60 junior platform engineer jobs at 54 companies in Fairfield, CT

2w
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Platform Engineer III (Multiple Openings)
New York, New York, United States
$132k-$190k/yr HybridFull Time
CME Group
CME GroupNASDAQ: CME: Operates global derivatives marketplaces for trading futures and options.
1+ YOEMaster's in CS/EE/EElectronic/IT plus 12 months related experience. Experience with automation, orchestration, infrastructure monitoring, incident mitigation, documentation, and cross-team collaboration.
1mo
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Platform Engineer
New York City, New York, United States
$100k-$120k/yr OnsiteFull Time
Instalily
Instalily: Building autonomous AI agents for complex enterprise workflows.
0+ YOE0–3 years experience building GTM data and automation systems; strong SQL and scripting (Python or JavaScript); working with APIs and GTM tools; experiment-driven and data-focused.
SQL, Python, JavaScript, APIs, LLM APIs, Clay, Apollo, HubSpot, Lemlist, Instantly, Vercel, Netlify
3w
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AI Platform Developer
New York, New York, United States
$180k-$300k/yr OnsiteFull Time
Qube Research & Technologies
Qube Research & Technologies: Global quantitative and systematic investment manager for liquid assets.
Strong foundation in AI/ML, experience with transformers and LLMs, Python and PyTorch skills, exposure to cloud platforms (e.g. AWS), and strong communication; degree in quantitative field or equivalent experience.
Python, PyTorch, AWS
4d
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AI Platform Engineer
Boston or Springfield or New York City
$105k-$138k/yr HybridFull Time
MassMutual
MassMutual: Sells life insurance, retirement plans, and investment services.
2+ YOEBachelor's in CS or related field, foundational cloud knowledge (AWS/GCP/Azure), 2+ years programming experience (Python/Go/Java), Git familiarity, and curiosity about AI/ML systems.
Python, Go, Java, Git, Docker, Kubernetes, Terraform, AWS, GCP, Azure, Degreed, LLM APIs
2w
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Software Engineer, AI Platform
San Francisco or New York City
$180k-$201k/yr HybridFull Time
Notion
Notion: Provides a unified workspace for notes, documents, and project management.
Experience building and operating AI/ML platform systems, observability, reliability, model integrations, and collaborating with product teams to ship production-ready AI features.
Apache Spark, Ray, Typscript, node.js
1d
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2027 Technology, Data, AI & Ventures Summer Internship Program - Platform Engineer Intern
New York City, New York, United States
$30-$35/hr HybridInternship
New York Life
New York Life: Provides life insurance, retirement income, and investment solutions.
Undergraduate or graduate student pursuing a technical degree, proficiency in Python, cloud architecture, API development, infrastructure-as-code (Terraform preferred), and DevOps concepts; eligible to work in the U.S.; available full-time for 11-week summer internship.
Python, Terraform, AWS, API
1mo
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Junior (Post-Graduate) Software Engineer
Warsaw or New York City or London or Singapore or Hong Kong or Poland
OnsiteFull Time
Balyasny Asset Management
Balyasny Asset Management: Global multi-strategy investment firm managing diverse alternative asset classes.
Recent CS graduate or equivalent experience; strong programming fundamentals; experience with AI-assisted coding tools; proficiency in at least one language (C#, Rust, C++, Java, Go, Python); exposure to distributed systems, messaging platforms, and AWS.
Rust, C#, .NET, .NET Core, C++, Java, Go, Python, Claude Code, Codex, REST, gRPC, Kafka, RabbitMQ, SQS/SNS, AWS, React, Angular, TDD/BDD
2mo
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Staff Systems Mainframe Engineer (Remote)
Texas or California or Colorado or Connecticut or Rhode Island or Nevada or New York City or Ithaca or Westchester County or Washington or United States
$90k-$180k/yr RemoteFull Time
The Home Depot
The Home DepotNYSE: HD: Retailer of home improvement products, building materials, and tools.
3+ YOE3+ years relevant IT experience, bachelor's degree or equivalent, legally permitted to work in the U.S., proficiency with infrastructure design, debugging, scripting, IaC, cloud platforms (GCP/Azure), CI/CD, version control, and mentoring junior engineers.
Java, GCP, Azure, Infrastructure as Code, CI/CD toolchain, Version control systems, debuggers, AI, runtime analysis, library systems
1mo
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DER Monitoring Platform Technician
Waterbury, Connecticut, United States
$25-$37/hr OnsiteFull Time
Ameresco
AmerescoNYSE: AMRC: Develops and operates renewable energy and energy efficiency projects.
Associate or bachelor’s degree in a STEM field or equivalent experience; proficiency with Microsoft Office; familiarity with monitoring hardware, DAS, basic networking, and reviewing technical drawings.
ASG AssetPlanner, data acquisition systems (DAS), Microsoft Outlook, Microsoft Excel, Microsoft Word, Microsoft Teams
1mo
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(Senior) Software Engineer, Experimentation Platform - CoreAI
Redmond or Mountain View or New York
$102k-$202k/yr HybridFull Time
Microsoft
MicrosoftNASDAQ: MSFT: Develops software, services, devices, and cloud computing solutions.
2+ YOEBachelor's in CS or related and 2+ years engineering experience (or equivalent); coding in C, C++, C#, Java, JavaScript, or Python; cloud and distributed systems experience preferred; must pass Microsoft cloud background checks.
C, C++, C#, Java, JavaScript, Python, Azure, AWS, GCP
2w
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Software Engineer 3, Documentation Platform
New York City or Palo Alto or Seattle
$106k-$209k/yr HybridFull Time
MongoDB
MongoDBNASDAQ: MDB: Cloud-based document database platform for software application development.
2+ YOE2+ years professional experience; strong TypeScript/JavaScript, Git, React, Next.js, CI/CD, MDX; experience with MongoDB and production web applications; excellent communication and collaboration skills.
Git, TypeScript, JavaScript, React, Next.js, CI/CD, MDX, MongoDB, MongoDB Atlas, AWS, Google Cloud, Microsoft Azure
2w
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Solutions Engineer
London or New York City
OnsiteFull Time
Encord
Encord: Data management and annotation platform for AI development.
1+ YOECustomer-facing technical experience in AI or ML, proficiency writing production-quality Python scripts, familiarity with cloud platforms (GCP/AWS/Azure), strong communication and technical discovery skills.
Python, REST APIs, SDKs, GCP, AWS, Azure
2mo
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Solutions Engineer, Advertiser Solutions, Activate
Manhattan or New York
$112k-$128k/yr HybridFull Time
PubMatic
PubMaticNASDAQ: PUBM: Operates a global digital advertising supply chain technology platform.
1+ YOEBachelor's degree in CS/Engineering (or related), 1+ years experience with Python/SQL and web apps, familiarity with ad tech platforms (Google Ad Manager, DV360, The Trade Desk, Amazon), APIs/SDKs, VAST/OpenRTB, plus strong communication and problem-solving skills.
Python, SQL, Google Ad Manager, DV360, The Trade Desk, Amazon, Mozilla Firefox, APIs, SDKs, VAST, OpenRTB, Tableau, Looker
1w
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GTM Engineer (GTM Automations)
Austin or Chicago or New York City or Salt Lake City or San Francisco
$100k-$145k/yr OnsiteFull Time
Gong
Gong: AI platform analyzing customer interactions to improve sales performance.
2+ YOE2+ years building automations or internal tools, experience shipping code (Python or TypeScript), familiarity with automation platforms and GTM stack, AI/LLM experience, strong commercial instinct and documentation skills.
Workato, Zapier, n8n, Salesforce, Clay, Snowflake, dbt, Gong, Python, TypeScript, Claude Code, Codex
2w
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TikTok R&D Engineer (Open Platform)
Los Angeles or Singapore or New York City or London or Dublin or Paris or Berlin or Dubai or Jakarta or Seoul or Tokyo
$156k-$317k/yr OnsiteFull Time
TikTok
TikTok: Global short-form video hosting and social media platform.
1+ YOE1+ years software development, distributed systems design and implementation, AI-agent and LLM experience, strong ownership and product/business understanding, EMR not required.
Cursor, Claude, Codex, Devin, Anthropic, OpenAI, GLM, Doubao
2mo
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Senior Machine Learning Operations Engineer, Agentic Systems Platform Engineering (New York, NY, US, 10036)
New York, New York, United States
$139k-$180k/yr HybridFull Time
Paramount
ParamountNASDAQ: PSKY: Produces and distributes media content across global entertainment platforms.
4+ YOE4–8+ years in MLOps or Platform Engineering; experience with API Gateways (Apigee) and Kubernetes (GKE); background in agentic orchestration.
Apigee, Kubernetes (GKE)
1w
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Process Improvement Engineer II (NYC)
New York, New York, United States
$88k-$117k/yr OnsiteFull Time
Victoria's Secret & Co.
Victoria's Secret & Co.NYSE: VSCO: Retailer of lingerie, apparel, and beauty products.
2+ YOE2+ years in process improvement or analytics, strong reporting/dashboard and Power Platform skills, ability to translate data into insights, project management and stakeholder partnership.
Microsoft Power BI, Microsoft Power Automate, Microsoft Power Apps, Microsoft SharePoint, Microsoft Excel, Microsoft Power Platform
1mo
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Assistant Vice President, Junior Information Security Engineer
New York, New York, United States
$110k-$130k/yr OnsiteFull Time
Newmark
NewmarkNASDAQ: NMRK: Commercial real estate brokerage and property management services.
5+ YOEBachelor's degree or equivalent, 5+ years in IAM and information security, experience with Microsoft Entra/Okta/Auth0, OAuth/OIDC/SAML, PAM (CyberArk/Keeper), IGA (SailPoint/Saviynt), ticketing (Dynamics 365/ServiceNow), cloud platforms, and strong communication.
Microsoft Entra, Okta, Auth0, OAuth, OIDC, SAML, LDAP, MS Active Directory, Kubernetes, CyberArk, Keeper, SailPoint, IBM, Saviynt, Dynamics 365, ServiceNow, Smartsheet, Monday.com, Microsoft Excel, Microsoft PowerPoint, AWS, Azure, GCP
1w
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Solutions Engineer I
Chicago or New York City
$98k-$123k/yr HybridFull Time
Box
BoxNYSE: BOX: Provides cloud-based content management and secure file sharing services.
1+ YOE4-year degree or equivalent,1+ years relevant customer-facing or technical experience,knowledge of LLMs,embeddings,APIs and web technologies,ability to lead technical engagements and demos.
LLMs, embeddings, Box AI, Box Web, Relay, Governance, Platform, API
2d
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AI Engineer
New York, New York, United States
$133k-$166k/yr OnsiteFull Time
Persistent Systems
Persistent Systems: Develops and manufactures secure mobile ad hoc networking systems.
2+ YOE2+ years software/data/AI engineering, strong Python, experience with generative AI, RAG, LangChain or similar, familiarity with major AI platforms, SQL knowledge, and strong communication skills.
Python, SQL, pandas, R, LangChain, LangGraph, LlamaIndex, CrewAI, AutoGen, Microsoft 365 Agents SDK, OpenAI Agents SDK, Claude Agent SDK, Google ADK, Azure AI Foundry, AWS Bedrock, Google Vertex AI, Databricks, FastAPI, Docker, Kubernetes, CI/CD, Hugging Face, Ollama AI, LangSmith, MLflow, Braintrust, Langfuse, Arize Phoenix, Microsoft Power BI, Tableau, PyTorch, TensorFlow, scikit-learn, XGBoost