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Python Software Developer Jobs in Cos Cob, CT, US
1,700+ python software developer jobs from 610+ companies hiring in Cos Cob, CT, US.
4d
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Senior Bioprocess Engineer
New Haven, Connecticut, United States
$140k-$165k/yr OnsiteFull Time
Extensive hands-on bioprocess/ perfusion systems; lead end-to-end projects; strong control systems, hardware, and software integration.
LabVIEW, PLC/SCADA, Python, ROS-2
1d
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Technical Team Lead, Institutional Services
New York, New York, United States
$120k-$148k/yr HybridFull Time
7+ YOE1+ Mgmt7+ years of hands-on development; 1+ year people management; leadership, mentoring, communication; Proficient in Python, SQL, Node.js, React; experience with DevOps and system design.
Python, Java, XML, React, Node.js, Next.js, SQL, MySQL, PostgreSQL, Git, GitHub Actions, TravisCI, ElasticSearch, Solr, CI/CD
2w
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Manager, Systems Engineer
New York, New York, United States
$145k-$195k/yr OnsiteFull Time
8+ YOE3+ Mgmt8+ years systems engineering; strong technical leadership; program and project management; experience with AFC/transportation systems; hardware/software integration; willingness to travel.
UML, SysML, DOORS, JUnit, TestNG, Selenium, Jenkins, XML, SQL, API testing, SOAP, REST, Java, Python, Linux, Windows
5d
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Principal Data Engineer
Boulder or New York
$200k-$240k/yr HybridFull Time
10+ years software/data engineering; 5+ years adtech data infra; real-time streaming/batch pipelines; AWS; AI/agentic tooling experience.
Python, PySpark, Kafka, Databricks, AWS
1mo
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Consulting Application Engineer
Parsippany or Houston
HybridFull Time
5+ YOEFive+ years in chemical engineering with process simulation software experience; BS in chemical engineering, chemistry, or natural science; fluent English; hybrid role with travel up to 25%.
OLI Studio, OLI Flowsheet: ESP, Aspen HYSYS, Aspen Plus, UniSim, Petro-SIM, VMGSim, HTRI, AVEVA PRO/II, AVEVA DYNSIM, CHEMCAD, gPROMS, PIPESIM, OLGA, SysCAD, METSIM, ProMax, ProTreat, Python
1mo
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Cloud DevOps Engineer
New York, New York, United States
$120k-$150k/yr HybridFull Time
5+ YOE5+ years Azure-focused DevOps/CloudOps; Azure certifications preferred; strong IaC, monitoring, CI/CD, security, and scripting skills; degree in CS/Software Eng or related field.
Azure, Terraform, ARM templates, Bicep, GitHub Actions, Azure DevOps, Docker, Kubernetes, PowerShell, Bash, Python, Azure Monitor, Application Insights, Log Analytics
2mo
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Principal Data Engineer, Data Architecture
New York City or Andover
$134k-$198k/yr OnsiteFull Time
10+ YOE10+ years software engineering; 3+ years architect/principal in data domain; strong data pipelines, real-time/batch; mentoring; cross-team collaboration.
Databricks, Azure, Big data technologies, Python, SQL
1d
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Senior Analyst, Business Systems
New York, New York, United States
$160k-$180k/yr HybridFull Time
10+ YOE10+ years software development; strong C#, .NET; front-end with Blazor/React/Angular; SQL Server; data warehousing; Azure; CI/CD; APIs; AI solutions.
C#, NET, ASP.NET Core, Blazor, React, Angular, JavaScript, TypeScript, HTML, CSS, T-SQL, SQL Server, Azure, Azure DevOps, CI/CD, REST APIs, Git, GitHub, TFS, SVN, Python, Node.js, DBT, Dagster
1mo
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AI Engineering Summer Intern Stamford, CT
Stamford, Connecticut, United States
OnsiteInternship
Strong Python skills; experience with LLM APIs and prompt engineering; cloud AI familiarity; data engineering basics; Git/GitHub; AI development tools; prior AI project or internship in business settings.
Python, LLM APIs, Azure, Git, GitHub, ChatGPT, Claude, Gemini, Codex
2mo
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Founding Machine Learning Engineer
New York, New York, United States
OnsiteFull Time
8+ YOE8+ years in production ML systems; strong software engineering; cloud ML infrastructure; ML/data frameworks; full-stack capabilities; mentoring; high autonomy.
Python, Java, TypeScript, AWS SageMaker, Bedrock, Modal, Baseten, PyTorch, TensorFlow, Spark
2mo
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Senior Development Lead
Brooklyn, New York, United States
$160k-$175k/yr HybridFull Time
8+ YOE8+ years hands-on Python, React/Next.js; AI/LLMs with LangChain/LlamaIndex; finance/asset management experience.
Python, React, Next.js, LangChain, LlamaIndex, Snowflake, Databricks, PostgreSQL, MS SQL
1mo
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R&D Test and Design Validation Electrical Engineer
Budd Lake, New Jersey, United States
$138k-$231k/yr OnsiteFull Time
8+ YOEBS / MS in EE and 8+ years in test engineering; experience with automated test systems and software; cross-domain collaboration.
SCPI, VISA/IO, Python, C#, LabVIEW, MATLAB, HTBasic, VBA
1mo
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Senior Engineer, Internal tools
New York, New York, United States
RemoteFull Time
5+ YOE5+ years in software engineering; strong backend/full-stack skills; cloud, containers, CI/CD; API integrations; data modeling and SQL; strong communication.
Python, Go, TypeScript/Node.js, Java, GCP, AWS, Azure, Docker, Kubernetes, CI/CD, Workday, Salesforce, Slack, NetSuite, SQL
1w
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Staff Machine Learning Engineer - Search
Atlanta or New York City
$159k-$209k/yr HybridFull Time
7+ YOE7+ years in software/ML, 4+ years scalable architectures, 2+ years vector/semantic retrieval, 2+ years platform components, 1+ years cross-team leadership, cloud experience (AWS/GCP/Azure).
Python, Java, Spark, Flink, Kafka, Airflow, Terraform, AWS, GCP, Azure, Elasticsearch, OpenSearch, SageMaker, Bedrock, Databricks, PyTorch, TensorFlow, Scikit-learn
1mo
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Field Sales Engineer II, Enterprise-Northeast
United States or New York
$198k-$233k/yr RemoteFull Time
5+ YOEBS degree; 5 years pre-sales or related experience; ability to explain technical concepts; hardware/software evaluation experience; strong communication and customer-facing skills.
Python, JavaScript, Bash, APIs, IoT, Cloud
6d
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Photonic Test Engineer Co-op
Murray Hill, New Jersey, United States
OnsiteFull Time, Internship
Bachelor’s or Master’s student pursuing physics/electrical/computer engineering; basic software and test automation; hardware lab experience; team player.
Python, Test automation, Spectrum Analyzers, Power Meters, Laser Sources, Fibre optics, opto-electronic devices
1w
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Director, AI Engineering--Clinical Development and Operations (CD&O)
New York City, New York, United States
$177k-$294k/yr HybridFull Time
5+ YOEPhD or Master’s with several years of applied AI/ML experience in regulated environments; strong Python/ML tooling; production-grade AI systems; hybrid on-site role in NYC.
Python, TensorFlow, PyTorch, Keras, Scikit-learn, LangChain, LangGraph, Vertex AI, Claude, Java, JavaScript, TypeScript, React, FastAPI, SQL, PostgreSQL, Snowflake, S3, BigQuery, Neo4j, AWS, GCP, Azure
1mo
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AI Deployment Engineering Internship
New York, New York, United States
HybridInternship
0+ YOECS/AI background, ML/AI experience, Python, REST APIs, research ability, strong communication, interest in AI and VC.
Python, TensorFlow, PyTorch, REST APIs, Data Analysis
3w
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AI Ops Specialist
New York, New York, United States
OnsiteFull Time
5+ YOE5+ years software engineering; AI/LLM native; full-stack; startup founder energy; hands-on shipping.
Python, TypeScript, Notion, Linear, Slack, GitHub, APIs
3w
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Member of Technical Staff - Security
San Francisco or New York City
RemoteFull Time
8+ YOE8+ years in security engineering with emphasis on application security and endpoint detection; Python/FastAPI; experience with enterprise security and API/gateway attack patterns.
Python, FastAPI
2mo
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University 2026 Talent Acquisition AI Product Engineering Intern
Mountain View or McLean or New York City or Tampa
OnsiteFull Time, Internship
Pursuing a Bachelor's or Master's in CS/Engineering/AI; strong Python and API skills; experience with automation/AI apps; familiarity with LLM prompting or orchestration; strong systems thinking.
Python, APIs, LLMs, AI frameworks, Workflow automation tools, Webhooks
1w
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Market Making Quant
New York, New York, United States
$150k-$190k/yr OnsiteFull Time
6+ YOEMaster’s degree in CS/Math/Engineering; 6+ years in market making; Python (3.9+); equity derivatives knowledge; SQL; design patterns; unit testing; English fluency.
Python, SQL
1d
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Summer Intern, Platform Engineering
New York, New York, United States
$18/hr OnsitePart Time, Internship
0+ YOEPursuing a CS/SE degree; hands-on programming in Python/Java/Go/TypeScript; strong CS fundamentals; Git; REST APIs; interest in cloud; AI tools; good communication.
Python, Java, Go, TypeScript, Node.js, AWS, Kubernetes, Docker, REST, gRPC, Claude Code, Cursor, Git, CI/CD, PostgreSQL, Cloud services
1w
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Quantitative Technologist (Full-Time - DevOps & Systems Engineering)
Chicago or New York or Amsterdam
HybridFull Time
Proficient in Python; strong problem solving; experience with distributed systems and Linux; ability to thrive in a fast-paced trading environment; knowledge of algorithms and data structures; collaborative team player.
Python, Linux, Distributed Systems, HPC, Software Architecture, Data Structures, Algorithms
1w
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Engineering Manager, Data Cloud
United States or Canada or New York City
$150k-$240k/yr RemoteFull Time
5+ YOEExperience leading 5–10 engineers in data infrastructure or backend systems; strong software/data engineering background; coaching and cross-functional leadership; interest in cryptocurrency.
Apache Flink, Kafka, Databricks, Delta Lake, Iceberg, DBT, Terraform, AWS, S3, EC2, EKS, IAM, Kubernetes, Helm, GitHub Actions, Datadog, PagerDuty, Claude Code, GitHub Copilot, Java, Python, SQL, HCL
2w
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AI Engineering Lead
Fort Lee, New Jersey, United States
$250k/yr OnsiteFull Time
7+ YOE7+ years in applied ML/AI or realtime distributed systems; 3+ years leading production LLM/voice solutions; experience with realtime voice agents; RAG; Python/PyTorch; CS degree.
Python, PyTorch, TypeScript
1mo
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AI Consulting Associate Program (AI CAP) Engineering Intern - Summer 2026
New York, New York, United States
$35-$40/hr HybridInternship
Pursuing a degree in Computer Science, ML, Mathematics, or Engineering; graduation 2026 or 2027; strong Python and SQL; API/JSON familiarity; understanding of large language models; high curiosity and willingness to iterate.
Python, SQL, APIs, JSON, AWS
1mo
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Summer Intern, QA Engineering
New York, New York, United States
$20/hr OnsiteInternship
Internship for current juniors/seniors; 9 weeks, full-time in NY; strong JS/TS/Java; familiarity with test automation frameworks; API testing; Git and Python knowledge; good communication and collaboration.
Playwright, Cypress, Selenium, Postman, REST Assured, Jira, Git, Python
2mo
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Technical Lead
New York City, New York, United States
$200k/yr HybridFull Time
8+ YOE8+ years building production web apps; strong backend/data engineering; data-intensive, user-facing products; Python/JavaScript; RESTful APIs; full-stack capability; cloud data warehouses; leadership potential.
Python, JavaScript, RESTful APIs, SQL, Cloud platforms
1w
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Senior kdb+ Architect (Greenfield Project)
New York, New York, United States
OnsiteFull Time
5+ YOE5+ years in kdb+ development with deep q, time-series, and leadership; strong Unix/Linux, real-time and historical systems, and data ingestion.
kdb+, q, Unix/Linux, Python, Cloud, AWS, GCP, Azure
1mo
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Member of the Technical Staff — Internal AI Tooling
San Francisco or New York City
$165k-$210k/yr OnsiteFull Time
5+ YOE5+ years full-stack engineering; proficient in Python and TypeScript; experience building data pipelines, APIs, and scalable architectures; skilled with React/Vue/Angular frontend and Django/FastAPI/Flask/Node.js backend; cloud platforms (AWS/GCP/Azure); startup-oriented mindset; strong cross-team collaboration.
Python, TypeScript, React, Vue, Angular, Django, FastAPI, Flask, Node.js, AWS, GCP, Azure, HubSpot, Slack API, n8n, Fathom, Linear, LangChain
2w
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Platform Engineering Manager
Irvine or New York or San Antonio
$179k-$287k/yr OnsiteFull Time
10+ YOE5+ Mgmt10+ years engineering; 5+ years leading teams; experience with internal platforms or developer-facing products; cloud-native platforms; Kubernetes; Backstage/Port/Cortex; strong collaboration across Security, SRE, Architecture, and Engineering.
Backstage, Port, Cortex, Kubernetes, AWS, Docker, Terraform, TypeScript, Python, Java, Go, OpenTelemetry, CI/CD, GitHub, Jira, Confluence
3w
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MSCI Institute - Summer Intern
New York, New York, United States
$25-$35/hr OnsiteMultiple Commitments Available
0+ YOECurrently pursuing a degree in Computer Science, AI, ML, Data Science; Python and ML libraries experience; API integration; experience with large datasets.
1mo
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Manager - AI/LLMOps Forward Deployed Engineer
New York, New York, United States
$196k-$266k/yr HybridFull Time
7+ YOE7+ years in data engineering, MLOps, software engineering, or related infra roles; 2–3 years LLM-specific experience; production Python; at least one production LLM system; vector retrieval experience; agent SDK knowledge; cloud AI infra experience; observability; client-facing communication; travel up to 50%.
pgvector, Pinecone, Qdrant, Weaviate, Chroma, LangChain, LangGraph, LlamaIndex, OpenAI SDK, Anthropic Claude SDK, AWS Bedrock, SageMaker, EKS, Azure OpenAI Service, AKS, Vertex AI, GKE, Python
4d
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2026 Summer Intern - Tech
New York or Austin or King of Prussia
$40/hr HybridInternship
Rising or recent graduates; hybrid in New York City, Austin, or King of Prussia; backend language proficiency; SDLC understanding; Git; strong analytical and communication skills; collaborative mindset.
Python, TypeScript, Git, LangChain, OpenAI APIs, AWS, GCP, Azure, Asana, Jira, Notion, Monday.com, Salesforce, HubSpot
1d
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Intern - AI & Agentic Solutions - Summer 2026
New York, New York, United States
HybridPart Time
AI intern to embed with multiple teams, design and build agentic AI solutions, and deliver a real-world prototype.
LLM APIs, Python, LLM orchestration frameworks, CoPilot Studio, LangGraph, CrewAI, AutoGen
1mo
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Manager, Statistical Programming
Parsippany, New Jersey, United States
$103k-$140k/yr OnsiteFull Time
2+ YOEBachelor’s degree or higher in a relevant field; minimum 2+ years SAS programming in clinical research; expert in CDISC SDTM/ADaM; strong communication and collaboration skills.
SAS, R, Python, CDISC SDTM, CDISC ADaM, EDC, Regulatory_submissions
2mo
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Frontend Engineering Manager
New York, New York, United States
$150k-$190k/yr HybridFull Time
Experience leading frontend teams, strong React and TypeScript expertise, architectural guidance, Agile collaboration, and hands-on leadership.
React, TypeScript, Python, Django, Stripe, Agile, Kanban
4w
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Applied AI Architect
New York or Charlotte
HybridFull Time
Proven production AI/ML deployments, enterprise customer engagement, complex system scope and risk management, and strong cross-functional collaboration and communication.
Python, APIs, LLM, Cloud platforms, Data platforms, SQL
1mo
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Lead AI Solutions Architect - Full Stack
Princeton or Glen Allen or Coppell or Waltham or Philadelphia or Riverwoods or New York City or Chicago or Houston
$129k-$226k/yr HybridFull Time
10+ YOELeadership-focused AI solutions architect with 10+ years in full-stack engineering, GenAI/Agentic AI, data science, AI/ML, and applied AI engineering; proven leadership and mentoring experience.
Python, FastAPI, Angular, React, LangChain, LlamaIndex, SQL, NoSQL, Azure, AWS
HiringCafe market data
Python Software Developer Jobs market signals in Cos Cob, CT, US
These signals come from live HiringCafe job inventory, not a static article. Use them to compare the market, then open listings above to apply directly.
Open jobs
1,700+
Hiring companies
610+
Fresh sample
52% new in 30d
Salary visibility
69% show pay
Companies appearing in this market
FanDuelAcxiomAdaptive SecurityAndersenBexorgBJAKCapital GroupCast & Crew
Work location mix in visible results
Hybrid: 20Onsite: 18Remote: 4