153 api engineer jobs at 58 companies in Guilford, CT
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Full Stack Developer (.NET API) - Senior Software Engineer
Stamford, Connecticut, United States
OnsiteFull Time
6+ YOEBachelor's in computer science or related field, 6+ years full-stack experience with .NET Core API, Angular and SQL Server, strong C#/Web API and front-end (HTML/CSS/JavaScript) skills, REST API experience, communication and leadership abilities.
Angular, .NET Core, SQL Server, C#, Web API, HTML, CSS, JavaScript, Microsoft Azure, Git
1mo
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Circle Lead Engineer (CLE) - Personal Insurance
Hartford, Connecticut, United States
$154k-$254k/yr OnsiteFull Time
7+ YOE2+ MgmtBachelor's in CS or related STEM,7+ years software engineering,2+ years technical leadership,expertise in Python,JavaScript/TypeScript,React,AWS/CDK,Terraform,Jenkins,API development,Github,and AI/GenAI.
Python, JavaScript, TypeScript, React, AWS, CDK, Terraform, Jenkins, API Development, GitHub, AI/GenAI
1mo
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Agentic Solutions Engineer
Shelton, Connecticut, United States
HybridFull Time
3+ YOE3+ years backend/full-stack engineering with expert Python and strong TypeScript/React skills; experience building REST/GraphQL APIs, Django/DRF, Celery/Temporal, PostgreSQL, MCP protocol familiarity, and cloud (AWS/GCP).
Model Context Protocol (MCP), REST, GraphQL, Python, TypeScript, JavaScript, Django, Django REST Framework (DRF), React, React-Admin, FastAPI, Celery, Temporal, Pydantic, httpx, pytest, Node.js, PostgreSQL, Snowflake, WebSockets, SSE, OAuth2, JWT, OpenAPI, Swagger, Redoc, AWS, GCP, Lambda, Cloud Run, S3, GCS, Docker, GitHub Actions, Flowise, LangChain, Claude, Anthropic, GA4, Meta, Google
1mo
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Sr AI Machine Learning Engineer
Hartford or Charlotte or Columbus or Chicago
$117k-$176k/yr HybridFull Time
5+ YOEMaster's degree or 5+ years' equivalent experience; US work authorization required. Experience with AWS/GCP, cloud deployments, API services, CI/CD (Jenkins), IaC (CloudFormation/Terraform), Python, git, Unix, MLOps, and workflow automation (Airflow/Autosys).
MLOps, AWS, GCP, API, Jenkins, CloudFormation, Terraform, Unix, git, Python, Apache Airflow, Autosys
5d
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Mainframe Developer
Hartford, Connecticut, United States
$140k-$166k/yr HybridFull Time
15+ YOE5+ Mgmt15+ years in software architecture with 5+ years leading mainframe modernization; deep legacy/mainframe and cloud architecture experience; GenAI and leadership skills; Java, API, Angular, AWS expertise.
COBOL, JCL, CICS, VSAM, DB2, Java, Spring Boot, Spring Cloud, REST, GraphQL, Angular, AWS, Docker, Kubernetes, ECS, EKS, Terraform, CloudFormation, Claude, LLM, CI/CD
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Development Engineer Software
Danbury, Connecticut, United States
$105k-$120k/yr OnsiteFull Time
5+ YOEBSc/MSc in CS/EE or related,5+ years leading embedded software projects,experience with RTOS,Matlab/Simulink,Redfish REST API and data center protocols,knowledge of OCP security standards.
RTOS, Matlab, Simulink, Redfish REST API, Open Compute Project (OCP)
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Sr. Engineer, Salesforce
Stamford, Connecticut, United States
$95k-$125k/yr RemoteFull Time
5+ YOEBachelor's in IT/CS/Engineering,5+ years Salesforce experience,experience with Data Cloud/Sales/Service/Marketing Clouds,Flow,Apex,LWC,APIs,integration and Agile experience;ability to travel;US residency required.
Flows, Apex, Lightning Web Components, Data Cloud, Sales Cloud, Service Cloud, Marketing Cloud, APIs, Agile/Scrum
2mo
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Sr. Software Engineer (Hybrid)
Hartford or Charlotte or Short Hills
$123k-$157k/yr HybridFull Time
5+ YOE5+ years of experience designing and developing complex applications; Bachelor's preferred in CS/Engineering; strong .NET/C#, API, SQL; cloud, Azure, DevOps, and leadership skills.
C#, .NET, API development, SQL, Azure, Container Apps, API Management, App Gateway, Key Vault, App Services, Logic Apps, SQL MI, Infrastructure-as-Code, Bicep, ARM, Terraform, Angular, SAFe
1d
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AI Platform Engineer (Google Cloud Platform)
Charlotte or Columbus or Hartford
$117k-$176k/yr HybridFull Time
8+ YOEBachelor's degree in a technical field, 8+ years building enterprise software or platforms, 3+ years with Terraform, and experience with GCP, BigQuery, Cloud Functions, AI Platform, API Gateway, GKE, and Docker.
Python, Terraform, AWS, Google Cloud Platform, Microsoft Azure, BigQuery, Cloud Functions, AI Platform, API Gateway, GKE, Docker, CI/CD, LangChain, LlamaIndex, LangSmith, LangGraph, Google Agent Development Kit, HNSW, ANN, KNN
3mo
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AI Validation Engineer, Macro Technology
New York or Stamford
$140k-$200k/yr OnsiteFull Time
8+ YOE8+ years in trading tech, QA, validation, or software delivery; strong SQL/data analysis; Playwright or similar automation; AI tooling in delivery lifecycle; excellent communication; ethical standards.
Playwright, SQL, APIs, Logs
1mo
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Engineer
Shelton, Connecticut, United States
$103k-$128k/yr OnsiteFull Time
2+ YOE2–5 years software engineering experience; proficiency with JavaScript, Node.js, ReactJS, and React Native; knowledge of REST APIs, databases, OOP, and version control; strong problem-solving and collaboration skills; bachelor's degree or equivalent.
JavaScript, Node.js, ReactJS, React Native, REST APIs, CI/CD
4w
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Sr Software Engineer
Hartford or St. Paul
$139k-$230k/yr HybridFull Time
6+ YOEBachelor's in CS or STEM, 6+ years software engineering, leadership experience, cloud and API development experience, proficiency with CI/CD, observability, databases, and automated testing.
Claude, GitHub Co-Pilot, AWS (Serverless/EKS), AWS CDK, Terraform, React.js, Node.js, JavaScript, TypeScript, Python, Kafka, DB2, MySQL, PostgreSQL, MongoDB, DynamoDB, Dynatrace, ELK, OpenTelemetry, NUnit, XUnit, Moq, Jest, Cypress, Git, GitHub, CloudBees Jenkins, Jenkins Open Source, Microsoft Azure, Microsoft Azure DevOps, OAuth 2.0, OpenID Connect (OIDC), Jira, Rally
3w
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Senior Financial Data & Analytics Engineer
Stony Brook, New York, United States
$110k-$120k/yr OnsiteFull Time
5+ YOEBachelor's in related field,5+ years in data/data engineering or financial analytics in healthcare or enterprise,experience with SQL,data warehouse design,ETL/ELT,API integration,Tableau,and healthcare financial metrics.
SQL, PeopleSoft, Tableau, Snowflake, Databricks, Azure, AWS, Python, R, Power BI, Excel, API
3w
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Senior Sales Engineer - Enterprise
Boston or Charlotte or Hartford or New Haven or New York or Raleigh or United States
$194k-$291k/yr HybridFull Time
5+ YOE5+ years in software pre-sales, hands-on SQL and technical skills (Python, APIs, R), track record closing enterprise deals, strong communication and business acumen.
Python, SQL, APIs, R, Google Analytics 4, Adobe Analytics, Mixpanel, Tableau, Looker, Power BI
3w
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VP, Staff Cryptography Engineer
Alpharetta or Orlando or Chicago or Costa Mesa or Orlando or New York City or New York City or Charlotte or Stamford or Alpharetta or West Chester
$135k-$230k/yr HybridFull Time
5+ YOE3+ MgmtBachelor's or equivalent with 5+ years experience; 3+ years in cloud, cryptography, and DevSecOps; experience with PKI, key/secrets management, API security, and regulatory frameworks; strong communication and leadership skills.
API, AWS Certificate Manager, KMS, Private CA, Secrets Manager, Azure Key Vault, Cloudera, Cloudbees/Jenkins, CI/CD, GCP Cloud KMS, GCP Secret Manager, Git/Github, Go, HashiCorp Vault, Java, Linux, Perl, PKI, Python, Terraform
1d
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Sr. IAM Engineer
Shelton, Connecticut, United States
$119k-$149k/yr OnsiteFull Time
7+ YOE7+ years in IAM or security engineering, deep Okta, OAuth, OIDC, SAML, SCIM, Active Directory, Entra ID, API security, scripting, CI/CD, and HRIS identity automation expertise; bachelor's degree or equivalent.
Okta, Universal Directory, Okta Workflows, SAML 2.0, OIDC, WS-Federation, SCIM 2.0, Microsoft Entra ID, Active Directory, Microsoft 365, ServiceNow, Jamf, AWS IAM Identity Center, Ceridian Dayforce, CrowdStrike Falcon Next-Gen SIEM, CrowdStrike Falcon Identity Protection, PowerShell, Python, bash, Git, Terraform, Azure Pipelines, GitHub Actions, SailPoint, Saviynt, Omada, NIST SP 800-63, NIST SP 800-207, OAuth 2.0, PKCE, OWASP API Security Top 10, Intune
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Principal Software Development Engineer
Wellesley or Hartford or New York City or Arkansas or Vermont or Connecticut or Georgia or Texas or Minnesota or Michigan or Maine or Wisconsin or New York or District of Columbia or Kansas or Indiana or New Jersey or Nebraska or Rhode Island or Louisiana or Tennessee or Kentucky or Mississippi or Ohio or Oklahoma or West Virginia or Massachusetts or Maryland or South Carolina or Alabama or Missouri or Virginia or Illinois or North Carolina or Florida or New Hampshire or Delaware
$144k-$288k/yr HybridFull Time
10+ YOE10+ years software experience, 7+ years leading enterprise solution design, cloud-native microservices on GCP, Java/Python/Node.js, API design, strong communication and stakeholder skills.
Java, Python, Node.js, Angular, ReactJS, Google Cloud Platform (GCP), REST, APIs, CI/CD, SAFe
1mo
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Middle Office Software Developer
Norwalk or Rowayton
$115k-$200k/yr OnsiteFull Time
5+ YOEBachelor's in computer science, 5+ years software development in financial services, experience with C#, Windows and web frameworks, SQL Server, messaging/SOA/APIs, Agile and unit/integration testing.
C#, Windows Forms, WPF, ASP.NET MVC, Angular, JavaScript, Web API, SQL Server, MOM, SOA, APIs, Agile, Coding agents and AI-assisted development tools
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Principal Software Engineer
Warsaw or Fridley or Mounds View or Brooklyn Park or Fort Worth or North Haven or Jacksonville or Boston or Lafayette
$153k-$229k/yr OnsiteFull Time
5+ YOEBachelor's + 7+ years software engineering or advanced degree + 5+ years; experience designing, developing, testing and deploying scalable, reliable software for manufacturing; leadership, mentoring, and cross-functional collaboration.
Ignition, deviseWISE, Azure, AWS, Docker, Kubernetes, Jenkins, Terraform, React, Angular, Node.js, ASP.NET, HTML5, CSS3, WebAPI, Microservices Architecture, Test-Driven Development, Agile & Scrum, CI/CD Pipelines, RESTful API Design, Java, C++, NET, Scala, Lua, Python, SQL
1d
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Senior Data Engineer
Mesa or Endicott or Wallingford or China or Turkey
$100k-$130k/yr OnsiteFull Time
6+ YOEBachelor's degree in a related field and 6+ years of data engineering experience. Requires production ETL/ELT pipelines, SQL Server, data modeling, reporting, analytics, and data quality expertise.
Microsoft SQL Server, T-SQL, Power BI, SQL Server Reporting Services, SharePoint, ERP, APIs
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