123 junior java developer jobs at 78 companies in Fairfield, CT

PromotedHiringCafe
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
2mo
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Junior Software Engineer
New York, New York, United States
HybridFull Time
TrickCV
TrickCV: A software that develops tools to tailor CVs for job seekers.
0+ YOEBachelor's degree in CS/Software Eng; knowledge of Java, Python, or C++; basic SDLC understanding; team collaboration; Git experience a plus.
Java, Python, C++, Git
1mo
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Junior Software Developer
Sofia or Dresden or Singapore or New York City or Vermont
HybridFull Time
GlobalFoundries
GlobalFoundriesNASDAQ: GFS: Manufacturer of semiconductors and provider of wafer fabrication services.
0+ YOEB.S. or M.S. in CS or related field, 0–2 years relevant experience, proficiency in Python (Pydantic, pytest, pandas, FastAPI, lark, sly, nicegui), Tcl/Bash shell scripting, Java, git and DevOps concepts; familiarity with Azure DevOps preferred.
Python, Pydantic, pytest, pandas, FastAPI, lark, sly, nicegui, Tcl, Bash, git, Java, Azure DevOps
4w
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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
3w
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Junior AI Engineer
New York, New York, United States
$100k-$120k/yr OnsiteFull Time
eClerx
eClerxNational Stock Exchange of India: ECLERX: Provides business process management and data analytics services globally.
2+ YOE2+ years building production software; strong Python; foundational LLM knowledge; practical GenAI experience (prompting, tool-calling, agentic workflows); familiarity with Git, REST APIs, JSON/SQL.
Python, Java, TypeScript, JavaScript, Git, REST APIs, JSON, SQL, FAISS, LangGraph, LangChain, PyTorch, TensorFlow, JAX, React, Next.js, FastAPI
1mo
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Software Engineer (Junior to Mid Level)
Gothenburg or New York City
HybridFull Time
Burt Intelligence
Burt Intelligence: SaaS analytics platform for digital advertising sales and operations.
Strong programming ability, curiosity, and problem solving; familiarity with Git, Ruby, Python, Java, AWS, SQL, and TypeScript is beneficial; ability to learn quickly and work cross-functionally on data and product problems.
Git, Ruby, Python, Java, AWS, SQL, TypeScript
1w
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Junior Solutions Engineer - Partnerships, Ads
New York, New York, United States
$123k-$256k/yr OnsiteFull Time
TikTok
TikTok: Global short-form video hosting and social media platform.
1+ YOEBachelor's in CS or related,1+ years shipping production code,knowledge of API and backend design,familiarity with Python,Go,Java,C/C++,strong communication and stakeholder collaboration skills.
Python, Go, Java, C/C++
2w
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Junior Full-Stack Developer (New York, NY, US)
New York, New York, United States
$60k-$65k/yr OnsiteFull Time
Capgemini
CapgeminiEuronext Paris: CAP: Provides global IT consulting and digital transformation services.
Bachelor's in computer science required; hands-on experience with Java, Spring Boot, and Angular; knowledge of HTML5/CSS3; familiarity with React, unit testing, microservices concepts, and Agile; willing to relocate.
Java, Spring Boot, Angular, React, HTML5, CSS3
14h
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Software Developer - Fixed Income Technology (Java)
New York, New York, United States
$125k-$160k/yr OnsiteFull Time
Jefferies
JefferiesNYSE: JEF: Global investment banking and capital markets services provider.
2+ YOEBachelor's in CS or related,2+ years experience,proficiency with Java and Linux,experience with messaging/event-driven systems and distributed caching,strong problem-solving and communication skills.
Java 17, Linux, AMPS, Atlassian, GitHub Actions, Oracle, Redshift, KDB+, AWS, Docker, Kubernetes, ArgoCD, AI Agents / LLM Platforms, Kafka, Solace, Ion, Hazelcast
1w
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Associate, Developer
New York, New York, United States
$110k-$130k/yr OnsiteFull Time
Newmark
NewmarkNASDAQ: NMRK: Commercial real estate brokerage and property management services.
2+ YOEBachelor's in CS/IT or related plus 2 years developer experience in financial services; experience with Java, Spring Boot, Django, React, Python, SQL, HTML5/CSS3, AWS S3, Jenkins, Git, CI/CD, REST APIs and microservices.
Java, Spring Boot, Django, React, JavaScript, Python, SQL, HTML5, CSS3, Freemarker, Selenium, Cron Jobs, Spring Scheduler, Keycloak IAM, LDAP, Role Based Access Control (RBAC), Single Sign-On (SSO), Redis, Guava Cache, Parallel Processing, Spring Performance Libraries, REST APIs, Microservices, Data Lineage, Data Governance, AWS S3, Jenkins, Git, CI/CD, Agile, Scrum, Unit Testing, QA Automation, Automation, System Design, Performance Optimization, Enterprise Integration, Reporting Pipelines, Stress-testing workflows, Legacy System Migration, Process Optimization, FIX
2w
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Engineer II
North America or South America or New York City
RemoteFull Time
Correlation One
Correlation One: Workforce training and assessments for AI and data science.
2+ YOE2+ years professional software development experience; proficiency in Python or Java; experience with Postgres, version control, code review, automated testing; strong communication skills for remote, async teams.
Python, Java, Postgres, React, FastAPI, Spring Boot, Kubernetes, GCP, GHA
4d
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AI Engineer 4A
New York City, New York, United States
$50k-$63k/yr HybridFull Time
Genpact
GenpactNYSE: G: Provides business process management and digital transformation services.
Bachelor's in CS or related field, exposure to software development or generative AI through projects/internships, knowledge of Python/Java, SQL, REST APIs, Git, cloud platforms, and SDLC.
Python, Java, SQL, REST APIs, Git, Linux, AWS, Azure, RAML, Large Language Models (LLMs), Agentic AI
1w
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Associate - Full Stack Developer
New York, New York, United States
$67k-$96k/yr HybridFull Time
New York Life Insurance
New York Life Insurance: Providing life insurance, annuities, and long-term investment solutions.
1+ YOE1+ years integration development experience using MuleSoft, Java, Spring Boot and Python; REST API design; DB and messaging integration; Git and JIRA familiarity; Bachelor's degree in CS or related field.
MuleSoft Anypoint Platform, Spring Boot, Java, Python, Oracle, DynamoDB, PostgreSQL, AWS RDS, OpenAI, Claude, Kafka, Amazon MQ, Git, JIRA
1mo
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Senior AI Engineer
Sunnyvale or San Francisco or Bellevue or New York City
$139k-$229k/yr HybridFull Time
LinkedInNASDAQ: MSFT: Professional social network for career development and job recruitment.
2+ YOEBA/BS in CS or related (or equivalent experience); 2+ years software design/development and programming (Java, Python); 2+ years machine learning, data mining, or NLP; strong communication and critical thinking.
Java, Python, SVN, GIT, ant, maven, Hadoop, Pig, MapReduce, Lucene, SOLR
2mo
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Front-End Senior Engineer
New York, New York, United States
$136k-$175k/yr OnsiteFull Time
TP ICAP
TP ICAPLondon Stock Exchange: TCAP: Provides market infrastructure and data solutions for financial markets.
Design, develop, and maintain front-end applications; collaborate with designers; mentor juniors; ensure code quality; integrate APIs.
React, Angular, Vue.js, TypeScript, Redux, Java, Spring Boot, JDBC, Maven, REST API, Git, Jira, Solace Event Broker
1w
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Associate - Full Stack Developer
New York City, New York, United States
$67k-$96k/yr HybridFull Time
New York Life
New York Life: Provides life insurance, retirement income, and investment solutions.
1+ YOE1+ years integration development experience with MuleSoft, Java, Spring Boot, Python; RESTful API design; databases (Oracle, DynamoDB, PostgreSQL, AWS RDS); messaging (Kafka, Amazon MQ); Git and JIRA; GenAI/LLM API familiarity.
MuleSoft Anypoint Platform, Spring Boot, Java, Python, Oracle, DynamoDB, PostgreSQL, AWS RDS, OpenAI, Claude, Kafka, Amazon MQ, Git, JIRA
1mo
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Research Developer – New Grad
Amsterdam or Chicago or London or New York City
OnsiteFull Time
Headlands Technologies
Headlands Technologies: A global proprietary trading firm utilizing quantitative algorithms.
Degree in a technical field required; strong statistics and ML experience; software development skills in Java, C++, or Python; interest in systematic trading; internship experience preferred; collaborative and results-focused.
Java, C++, Python
6d
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Associate Backend Engineer
New York, New York, United States
$95k-$115k/yr HybridFull Time
Eulerity
Eulerity: AI-driven marketing automation for franchise and multi-location brands.
1+ YOE1–3 years backend development experience with at least 1 year in Java, experience using AI agents/LLMs, familiarity integrating third-party APIs, strong communication and problem-solving; based in NYC tri-state and available full-time.
Java, GitHub Copilot, Anthropic, Google, OpenAI, Claude, Cursor, LLMs
2w
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Software Engineer, Full Stack, Level 4
Los Angeles or New York City or Bellevue or Seattle or San Francisco or Palo Alto or Santa Monica
$157k-$235k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Provides visual messaging software and augmented reality wearable devices.
2+ YOEBachelor's degree or equivalent, 2+ years post-degree software development, proficiency in JavaScript/TypeScript, HTML, CSS and one or more backend languages (Java, Golang, NodeJs, Python), front-end frameworks, unit testing, and full-stack web development.
JavaScript, TypeScript, HTML, CSS, Java, Golang, NodeJs, Python, React, Angular, Vue, WebGL, Canvas, WebAssembly, Service workers, GraphQL, NoSQL, Memcache, Redis, Kubernetes, Google, AWS
1w
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Technology Software Engineer Rotation Program - Analyst
New York, New York, United States
$80k-$95k/yr OnsiteFull Time
iCapital
iCapital: A global fintech platform for alternative investment marketplace access.
1+ YOEBachelor's in Software Engineering, 1+ years web application development, familiarity with React/Python/Node.js/Java a plus, understanding of SSO, database modeling experience, strong communication and problem-solving.
Scala, Ruby, Node.js, Python, React, Java
2mo
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Developer Intern
Hauppauge, New York, United States
$20/hr OnsiteMultiple Commitments Available
Custom Computer Specialists
Custom Computer Specialists: Provides managed IT and cybersecurity services for organizations.
Pursuing or recently completed degree in CS/SE/IS; strong Java; SQL knowledge; detail-oriented; good communication; on-site 20 hrs/week; 10–12 weeks; starting May 2026; SSRS and MS SQL Server preferred.
Java, SQL, SSRS, MS SQL Server, REST APIs