contract

Pay Rate: $65 - $70/ hour

Benefits: This position is eligible for medical, dental, vision, and 401(k).

The Role

We are seeking a Senior Software Engineer to play a pivotal role in transforming a core financial product.

Key Responsibilities

• Lead the development, testing, and delivery of reliable backend services
• Help define and evolve the system architecture in a service-oriented environment
• Translate complex business requirements into scalable technical solutions
• Deliver high-availability, high-scalability services in a cloud-native environment
• Mentor peers and foster a strong engineering culture
• Drive innovation through new ideas and continuous improvements
• Work closely with product and design teams throughout the product lifecycle
• Support production systems and participate in the on‑call rotation

Preferred Background & Experience

• Bachelor’s degree in Computer Science or related field
• 4+ years of backend development experience with modern tech stacks
• 2+ years of hands‑on experience with Java, Kotlin, or Scala
• Solid understanding of relational databases (e.g., PostgreSQL) and ORM tools
• Experience with microservices or service‑oriented architecture (SOA)
• Comfortable working in Kubernetes‑based infrastructure environments
• Strong sense of ownership and ability to work end‑to‑end from concept to production
• Familiarity with collaborative development practices like code reviews and CI/CD pipelines

Nice to Have

• Interest in personal finance or experience with consumer financial products
• Familiarity with distributed systems technologies such as Kafka and Docker
• Exposure to full‑stack development (React, TypeScript, or similar)
• Prior experience in fintech, digital banking, or financial services

Addison Group is an Equal Opportunity Employer. Addison Group provides equal employment opportunities (EEO) to all employees and applicants without regard to race, color, religion, gender, sexual orientation, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran, in accordance with applicable federal, state, and local laws. Reasonable accommodation is available for qualified individuals with disabilities upon request.