Top Software Engineer Jobs in NYC, NY

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.

Leads agile software engineering teams by designing, developing, testing, debugging, and deploying secure, scalable applications. Reviews production code, improves operational stability, automates recurring remediation, promotes responsible AI-assisted development, and evaluates vendor and architectural solutions. Requires strong software development lifecycle expertise, cloud-native experience, application resiliency, security, agile methodologies, and financial services IT knowledge.

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.

Leads enterprise adoption of agentic AI-enabled engineering practices, establishing governance, security, auditability, and human oversight. Designs scalable software frameworks, writes secure production code, reviews and debugs systems, and shapes AI-enabled architecture across Consumer and Community Banking. Partners with product and engineering leaders on roadmaps, advises cross-functional teams, and drives automation across development, testing, releases, incident triage, and root-cause analysis.

Senior Software Engineer responsible for designing scalable systems serving millions of borrowers and financial partners. The role includes shaping architecture and technical roadmaps, maintaining production-grade systems, mentoring engineers, collaborating with Product, Design, and Operations, and improving organization-wide engineering practices. Teams include consumer conversion, voice AI, and compliance and money operations. The position requires in-person work at least three days per week in New York City.

The Founding Engineer will lead the development of Sailor Health's AI-powered platform, building systems for patient care and mentor the engineering team.

Lead technical architecture and large, ambiguous projects for Braze’s Messaging Experience division. Build and evolve scalable backend systems, real-time and batch processing infrastructure, orchestration frameworks, and complex web interfaces using Ruby on Rails, TypeScript, and React. Mentor engineers, improve reliability and observability, reduce technical debt, and deliver foundational platforms and code-generation tooling supporting messaging journeys across multiple teams.

Build and scale TrueMark’s education platform, focusing on real-time integrity analysis, typing behavior models, AI rubric grading, similarity search, and platform reliability. Work closely with founders and customers, influence the roadmap, and act as an IC-focused technical lead while contributing across backend and frontend systems.

Lead the development of an AI-powered platform for senior mental health, building systems for patient experience, and mentoring the engineering team.

Build the core AI platform for an AI-native trading experience. Develop a high-performance Rust backend supporting streaming responses, low-latency tool execution, caching, and model orchestration. Design secure, observable APIs and runtime components with authentication, authorization, rate limiting, auditing, tracing, retries, and fallbacks. Build safe trading action infrastructure with deterministic previews, confirmations, idempotency, and audit logs while partnering with product and frontend teams.

Lead the shared UI developer tooling platform used by engineering teams across the organization. Responsibilities include designing module federation architecture, Vite build tooling, CI pipelines, CLI automation, dependency management, security scanning, monorepo workflows, editor validation, preview environments, and migration strategies. The role also involves mentoring engineers, influencing technical standards, partnering with product groups, and using AI to improve engineering productivity.

Leads software engineering efforts within commercial banking, providing technical guidance, developing and reviewing secure production code, and solving complex design and functionality challenges. Drives adoption and governance of AI-assisted engineering practices, automation, responsible AI controls, and SDLC frameworks. Serves as a subject matter expert, influences product and technical decisions, promotes engineering standards, and partners with technical and business stakeholders to deliver stable, scalable cloud-native systems.

Leads development of secure, scalable Java and cloud applications; designs, codes, tests, debugs, and reviews production software. Drives AI-assisted engineering practices, automation, monitoring, operational stability, secure SDLC adoption, and application resiliency. Evaluates vendor and internal architectural solutions while coaching teams on responsible AI use, secure coding, testing, and agile delivery.

Provides technical leadership on complex, high-impact engineering projects from design through launch. The role involves architecture, company-wide initiatives, engineering excellence, mentoring technical leaders, and establishing standards for scalable, reliable, secure, observable systems. The engineer will collaborate across teams, communicate complex technical topics, and apply customer-focused decision-making and A/B testing techniques.

Build and ship backend features end-to-end using Ruby on Rails and SQL. Lead complex technical projects, solve architecture challenges, establish standards, conduct meaningful code reviews, resolve high-risk bugs, document systems, collaborate across engineering teams, and mentor junior engineers.

Associate Software Engineer responsible for designing, developing, testing, reviewing, and deploying scalable software applications. Participates in the full application lifecycle, including requirements analysis, technical design, coding, agile ceremonies, sprint planning, story development, and production support. The role requires collaboration with senior engineers, adherence to software engineering best practices, and experience with programming languages, web services, cloud platforms, integrations, and modern application frameworks.

Develop and optimize Solana’s AccountsDB storage engine, including indexing, caching, snapshots, background maintenance, and crash recovery. Improve validator throughput, latency, memory, and disk efficiency while ensuring correctness across forks. Build stress, fault-injection, and performance tests; profile low-level systems; collaborate with protocol teams; and document designs and review code. The role requires strong systems programming, storage architecture, Linux I/O, kernel and memory-management knowledge, concurrency expertise, and performance optimization experience.

Develop and support scalable, secure applications and infrastructure across cloud and on-premises environments. Responsibilities include software development, testing, debugging, incident investigation, monitoring, deployment automation, server and network support, cloud migration, infrastructure scripting, and security alignment. The role also contributes to data-intensive analytics initiatives and continuous improvement while collaborating with technical and business stakeholders.

Develop and support enterprise full-stack applications for a trust accounting and FinTech platform. Build .NET and C# backend services, SQL Server solutions, REST APIs, and modern web interfaces. Modernize legacy systems, troubleshoot production issues, and collaborate in an Agile environment. Design secure AI and LLM capabilities using prompt engineering, RAG, tool calling, and enterprise AI integrations while protecting financial data. Translate complex business requirements into scalable technical solutions and mentor less experienced developers.

Lead the technical design and delivery of electronic prescribing modernization for OncoEMR. Build and review full-stack software using C#, VB.NET, React, and .NET services; modernize legacy WebForms workflows; develop safety-critical prescribing features; partner with product, QA, design, clinical, and vendor teams; manage complex projects from planning through rollout; and mentor engineers through code reviews, pairing, and design guidance.

Own and operate Justworks’ shared Temporal platform, hardening its self-hosted cluster for multi-tenant reliability, scalability, security, and regional resilience. Define SLOs, observability, alerting, and safe workflow conventions; guide tenant teams on retries and idempotency; lead migrations and infrastructure consolidation; manage capacity and costs; and participate in on-call incident response, troubleshooting, and postmortems.

Build and deploy full-stack custom solutions for strategic customers using monday.com APIs, SDKs, app frameworks, and automation tools. Lead customer discovery, translate business needs into technical designs, develop production applications, manage deployment and DevOps considerations, and support live solutions. Projects typically last 2–6 weeks and require strong communication, independent execution, and customer collaboration.

Build and maintain scalable Java backend services and APIs for internal platforms. Integrate services with Salesforce and other systems, contribute to internal web applications, troubleshoot distributed systems, and ensure strong testing, observability, resilience, and CI/CD practices. Collaborate with product, technical program management, and business teams to deliver reliable tools supporting operations, marketing, support, risk, and data functions.

Build and own production software across the stack, including web applications, APIs, internal workflow tools, and backend services. Develop high-throughput systems for ingesting, processing, indexing, and serving large video and sensor datasets. Improve reliability through testing, monitoring, debugging, permissions, observability, and root-cause fixes. Collaborate with operators, researchers, customers, and business stakeholders to rapidly deliver and iterate on practical tools.