Senior Software Engineer, Back-End – Power Packs

Collectors

Senior Backend Engineer building and operating backend services for the customer-facing Power Packs experience. Collaborating across teams to support product capabilities and enhance data modeling.

Posted 6/25/2026full-timeCalifornia • 🇺🇸 United StatesSenior💰 $140,971 - $228,870 per yearWebsite

Tech Stack

Tools & technologies

ApacheAWSCloudDockerDynamoDBJavaJavaScriptKafkaKubernetesNode.jsNoSQLPostgresPythonSpringSpring BootSpringBootTypeScript

About the role

Key responsibilities & impact

Participate across the entire software development lifecycle, taking features from concept to production release
Contribute backend and fullstack plumbing where needed to connect services, APIs, and product experiences end to end
Collaborate with Product, Engineering, and partner teams to translate business requirements into clean technical designs
Troubleshoot data, integration, and service issues across a large distributed codebase
Contribute to technical documentation to improve maintainability and team velocity
Help raise the bar on system design, observability, and engineering best practices across the team
Leverage AI tooling, with a preference for Claude, to accelerate software design, architecture, and implementation while maintaining strong engineering judgment and code quality

Requirements

What you’ll need

5+ years of software engineering experience building backend or data-intensive systems in production environments
4+ years experience / strong proficiency in Java and the Spring Boot framework
Strong fundamentals working with databases and data modeling, both relational (e.g. PostgreSQL) & NoSQL (e.g. DynamoDB)
Experience with building applications in the cloud with AWS and experience with serverless infrastructure such as AWS Lambda
Experience with containerization and orchestration infrastructure (e.g. Docker, Kubernetes, ECS)
Experience collaborating with Engineering and Product teams to turn complex business requirements into clean and extensible APIs
Possess strong technical, analytical, troubleshooting, and communication skills with the ability to visualize and document processes
Proficient at using appropriate security, documentation, and/or monitoring best practices
Familiar with Agile/Scrum methodologies
Comfortable using AI tooling, preferably Claude, to support solution design, system architecture, and software implementation in day-to-day engineering work
Nice to Have: Experience supporting white-label or multi-tenant product architectures
Experience with distributed messaging systems such as Apache Kafka
Experience with Python as well as test frameworks such as pytest or unittest
Experience with Node.js and Typescript
Experience with streaming services such as Twitch
Experience with fullstack development and contributing to frontend work

Benefits

Comp & perks

Health Insurance: All full-time employees are eligible to enroll in Medical, Dental, and Vision
Additional Benefits: Full-time employees are eligible for fertility, commuter, and educational assistance benefits
401(K) Matching Plan: We are proud to offer a competitive 401k matching plan to our employees to support their future financial goals
Vacation: All salaried employees are eligible for flexible time-off
Holiday Pay: All regular, full-time employees are eligible for ten company paid holidays
Employee Discounts: Employees receive discounts on select grading services for approved submissions
Flexible Hours: Many of our teams offer flexible schedules with varying shifts and will work with you to accommodate your needs
Fun Working Environment: Our team members are invited to participate in celebrations, holiday events, and team building activities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

JavaSpring BootPostgreSQLDynamoDBAWSAWS LambdaDockerKubernetesApache KafkaPython

Soft Skills

analytical skillstroubleshooting skillscommunication skillscollaborationvisualizationdocumentationtechnical designengineering judgmentproblem-solvingteam velocity