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1,624 system software engineer jobs at 689 companies in Fairfield, CT

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Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
2d
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System Design Engineer - AI Cluster Software Engineer
Santa Clara or Austin or Secaucus or Markham
HybridFull Time
AMD
AMDNASDAQ: AMD: Designs and manufactures computer processors and graphics technology.
5+ YOE5+ years professional software development; proficiency with JavaScript/TypeScript and modern frontend frameworks, backend services/APIs, Linux, containers, CI/CD, cloud/on-prem deployment, IaC and scripting; Bachelors/Masters in CS or software/computer engineering.
JavaScript, TypeScript, React, Angular, Vue, Linux, perf, flamegraphs, nvprof, rocprof, eBPF, containers, CI/CD, ROCm, RCCL, Instinct GPUs, EPYC, Slurm, Kubernetes, Apptainer, Singularity, Ansible, Terraform, Python, bash, Lustre, BeeGFS, RDMA
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5d
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System Design Engineer - AI Cluster Software Engineer
Austin or Santa Clara or Secaucus or Markham
$133k-$200k/yr HybridFull Time
AMD
AMDNASDAQ: AMD: Designs and manufactures computer processors and graphics technology.
5+ YOE5+ years software development experience; daily use of AI coding assistants; frontend (JavaScript/TypeScript, React/Angular/Vue), backend services, Linux, containers, CI/CD, cloud/on-prem deployment, testing and production support.
JavaScript, TypeScript, React, Angular, Vue, Linux, perf, flamegraphs, nvprof, rocprof, eBPF, ROCm, RCCL, EPYC, Slurm, Kubernetes, Apptainer, Singularity, Ansible, Terraform, Python, bash, Lustre, BeeGFS, RDMA, CI/CD
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1mo
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Senior Software Engineer
New York City, New York, United States
$180k-$230k/yr OnsiteFull Time
Baton
Baton: Marketplace for buying and selling small businesses.
Senior software engineer experienced with production AI systems and full-stack development.
Python, Go, GraphQL, React, TypeScript
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1mo
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Software Engineer
New York City, New York, United States
$157k-$235k/yr HybridFull Time
Stripe
Stripe: Provides online payment processing and financial infrastructure for businesses.
2+ YOEBachelor's in CS/related + 2 years software engineering experience; 2+ years with Ruby, React, TypeScript, AWS, MongoDB, SQL/Presto; experience building full-stack web applications, designing backend systems, and payment systems.
Ruby, Scala, Go, React, TypeScript, AWS, MongoDB, SQL, Presto, JavaScript
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1mo
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Software Engineer
San Francisco or New York City or Barcelona
$150k-$270k/yr HybridFull Time
Rillet
Rillet: AI-native ERP software for finance and accounting teams
5+ YOE5+ years software engineering experience; strong backend fundamentals; product-minded; ability to own full-stack features; experience scaling systems in high-growth environments.
Svelte 5, TypeScript, Kotlin, Spring Boot, PostgreSQL, AWS, Stripe, Ramp, Salesforce, Java, SOC 2, SSO/SAML
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4d
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Software Engineer
New York or Austin
$140k-$155k/yr HybridFull Time
Vestwell
Vestwell: Digital infrastructure for workplace retirement and savings programs.
2+ YOE2+ years software engineering experience. Proficiency with Typescript, Node.js, NestJS, SQL databases, unit testing/TDD, service-oriented systems, Git, AWS, and Agile methodologies.
Typescript, Node.js, NestJS, SQL, Git, AWS, React, HTML, CSS, Jenkins
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1w
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Software Engineer, Robotics
Austin or New York City or San Francisco or Seattle
$269k-$317k/yr OnsiteFull Time
Fluidstack
Fluidstack: Provides high-performance cloud GPU infrastructure for AI development.
Experience shipping production robotics/autonomy software, ROS or equivalent middleware experience, engineering for remote failure, integrating robot systems with enterprise software, and debugging hardware-software boundaries.
ROS, C++, Python, Go, Gazebo, Isaac
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2mo
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Software Engineer, Video
New York City or San Francisco or Los Angeles or Seattle
$190k-$260k/yr RemoteFull Time
Whatnot
Whatnot: Social marketplace for buying and selling via live streams
6+ YOE6+ years software engineering experience, Bachelor's in CS or equivalent, experience with scaled WebRTC systems, AWS/DevOps experience, strong system design and problem-solving skills.
WebRTC, AWS
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1mo
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Staff Software Engineer
New York City, New York, United States
$242k-$300k/yr OnsiteFull Time
Legora
Legora: AI workspace for legal document research and drafting.
Senior software engineer with extensive experience designing scalable systems, shipping high-impact features, leading technical delivery, and mentoring engineers; strong system design and cross-functional collaboration skills.
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6d
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Principal Software Engineer
Jersey City or Houston
$204k-$285k/yr OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
7+ YOE7+ years software engineering experience, enterprise system design, production AI/ML and LLM systems, strong Python/Java skills, cloud-native experience, data engineering and observability expertise.
Python, Java, Kafka, Redis, MemCached, Dynatrace, Splunk, Grafana, Airflow, Temporal, Databricks, Snowflake, Spark, PySpark, Apache Iceberg, AWS, Azure, GCP, AWS Bedrock, Azure OpenAI
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1w
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Software Engineer
San Francisco or Los Angeles or New York City
HybridFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
Proven software engineering experience; proficiency in one or more languages (Python, Java, Go, JavaScript/TypeScript); familiarity with cloud platforms (AWS/GCP/Azure); strong communication and system design skills.
Python, Java, Go, JavaScript, TypeScript, AWS, GCP, Azure
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2mo
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Software Engineer, Growth
New York City, New York, United States
OnsiteFull Time
Garage
Garage: Marketplace for buying and selling specialized emergency vehicles and equipment.
2+ YOE2+ years software engineering experience; AI-native mindset; proven ability to ship at scale; systems thinking; customer-facing aptitude.
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5d
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Staff Software Engineer
New York, New York, United States
$194k-$260k/yr HybridFull Time
Celonis
Celonis: Provides process mining software for business process optimization.
8+ YOEBS in CS (MS/PhD preferred),8+ years software engineering, strong C++ (17), experience with database internals/query engines and large-scale data systems, analytical and mentoring skills.
C++ (17), Starrocks, ClickHouse
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1mo
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Senior Software Engineer
New York or United States
$180k-$250k/yr HybridFull Time
Category Labs
Category Labs: Developing a high-performance EVM-compatible Layer 1 blockchain protocol.
5+ YOE5+ years software engineering experience in Rust, C++, or C; experience building performant systems, distributed algorithms, consensus, and cryptography; strong software architecture and performance optimization skills; BS/MS/PhD in CS or equivalent.
C++, Rust, C, GitHub
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1mo
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Senior Software Engineer
New York City, New York, United States
OnsiteFull Time
Blink Health
Blink Health: Digital platform for affordable prescription medications and pharmacy access.
5+ YOE5+ years software engineering experience; ownership of large systems; expertise in a modern language (Python, JavaScript, Go), distributed systems, API design, performance optimization, and mentoring skills; BS in CS or equivalent experience.
AWS, Python, JavaScript, MySQL, Postgres, Linux
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3mo
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Software Engineer, Compute Infrastructure
San Francisco or New York City or Seattle or London
$230k-$405k/yr HybridFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
Strong software engineering skills; experience with production infrastructure; distributed systems or HPC experience; ability to debug complex systems and improve reliability.
Kubernetes, RDMA, NCCL, GPU infrastructure, CaaS, agent infrastructure, observability, profiling, benchmarking, development tooling, Linux, Python, C/C++, GPU/accelerator tooling
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6d
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Principal Software Engineer
Santa Monica or Los Angeles or New York City or Bellevue or Seattle or San Francisco or Palo Alto
$235k-$414k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Provides visual messaging software and augmented reality wearable devices.
10+ YOE10+ years software development experience, technical leadership experience, BS in a technical field (or equivalent), experience architecting distributed systems, strong software design and debugging skills, proficiency using AI tools and modern engineering workflows.
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3w
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Software Engineer - Platform Engineer
New York, New York, United States
$150k-$200k/yr HybridFull Time
Clear Street
Clear Street: Cloud-native capital markets platform for institutional trading and clearing.
5+ YOE5+ years platform/SRE/DevOps experience; strong software fundamentals in Go/Java/Python; experience with Kubernetes, cloud-native systems, CI/CD, Terraform, and platform engineering.
Kubernetes, AWS, Terraform, ArgoCD, GitHub Actions, Helm, Kafka, Temporal, PostgreSQL, Snowflake, Datadog, Go, Java, Python, gRPC & Protobuf, Tilt, Internal Platform APIs and Developer Tooling
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4w
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Senior Software Engineer
New York City or Washington or Austin or San Francisco
$195k-$235k/yr OnsiteFull Time
Method Financial
Method Financial: Connects financial accounts and processes debt payments via API.
5+ YOE5+ years software engineering experience; expert knowledge of JavaScript, Python or Java; experience with Node and React; building scalable production systems; strong communication and debugging skills.
JavaScript, JS, Node, React, Python, Java, AWS, Cloudflare, CI/CD, ACH, RTP
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2mo
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Software engineer, agents
New York City, New York, United States
$141k-$292k/yr HybridFull Time
Writer
Writer: Platform for building and deploying enterprise generative AI agents.
3+ YOE3+ years professional software engineering with Python; experience building distributed systems and backend APIs; working with AI agents, agent frameworks, vector databases, and cloud platforms.
Python, Docker, Kubernetes, LangChain, AI frameworks, AWS, GCP, Azure, React, TypeScript, Vector databases
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