Python Developer Jobs in Fairfield, CT, US

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2mo

AI Agent Engineer

New York City, New York, United States

$165k-$175k/yr HybridFull Time

Pelago: Virtual clinic for substance use management and treatment services.

Production-grade software experience; strong Python; AI/LLM workflows; API integration; cloud platforms; security in regulated environments.

Python, LLM, APIs, Cloud platforms (AWS, GCP, Azure), Docker, Kubernetes, Salesforce, Slack, Notion

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2mo

Staff Software Engineer

New Haven, Connecticut, United States

RemoteFull Time

Revalia Bio: Platform for drug discovery using donated human organs.

5+ YOE5+ years backend/full-stack experience; strong Python/FastAPI; AWS; AI tooling; RESTful APIs; DevOps mindset.

Python, FastAPI, PostgreSQL, AWS, GitHub Actions, Docker, AWS CDK, TypeScript, JavaScript, React, Next.js

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2mo

Software engineer, agents

New York City, New York, United States

$141k-$292k/yr RemoteFull Time

Writer: Builds and deploys generative AI agents for enterprises.

3+ YOE3+ years software engineering with Python in production; experience building distributed systems; cloud platforms; frontend (React/TypeScript); knowledge of AI agents, orchestration, and backend APIs; strong collaboration and problem-solving.

Python, AWS, GCP, Azure, Docker, Kubernetes, LangChain, React, TypeScript, APIs, Vector databases, CI/CD

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1mo

AI Engineer Intern

United States or Oklahoma or Texas or Missouri or Colorado or Washington or Virginia or Wyoming or Utah or Maine or New York or Ohio or Florida or Washington

$25/hr RemoteInternship

USA Rare EarthNASDAQ: USAR: Manufactures rare earth magnets and processes critical minerals.

0+ YOEMS student in CS/Data Science/SE/Applied Math; shipped AI product experience; Python proficient; LLM framework experience; SQL/Pandas; strong software engineering; strong written communication.

Python, LangChain, LlamaIndex, OpenAI API, Anthropic API, Haystack, SQL, Pandas

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Forward Deployed AI Engineer

Hoboken, New Jersey, United States

$35-$45/hr OnsitePart Time

Stevens Institute of Technology: Private research university specializing in engineering and technology innovation.

Bachelor’s or Master’s in CS/Data Science/AI; experience with AI tools, Python, APIs, web full-stack; data pipelines; databases; BI; collaboration.

Python, APIs, Web Development, JavaScript, TypeScript, React, REST/GraphQL, Databases, SQL, NoSQL, CI/CD

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2mo

Software Engineer - Forward Deployed

New York, New York, United States

$200k-$240k/yr RemoteFull Time

Arcesium: Cloud-native data and operations platform for financial institutions.

5+ YOE5+ years delivering data-centric software solutions; strong Java, Python, TypeScript, SQL; cloud experience; client-facing; ability to deliver quickly.

Java, Python, TypeScript, SQL, Cloud platforms

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1mo

Senior Backend / Infrastructure Engineer

New York City, New York, United States

$190k-$260k/yr HybridFull Time

Brellium: AI platform for healthcare clinical compliance and chart auditing.

5+ YOE5+ years backend/infrastructure, Python and AWS, data pipelines, distributed systems, reliability and performance.

Python, AWS, Databases, APIs, Messaging/Queues

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2mo

Senior Software Engineer

New York City or United States

$130k-$170k/yr HybridFull Time

Octane: Providing digital financing for recreational vehicle and lifestyle purchases.

5+ YOE5+ years of software engineering experience; proficiency in Python/Java/C#/JavaScript; end-to-end solution design; mentoring; strong communication.

Python, Django, PostgreSQL, Java, C#, JavaScript

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2mo

Senior Data Engineer

Austin or New York City or Salt Lake City

HybridFull Time

Setpoint: Software platform for asset-backed lending and capital markets infrastructure.

5+ YOE5+ years data or full-stack engineering; Python/Flask, TypeScript/React; on-call experience; ownership mindset; AI/LLM familiarity.

Python, Flask, TypeScript, React, Tailwind CSS, Data Warehouses, AI tools

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Staff Platform Engineer, Platform Development

Denver or San Antonio or Brooklyn

$190k-$260k/yr HybridFull Time

Simplesense: Software platform protecting critical infrastructure from cyber attacks.

7+ YOE7–15 years building scalable, secure cloud systems; strong AWS, Terraform/CFN, NodeJS or Python; DoD clearance eligibility; US citizenship.

AWS, Terraform, CloudFormation, Node.js, Python, VPC, Route53, Datadog, Splunk

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Staff Engineer - AI

New York, New York, United States

$225k/yr HybridFull Time

Wonder: Provides a multi-restaurant food delivery and meal kit platform.

8+ YOE8+ years software engineering; 3+ years building AI/ML in production; distributed systems; AI agents/LLM; startup experience; Python/TypeScript; strong system design; CS/Data Science degree or equivalent.

Python, TypeScript, ML tooling, AI agents, vector search, RAG

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1mo

Software Engineer, Full Stack

New York, New York, United States

$220k/yr OnsiteFull Time

Sweep: Providing a cyber-physical defense layer for high-stakes security environments.

5+ YOE5+ years shipping production systems; polyglot JS, Python, Rust/Go; cloud (AWS/GCP); experience with LLMs and vector databases; U.S. Person status.

JavaScript, Python, Rust, Go, AWS, GCP, LLMs, Vector databases

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1mo

Software Engineer, Early Career

Chicago or New York

$150k-$200k/yr OnsiteFull Time

Aquatic Capital Management: Quantitative investment manager developing proprietary systematic trading strategies.

0+ YOEBachelor's in CS/Software Eng; 0-3 years experience; Python or C++; knowledge of event-driven architectures and distributed systems; strong quantitative skills preferred.

Python, C++

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Software Engineer - Delivery Platform

New York City, New York, United States

$111k-$178k/yr HybridFull Time

Squarespace: Software platform for building websites and managing online businesses.

3+ YOE3+ years backend or platform engineering; experience with CI/CD pipelines; Docker and Kubernetes; GitOps tools; Go/Python/Java; cloud experience; Agile; troubleshooting.

Go, Python, Java, Docker, Kubernetes, GitOps (Argo CD), Flux, Helm, Drone, Jenkins, GitHub Actions, Docker, Terraform, Google Cloud, AWS, Azure

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1mo

Senior Product Engineer

London or New York City

£90k-£200k/yr HybridFull Time

Slingshot AI: Provides an AI-powered platform for personalized mental health support.

Senior Product Engineer with experience across mobile/web, Dart/Flutter, Kotlin, Python, Next.js/TypeScript, Rust; fast-paced, owner mindset.

Dart/Flutter, Kotlin, Python, Next.js/TypeScript, Rust, gRPC, Google Cloud Platform, Kubernetes, Cloud Run

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Applied AI Engineer

San Francisco or New York City or Barcelona

$180k-$240k/yr HybridFull Time

Rillet: AI-native ERP software for finance and accounting teams

3+ YOE3+ years backend/API/cloud infra; 2+ years production AI systems; Python; experience with LLMs, RAG; strong product sense.

Python, LLM, RAG, APIs, Cloud

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Staff Product Engineer

San Francisco or New York

HybridFull Time

Brisk Teaching: AI-powered browser extension for K-12 teacher productivity and personalization.

8+ YOESenior frontend-focused role building React/TypeScript, with backend collaboration (Python/Flask) and observability; strong emphasis on performance, accessibility, and design systems.

React, TypeScript, Python, Flask, Datadog

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1mo

Software Engineer Intern

New York City, New York, United States

HybridInternship

DoubleVerifyNew York Stock Exchange: DV: Provides software for measuring and authenticating digital media quality.

Pursuing CS degree; strong data structures/algorithms; proficient in C++, Java, Scala, or Python; SQL/RDMS knowledge; interest in distributed systems.

C++, Java, Scala, Python, SQL, RDMS

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2mo

Senior Fullstack Engineer

San Francisco or New York City

$210k-$350k/yr OnsiteFull Time

Giga: Enterprise voice AI agents for automated customer support.

4+ YOE4+ years of fullstack experience; strong frontend (TypeScript/React) and backend (Python or similar); product-minded; ability to own features end-to-end.

TypeScript, React, Next.js, AWS, Modal, Kubernetes, Postgres, Python, Django, FastAPI, Node.js

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Senior Software Engineer

New York, New York, United States

$180k-$200k/yr HybridFull Time

Kharon: Provides a data platform for sanctions and compliance risk.

8+ YOE8+ years software engineering with 2+ years leadership; strong Python/Java; SQL/data warehousing; API experience; containerization; cloud (AWS).

Python, Java, React, Vue, AWS, Airflow, DBT, Snowflake, Databricks, BigQuery, Docker, Kubernetes, Salesforce, REST, GraphQL

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2mo

Software Engineer | Government

Boston or New York City

$180k-$235k/yr OnsiteFull Time

Gecko Robotics: Builds wall-climbing robots and AI software for infrastructure inspection.

5+ YOE5+ years in production systems; BS in CS/CE/EE/Robotics or equivalent; proficiency in Java, C++, Python, JavaScript; cloud experience (GCP/AWS/Azure); API design; strong communication; travel to other offices occasionally.

Python, TypeScript, React, Google Cloud, Java, C++, JavaScript

3mo

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3mo

Senior Backend Software Engineer

San Francisco or Boston or Denver or New York

$160k-$207k/yr HybridFull Time

Semgrep: Developer of a code analysis and application security platform.

3+ YOEBackend engineering with experience in distributed systems, databases, and APIs. Familiarity with Python, SQLAlchemy, and cloud deployments preferred.

Typescript, Python, Flask, SQLAlchemy, Kubernetes, AWS, React

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Senior Full Stack Software Engineer (AI Applications)

Yonkers or California or New York or Texas

$100k-$140k/yr HybridFull Time

Consumer Reports: Tests products and publishes ratings for consumer advocacy.

5+ YOE5+ years of production full-stack development with Python, JavaScript, and SQL/NoSQL; Bachelor's in CS/Engineering; experience deploying on cloud platforms and AI/ML services.

Python, JavaScript, SQL, NoSQL, FastAPI, Django, Node.js, Databricks, AWS SageMaker, React, Next.js, TailwindCSS, AWS, GCP, Azure, CI/CD, APIs, Data APIs, Model endpoints, RAG pipelines

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Principal Engineer, Agentic Engineering

New York, New York, United States

$200k-$325k/yr OnsiteFull Time

BullishNYSE: BLSH: Provides institutional digital asset trading and market information services.

8+ YOE8+ years of engineering experience; extensive work with LLMs and agent systems; backend and distributed systems aptitude; Python; LLMOps; experience with agent frameworks like LangChain/LlamaIndex.

Python, LangChain, LlamaIndex, OpenAI, Anthropic, Google APIs, LLMOps

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1mo

Staff Engineer - Platform Engineering

Scottsdale or Chicago or San Francisco or New York

$145k-$223k/yr HybridFull Time

Early Warning Services: Operates payment and risk solutions for the financial industry.

8+ YOE8+ years in software/platform engineering; CI/CD, Kubernetes, Terraform; GitLab/Harness/Vault/Artifactory; on-prem and AWS; Python/Java/JavaScript/Shell; strong collaboration.

GitLab, Harness, Vault, Artifactory, Kubernetes, Docker, Podman, Terraform, AWS CloudFormation, Python, Java, JavaScript, Shell

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1mo

Senior Vice President, Full-Stack Engineer

New York or Jersey City or Pittsburgh or Lake Mary

$102k-$195k/yr OnsiteFull Time

BNYNYSE: BK: Global institution managing and servicing financial assets worldwide.

10+ YOE10-14 years software development experience; strong Python/JavaScript, SQL/MongoDB; REST APIs; DevOps; storage infra; experience in financial services preferred.

Python, Django, Flask, REST API, JavaScript, HTML, CSS, SQL, MongoDB, VS Code, PyCharm, Git, CI/CD, Ansible, Jira, Confluence, Windsurf, Docker, Kubernetes, Jest, Jasmine, Karma

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Senior Software Engineer

New York, New York, United States

$190k/yr RemoteFull Time, Temporary

Zeta GlobalNYSE: ZETA: Provides an AI-powered marketing platform for enterprise customer engagement.

5+ YOE5+ years software engineering; proficient in Java, Ruby, Python/J2EE; ETL, BI, campaign tools; REST/SOAP APIs; MySQL; Kafka, Elasticsearch; NoSQL; data/ETL pipelines; BS in Electrical and Computer Engineering or Computer Science.

Java, Ruby, Python, J2EE, ETL, Business Intelligence, Campaign Management, SOAP, REST, MySQL, Kafka, Elasticsearch, NoSQL, Aerospike, Thrift, CI, AWS

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BI Developer

Malvern or New York

$145k-$165k/yr OnsiteFull Time

Customers BankNYSE: CUBI: Provides commercial and consumer banking and digital financial solutions.

6+ YOE6+ years BI development; expert Power BI; SQL/Snowflake/Databricks; Python data tools; banking/financial services familiarity; Agile experience; certifications a plus.

Power BI, SQL, Snowflake, Databricks, Fabric, Python, Pandas, Polars, DuckDB

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Simulation Infrastructure Engineer

New York City, New York, United States

HybridFull Time

Bedrock Robotics: Automates heavy construction machinery with AI retrofit kits.

6+ YOE6+ years of professional software engineering, strong Python, cloud infra expertise, deployment and service integration experience, generalist platform mindset, and strong communication.

Python, AWS, gRPC, Kubernetes, Ray, Spark, CI/CD, Data pipelines

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1mo

Test Automation Engineer

Greenwich, Connecticut, United States

HybridFull Time

Interactive BrokersNasdaq: IBKR: Operates an automated global electronic trading platform for financial assets.

3+ YOE3+ years software engineering with strong Python and testing skills; experience with unit testing frameworks; Bachelor's degree in a quantitative field; strong communication and collaboration.

Python, pytest, unittest, git

2mo

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2mo

Embedded Software Engineer

Farmington, Connecticut, United States

$93k-$116k/yr OnsiteFull Time

OtisNYSE: OTIS: Manufactures, installs, and services elevators and escalators worldwide.

Bachelor's in Electrical or Software Engineering; proficiency in C/C++, Python/Java; embedded software for real-time elevator controls; strong problem-solving and collaboration.

C, C++, Python, Java, Matlab, Simulink, .NET, Visual Studio, C#

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Full-Stack Engineer

San Francisco or New York City

$260k-$300k/yr OnsiteFull Time

Cognition: Developing autonomous AI agents for software engineering.

Strong backend in Python; TypeScript/React frontend; full-stack experience; product-minded; fast, high-quality delivery; curious about AI agents.

Python, TypeScript, React, APIs, Data pipelines

33m

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33m

Senior Software Development Engineer

Menlo Park or Brooklyn

$150k-$250k/yr OnsiteFull Time

Vijil: Infrastructure to build, test, and operate trusted AI agents.

10+ YOE10+ years backend software engineering; cloud infra, CI/CD, production ops; Python backend; experience with agentic AI systems; strong architecture and production readiness.

Python, FastAPI, Pydantic, GitHub Actions, AWS CodeBuild, Docker, Kubernetes, Helm, PostgreSQL, OpenTelemetry, OpenTelemetry

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Software Engineer

Melville, New York, United States

$115k-$150k/yr OnsiteFull Time

H2M architects + engineers: Provides professional architectural, engineering, and environmental consulting services.

3+ YOESoftware development with backend, data warehousing, SQL, BI, and AI capabilities; experience with BST Global or similar ERP; Python, C, Ruby, and web development.

Visual Studio, C, Python, Ruby, SQL, Power BI, BST Global, APIs, Git

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Lead Software Engineer, Kubernetes

New York City or Florida or Virginia or California

$140k-$175k/yr RemoteFull Time

Live Nation EntertainmentNYSE: LYV: Promotes live concerts, operates entertainment venues, and sells tickets.

Backend software engineer with Kubernetes, Go/Rust/Python, Terraform, CI/CD, observability; experience in distributed systems.

Kubernetes, Go, Rust, Python, Terraform, Pulumi, Ansible, GitLab CI/CD, Prometheus, Grafana, Terraform, CI/CD, Observability

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Software Engineer - Machine Learning

New York, New York, United States

$126k-$210k/yr HybridFull Time

Meltwater: Global media intelligence and social analytics platform for businesses.

2+ YOE2+ years in software or ML engineering; strong fundamentals in system design, data pipelines, APIs; proficient in Python or similar; interest in Generative AI; CS/SE degree or equivalent.

Python, Elasticsearch, Quickwit, Vespa, Terraform, Kubernetes, CI/CD

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Software Engineer, AI Automation

Brooklyn, New York, United States

$150k-$190k/yr OnsiteFull Time

Paces: Software to accelerate renewable energy and power project development.

3+ YOE3+ years of experience building data-intensive software; experience deploying AI agents in production; proficient in Python, SQL; strong problem solving; able to work independently and in a team.

Python, SQL, Agent SDK, Messages API, LangGraph

2mo

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2mo

Software Engineer Intern

San Francisco or Los Angeles or New York City

$35-$45/hr HybridInternship

Tatari: Provides a platform to buy and measure TV advertisements.

0+ YOEPursuing CS degree, 2+ years of college, Python, SQL, math and stats, AI/ML project experience, 10-week commitment, able to work independently.

Python, SQL, MySQL, PostgreSQL, AI/ML tools

2mo

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2mo

Staff Software Engineer

New York, New York, United States

$200k-$250k/yr OnsiteFull Time

Tabs: AI-native revenue platform for finance and accounting teams

10+ YOE10+ years of professional software engineering, leading large-scale design, expertise in TypeScript or Python, strong CS fundamentals, and ability to operate in ambiguity and fast pace.

TypeScript, Python