Senior Software Engineer

360 Media Direct•Philadelphia, PA

10d•$70 - $75•Remote

About The Position

Our client, a technology company, provides marketing, sales, and customer support services ranging from consumer goods to the rapidly changing print media space. We operate a lead generation platform and marketing network handling millions of new customers monthly, which has rapidly become a leader in its space. We also run customer rewards programs and ecommerce efforts with big brand partners, marketing to a wide range of book and magazine lovers.

Requirements

Substantial experience building and running production software for seven years or more.
Production experience with AWS, particularly Lambda, API Gateway, DynamoDB, SQS or EventBridge, S3, IAM and CloudWatch services you've run and debugged, not only configured.
Strong working knowledge of TypeScript and Node.js; you should be productive in it from the start.
Production experience with both SQL and NoSQL data stores PostgreSQL, MySQL or SQL Server for relational work, including query tuning and indexing, and DynamoDB or similar for key-value and single-table design. Most of our systems use both.
Understanding of infrastructure as code, and experience implementing it yourself with CDK, the Serverless framework, Terraform, CloudFormation or similar.
Proven experience working in scalable, high-traffic application platforms.
Comfortable inheriting systems you did not build, working out what an unfamiliar system actually does and deciding whether to extend it, replace it, or leave it alone.
Knowledge of CI/CD workflows and unit testing best practices; we use GitHub Actions across every repository.
Strong history of observing best practices with Git and task management.
Excellent written communication, and comfort working asynchronously with a small distributed team.
Functional knowledge of HTML, CSS and a modern front-end framework, and comfort maintaining UIs. This is a primarily-backend role, but our team is full-stack in some capacity.

Nice To Haves

Previous experience scaling a legacy .NET, PHP or Java application into modern best-practice standards, and enough C# or PHP to understand what you're replacing.
Deep experience with AWS's serverless technology offerings.
Python, particularly for ETL and data work.
Day-to-day use of AI coding assistants in a real engineering workflow, and the judgment to tell when a confident answer is wrong.
Transactional email and deliverability at scale SES, Postmark, SPF/DKIM/DMARC, bounce and complaint handling.
Ad tech experience lead generation, tracking, or attribution.
Analytics tooling Redshift, AWS Glue, dbt or Snowflake.
Consumer privacy and data compliance work, particularly CCPA and DSAR workflows.
Ecommerce platform integrations; we run a multi-merchant Shopify platform, though prior Shopify experience is not expected.

Responsibilities

Architect solutions that scale horizontally and handle heavy traffic without manual intervention; real-time paths like click tracking and lead validation are where latency and correctness both count.
Build and operate serverless backends on AWS Lambda behind API Gateway, event-driven flows over EventBridge and SQS, DynamoDB, and Step Functions for orchestration.
Write and deploy the infrastructure yourself; every stack we run is AWS CDK v2 in TypeScript.
Plan out and execute a path for iteratively migrating legacy applications to newer solutions reading the existing C#, PHP and SQL Server systems well enough to establish what they really do, then designing and shipping the replacement in sequenced waves alongside a running business.
Build and maintain the data pipelines behind partner and internal reporting DynamoDB streams into Aurora PostgreSQL, S3 through Glue into Redshift Serverless, and the materialized views on top.
Work with product owners to understand feature needs and integrate them into existing products.
Assist our partner companies with integrating to our APIs, and build custom integrations with theirs.
Debug applications across the full stack, diving into services and logs to help diagnose issues and replicating customer scenarios.
Help define test strategy and triage alongside our QA engineer, and keep quality consistent across the release cycle.