Principal Software Engineer - AI Platform & Architecture Thomson Reuters CorpPrincipal Software Engineer - AI Platform & ArchitectureBrooklyn, NY$183,100–$340,000 / yearFinally, Thomson Reuters offers the following additional benefits: optional hospital, accident and sickness insurance paid 100% by the employee; optional life and AD&D insurance paid 100% by the employee; Flexible Spending and Health Savings Accounts; fitness reimbursement; access to Employee Assistance Program; Group Legal Identity Theft Protection benefit paid 100% by employee; access to 529 Plan; commuter benefits; Adoption & Surrogacy Assistance; Tuition Reimbursement; and access to Employee Stock Purchase Plan. Own the end-to-end architecture and design of backend services (C#/.NET, Python, FastAPI, PostgreSQL, AWS, Vercel) that integrate and orchestrate across heterogeneous systems and technology stacks, powering generative AI agents, complex workflows and document‑centric experiences.
Principal Software Engineer/Developer FidelityPrincipal Software Engineer/DeveloperJersey City, New JerseyRemoteEducation and Experience : Bachelor’s degree in Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and five (5) years of experience as a Principal Software Engineer/Developer (or closely related occupation) designing and implementing digital assets technology solutions using Agile methodologies in an electronic trading environment. Or, alternatively, Master’s degree in Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and three (3) years of experience as a Principal Software Engineer/Developer (or closely related occupation) designing and implementing digital assets technology solutions using Agile methodologies in an electronic trading environment.
Principal Software Engineer Homecare Software Solutions LLCPrincipal Software EngineerNYRemote$165,000–$180,000 / yearExtensive experience architecting, building and delivering complex, high-performance SaaS solutions deployed in cloud environments (AWS or similar) using microservices and serverless architectures. Leadership in Design: Lead the end-to-end design and development of advanced healthcare analytics products, ensuring they are insightful, intuitive, scalable, reliable, secure, and high-performing.
Principal Software Engineer RoPrincipal Software EngineerNew York, NY$251,200–$340,000 / yearYou’ll partner across engineering, product, design, and cross-functional leadership to define technical strategy, anticipate risks, mentor senior engineers, and guide teams toward resilient, maintainable, high-quality solutions. A proven track record of technical leadership across multiple teams or domains, including designing and evolving complex distributed systems.
Principal Software Engineer Standard Template LabsPrincipal Software EngineerNew York City, New YorkWe’re looking for a Principal Software Engineer, Full-Stack AI to own the end-to-end technical vision for how intelligence is designed, built, and experienced across our platform - from data ingestion and model reasoning to APIs, user interfaces, and real-world operational impact. You will architect and ship production AI systems, build scalable backend and data platforms, and work across the stack to ensure AI capabilities are observable, trustworthy, and intuitive for enterprise users.
Principal Software Engineer Elastic NVPrincipal Software EngineerNY$135,700–$214,700 / yearElasticsearch develops and distributes technology and information that is subject to U.S. and other countries' export controls and licensing requirements for individuals who are located in or are nationals of the following sanctioned countries and regions: Belarus, Cuba, Iran, North Korea, Syria, or Russia, including the Ukrainian territories annexed by Russia (The Crimea region of Ukraine, The Donetsk People''s Republic (DNR), The Luhansk People''s Republic (LNR), Kherson or Zaporizhzhia). The project portfolio spans four areas where the build-vs-buy shift is most compelling: Platform productivity tools - internal developer portals, knowledge search layers, engineering onboarding systems, and workspace tooling that unifies disparate SaaS tools into a single Elasticsearch-backed search and intelligence layer.
Principal Software Engineer ArloPrincipal Software EngineerNew York City, New York$275,000–$300,000 / yearSuccess is measured by whether the systems you build become core infrastructure for how the company operates, reducing operational overhead, improving member experience, and allowing teams to scale far beyond traditional insurance companies. We do that by identifying fraud earlier, steering members toward higher-quality and lower-cost care, automating operational overhead, and eliminating vendors whose business exists mostly to take a cut.
Principal Software Engineer Railway Health IncPrincipal Software EngineerNew York City, NY$275,000–$300,000 / yearSuccess is measured by whether the systems you build become core infrastructure for how the company operates, reducing operational overhead, improving member experience, and allowing teams to scale far beyond traditional insurance companies. We do that by identifying fraud earlier, steering members toward higher-quality and lower-cost care, automating operational overhead, and eliminating vendors whose business exists mostly to take a cut.
Principal/Senior Software Engineer, Experimentation Platform - CoreAI Microsoft CorpPrincipal/Senior Software Engineer, Experimentation Platform - CoreAINew York, NY$119,800–$234,700 / yearPreferred: Master's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. Qualifications Required: Bachelors Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
Distributed Systems Software Engineer - Public Cloud (Mid/Senior/Lead/Principal) Salesforce.com, Inc.Distributed Systems Software Engineer - Public Cloud (Mid/Senior/Lead/Principal)New York, NY$117,200–$313,700 / yearYou will need deep experience with concurrency, large scale systems, proficiency with solving real-world data management challenges, a strong understanding of how to craft solutions that are highly available, and a proven ability to design, develop, and optimize the core back-end systems. Our Public Cloud engineering teams are responsible for innovating and maintaining a large scale distributed systems engineering platform that ships hundreds of features to production for tens of millions of users across all industries every day.
Principal Software Engineer Twilio IncPrincipal Software EngineerNY$188,240–$235,300 / yearProven track record of architecting, delivering, and driving technical strategy of large-scale data platforms, especially utilizing cloud computing systems like AWS and deploying via K8s/Terraform/Helm. The ideal candidate will have deep expertise in data systems, strong leadership skills, and a proven track record of delivering complex data projects at scale.
Principal Software Engineer - Postgres ClickHouse, Inc.Principal Software Engineer - PostgresNYRemote$140,000–$200,000 / yearWith more than 3,000 customers and ARR that has grown over 250 percent year over year, ClickHouse leads the market in real-time analytics, data warehousing, observability, and AI workloads. This is a strategic and high-impact role for an engineer who can work independently across complex technical areas: from storage and performance optimization to distributed coordination and extension development.
Principal Software Engineer, Data Architecture MasterCardPrincipal Software Engineer, Data ArchitecturePurchase, NY$195,000–$323,000 / yearAll activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must: Abide by Mastercard's security policies and practices; Ensure the confidentiality and integrity of the information being accessed; Report any suspected information security violation or breach, and. The successful candidate will establish the architectural vision for modernizing data platforms across hybrid cloud and on-premises environments, supporting both high-volume batch processing and low-latency, real-time workloads.
Principal Robotics Software Engineer Blue River Technology Inc (Inactive)Principal Robotics Software EngineerNYRemote$174,000–$305,000 / yearA combination, not necessarily all-inclusive, of the following: Vehicle Control & Cross-Group Collaboration: Work across multiple Deere engineering groups to change vehicle safety behavior, control the vehicle, and unlock valuable data signals that improve machine intelligence, autonomy, and customer outcomes. Cross-Functional Alignment: Partner closely with Robotics, Perception, Machine Learning, Hardware, Systems Engineering, and Product teams to define software requirements, hardware-software interfaces, and system-level validation plans.
Principal Software Engineer Arcadia Solutions LLCPrincipal Software EngineerNY$250,000–$350,000 / yearApache Spark drives distributed compute; dbt drives transformations; Kafka moves streams; Cassandra/Scylla handles high-throughput storage; OpenSearch / Elasticsearch powers search and indexing - all orchestrated on Kubernetes in AWS, with services spanning TypeScript/Node, Python, Go, and Java/Kotlin (polyglot, by design). Demonstrable depth with agentic AI-assisted development - actively using agentic coding tools, context-engineered environments, and AI-augmented workflows, with examples of AI-native tooling, custom agents, or team patterns you've built, shipped, or substantially shaped.
Principal Software Engineer Astronomer IncPrincipal Software EngineerNew York City, NY$277,000–$390,000 / yearArchitect for Varied Isolation Levels: Oversee the architecture of a self-contained software platform, ensuring all services, images, dependencies, and configurations can run smoothly whether deployed in connected private clouds or highly secure, zero-egress networks. Control Plane & API Productization: Proven success building production-grade infrastructure control planes, with a deep understanding of API design principles required to support programmatic customer workflows and user interfaces.
Principal Software Engineer Medidata Solutions IncPrincipal Software EngineerNew York, NY$184,500–$246,000 / yearCelebrating over 25 years of ground-breaking technological innovation across more than 38,000 trials and 12 million patients, Medidata offers industry-leading expertise, analytics-powered insights, and one of the largest clinical trial data sets in the industry. More than 1 million registered users across approximately 2,300 customers trust Medidata's seamless, end-to-end platform to improve patient experiences, accelerate clinical breakthroughs, and bring therapies to market faster.
Principal Software Engineer - FDE Microsoft CorpPrincipal Software Engineer - FDENew York, NY$142,800–$274,800 / yearMasters Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelors Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. We are a global team of world-class engineers who have been working in a Forward Deployed Engineering (FDE) model for more than a decade, embedding directly within customer teams to solve their toughest challenges, side-by-side, and shipping production-ready solutions in days, not months.
Principal Software Engineer AVM Consulting IncPrincipal Software EngineerNY$175,427–$180,000 / yearResponsibilities include supporting production operations by triaging technical issues and delivering effective solutions, promoting smooth DevSecOps practices, and leveraging advanced technologies including Java 8+, Spring Boot, AWS services (S3, EC2, and Lambda), Kafka, Elasticsearch, Memcached, Redis, RabbitMQ, ActiveMQ, Docker, Jenkins, GitLab CI/CD, Terraform, and CloudFormation. Candidates must demonstrate experience with Java 8+ features, Spring Boot, object-oriented programming principles, AWS cloud services (S3, EC2, and Lambda), Kafka, Elasticsearch, Memcached, Redis, RabbitMQ, ActiveMQ, Docker and containerization technologies, Jenkins and GitLab CI/CD pipelines, Terraform, CloudFormation, and DevOps principles.
Principal Software Engineer I - Serverless - Platform Control Plane Elastic NVPrincipal Software Engineer I - Serverless - Platform Control PlaneNY$159,800–$252,800 / yearElasticsearch develops and distributes technology and information that is subject to U.S. and other countries' export controls and licensing requirements for individuals who are located in or are nationals of the following sanctioned countries and regions: Belarus, Cuba, Iran, North Korea, Syria, or Russia, including the Ukrainian territories annexed by Russia (The Crimea region of Ukraine, The Donetsk People''s Republic (DNR), The Luhansk People''s Republic (LNR), Kherson or Zaporizhzhia). What You Bring: 8+ years building software, including setting technical direction for complex distributed systems running production at scale (Staff or Principal level, or equivalent scope).