Top Software Engineer Jobs in New York City, NY

As a Senior Software Engineer on the Cash App Banking team, you'll design, execute, and deliver banking system features while driving architectural improvements and mentoring teammates.

As a Senior Software Engineer, you will lead technical design, execution, and delivery of banking features, drive architectural decisions, and collaborate across teams to enhance customer experiences.

Lead and manage a six-person engineering team building Atlas Infinite Backup’s distributed storage systems. Own the roadmap for durability, recovery, disaster recovery, compliance, cost efficiency, and GA readiness. Partner across storage, Atlas, billing, and product teams; manage customer escalations; drive design reviews, operational readiness, incident response, and production reliability. Develop engineers, lead multi-quarter initiatives, and balance near-term delivery with long-term architecture and operational investments.

Build and maintain backend data connectors and shared connectivity infrastructure for Palantir Foundry. Develop connector SDKs, integrations, build and distribution tooling, testing frameworks, observability, security capabilities, and migration solutions. Collaborate across teams to support batch and streaming ingestion, exports, change data capture, interactive queries, and writeback. Diagnose production reliability and performance issues, improve compatibility and maintainability, and help prepare connectivity software for open-source use.

Build and maintain automation systems, backend services, and lightweight internal web applications. Analyze cross-functional workflows, identify automation opportunities, and implement scalable solutions. Collaborate with engineering, product, operations, and sales teams while using AI-assisted development tools and LLM integrations. Participate in code reviews and continuous improvement while developing software engineering fundamentals.

Lead development of scalable Java backend applications and high-availability cloud services. Design architectures, REST APIs, databases, caching systems, and distributed session infrastructure. Mentor engineers, drive technical initiatives, address performance and scalability challenges, and uphold quality and automation practices for endpoint management products.

Design, implement, test, and deploy scalable software solutions for high-availability environments. Collaborate with technical teams, apply modern frameworks and technologies, evaluate solutions against business goals, document software and system designs, and mentor colleagues through knowledge sharing and training. The role supports virtualization, microservices, software-defined networking, network functions virtualization, and big data initiatives while resolving technical issues independently.

Design, build, and own scalable microservices and secure APIs that transfer value across blockchain and banking protocols. Extend in-house blockchain infrastructure, integrate with banks and cloud services, troubleshoot production issues, document system and testing procedures, and collaborate with product and engineering teams to deliver reliable payment experiences.

Design, build, and maintain scalable backend enterprise services for user, group, and membership management. Develop TypeScript, REST, and JSON services; implement SCIM-based identity synchronization and lifecycle management; operate high-scale systems through on-call rotations; and use Terraform, AWS CloudFormation, and Kubernetes to deliver highly available applications. Collaborate across teams on large-scale projects involving security, identity protocols, and access control models.

Design, develop, deploy, and maintain scalable distributed systems, microservices, APIs, data pipelines, event-driven applications, and cloud services for a marketing technology platform. Responsibilities include database optimization, observability, incident response, AI integration, production controls, technical documentation, code reviews, testing, and client implementation reviews.