Explore 180+ java developer jobs from 72 hiring companies in Killingly Center, CT, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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Java Developer Jobs

Cognizant

MojoTech

Peraton

Onsite

Hybrid

About the roleAs an Automation Tester with Hammer/Cyara and Conversational AI Testing experience, you will make an impact by designing, executing, and enhancing automated testing solutions that ensure high‑quality digital experiences—specifically across conversational AI, voice interactions, and telephony platforms. You will be a valued member of the QA Engineering team and collaborate closely with developers, product owners, business analysts, and automation architects to enable fast, reliable, and scalable product delivery.In this role, you will: •    Develop, maintain, and optimize test automation frameworks using tools such as Hammer On Demand, Cyara, and Selenium. •    Conduct automation and functional testing for conversational AI experiences, including chatbots and voice assistants. •    Execute functional, regression, integration, performance, backend API, and database testing. •    Participate in Agile ceremonies and collaborate with cross‑functional teams to ensure high‑quality software releases. •    Integrate automated tests into CI/CD pipelines, ensuring continuous quality validation. Work model:At Cognizant, we strive to provide flexibility wherever possible, and we are here to support a healthy work-life balance though our various wellbeing programs. Based on this role’s business requirements, this is an onsite position requiring 5 days a week in a client or Cognizant office in Hartford, CT. The working arrangements for this role are accurate as of the date of posting. This may change based on the project you’re engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.What you need to have to be considered•    3+ years of experience in QA automation and software testing. •    Strong understanding of programming fundamentals (Java OOPs, Data Structures), with experience working in Java, JavaScript, or Python. •    Hands‑on experience building and scaling automated test frameworks. •    Experience testing conversational AI solutions (chatbots or voice-based virtual assistants). •    Proficiency with Hammer On Demand, Cyara, and Selenium.•    Experience working with agentic or AI‑powered IDEs (e.g., Windsurf, Cursor). •    Strong understanding of SDLC, Agile methodologies, and QA best practices. •    Experience using version control and CI/CD tools (e.g., Git). •    Knowledge of BDD (Cucumber, SpecFlow) and TDD methodologies. •    Experience with backend API automation and database testing. •    Exposure to GenAI or AI‑driven test automation tools. •    Strong analytical, problem‑solving, communication, and collaboration skills.This will help you stand out•    Healthcare industry experience, including familiarity with HIPAA compliance. •    Understanding of AI model evaluation metrics (accuracy, precision, recall, F1‑score). •    Experience with API testing (REST, SOAP). •    Familiarity with cloud platforms such as AWS, GCP, or IBM Cloud. •    work in the United States without company sponsorship *Please note, this role is not able to offer visa transfer or sponsorship now or in the future*We're excited to meet people who share our mission and can make an impact in a variety of ways. Don't hesitate to apply, even if you only meet the minimum requirements listed. Think about your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting things to this role.Salary and Other Compensation: Applications will be accepted until March 14, 2026 The annual salary for this position is between $71,100 to 112,500 depending on experience and other qualifications of the successful candidate. This position is also eligible for Cognizant’s discretionary annual incentive program, based on performance and subject to the terms of Cognizant’s applicable plans. Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements: Medical/Dental/Vision/Life Insurance Paid holidays plus Paid Time Off 401(k) plan and contributions Long-term/Short-term Disability Paid Parental Leave Employee Stock Purchase PlanDisclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

Automation Tester with Hammer/Cyara and Conversational AI Testing experience

Automation Tester

3+ years in QA automation; strong programming fundamentals; experience with Hammer On Demand, Cyara, Selenium; AI testing; CI/CD integration; API and backend testing; GenAI exposure.

Software Architect

Senior-level software architect with 7+ years in building complex production systems; strong data/AI integration; leadership and mentoring experience.

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Peraton is seeking Summer 2026 Cyber Research Interns in our Bedford, NH location.  Peraton Labs delivers innovative solutions and revolutionary new capabilities to solve the most difficult and complex challenges for government agencies, utilities, and commercial customers. With a distinguished heritage tracing back to Bell Labs, Bellcore, DHPC, and Telcordia, we are a self-sustaining research center within Peraton that provides applied research and engineering to enable government agencies, utilities and commercial enterprises to fully exploit the future of communications, analytics and cyber security. Peraton Labs’ cybersecurity research protects mission-critical systems and national cyber infrastructure through a broad range of initiatives in computer network defense, cyber operations, secure-by-design techniques, and experimentation platforms. Responsibilities:Qualified applicants must be able to perform applied research and development in one or more key areas of interest:<ul style="margin-top: 0in;"><li style="margin-bottom: 0in;">Design and implement state-of-the-art Deep Learning models to detect cyber security threats.</li><li style="margin-bottom: 0in;">Design and implement cyber deception technologies to deter adversaries</li><li style="margin-bottom: 0in;">Conduct literature survey on state-of-the-art cyber deception technologies.</li><li style="margin-bottom: 0in;">Conduct literature survey on adversarial attacks against Deep Learning architectures.</li><li style="margin-bottom: 0in;">Rapidly develop Proof-of-Concepts (PoCs) demonstrating research findings.</li><li style="margin-bottom: 0in;">Prepare documentations and presentations summarizing research findings.</li><li style="margin-bottom: 0in;">Collaborate with team members and integrate PoCs/prototypes into a unified technology.</li><li style="margin-bottom: 0in;">Create a broader impact by developing implementation plans for transferring the technology to Government customers.</li><li style="margin-bottom: 0in;">Full-spectrum cyber operations, offensive and defensive cyber operations.</li><li style="margin-bottom: 0in;">Software reverse engineering, vulnerability research, and exploit development.</li><li style="margin-bottom: 0in;">Machine learning methods as applied to cyber security problems.</li><li style="margin-bottom: 0in;">Program analysis (including vulnerability detection and/or remediation)</li></ul>

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Required Qualifications:<ul style="margin-top: 0in;"><li style="margin-bottom: 0in;">HS diploma and some advanced level training. </li><li style="margin-bottom: 0in;">US Citizenship required.</li><li style="margin-bottom: 0in;">Must be a current student actively pursuing a BS/BA, or preferably a MS or PhD, degree majoring in Computer Science, Machine Learning, Computer Engineering, Cybersecurity, Information Science, or related field.</li><li style="margin-bottom: 0in;">Demonstrated hands-on experience building systems in Python (PyTorch and Tensorflow) or C/C++; additional languages (Java, Rust, Go, etc) is a plus.</li><li style="margin-bottom: 0in;">Knowledge of Linux and Windows platforms. </li><li style="margin-bottom: 0in;">Ability to integrate, build, and test high-quality technical solutions.</li><li style="margin-bottom: 0in;">Effective communication and writing skills.</li></ul>Desired Qualifications:<ul style="margin-top: 0in;"><li style="margin-bottom: 0in;">Familiarity with the principles and technologies used in modern TCP/IP networks is a plus.</li><li style="margin-bottom: 0in;">Experience working with cyber datasets is a plus.</li><li style="margin-bottom: 0in;">A passion to learn something new every day and to stay up-to-date with developments in your field.</li><li style="margin-bottom: 0in;">Adept at independent problem-solving and comfortable with a general approach of taking initiative to find and develop solutions.</li><li style="margin-bottom: 0in;">Ability and desire to quickly acquire knowledge of new subject matter areas.</li><li style="margin-bottom: 0in;">Working knowledge of modern computer networking technologies.</li></ul>#PeratonIntern

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Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world’s leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can’t be done by solving the most daunting challenges facing our customers. Visit <a href="http://peraton.com/" target="_blank" rel="noopener">peraton.com</a> to learn how we’re keeping people around the world safe and secure.

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The rate / range per hour below represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual’s experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

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$25.00+

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EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.

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Summer 2026 Cyber Research Intern - Bedford, NH

Cyber Research Intern

HS diploma and pursuing BS/BA or MS/PhD in CS/ML/Cybersecurity; proficient in Python (PyTorch/TensorFlow) or C/C++; Linux/Windows; strong communication; ability to develop PoCs and document findings.

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