Core Java Developer

Join our dynamic team at Ag Technologies 1 as a Junior Java Developer. We are seeking a motivated and enthusiastic individual who is passionate about software development and eager to grow their skills. In this role, you will be involved in designing, developing, and maintaining Java applications, collaborating with cross-functional teams, and contributing i…

Join our innovative team at StemXpert1 as a Java Developer. We are seeking a talented professional who is passionate about designing and building high-quality software solutions. You will collaborate with cross-functional teams to enhance our applications and contribute to exciting projects that impact the future of technology.

Join our innovative team at Comtech LLC as a Java Developer. This is an exciting opportunity for entry-level candidates looking to kickstart their career in software development. You will be part of a dynamic environment where you can hone your skills and contribute to impactful projects.

About JuniorAt Junior, we are innovating the investment research landscape by developing advanced LLM-powered tools tailored for private market investors. Our clientele features some of the globe's leading private equity and consulting firms, collectively managing investments worth billions each year. We pride ourselves on being a profitable and bootstrapped enterprise, currently expanding our dynamic team of 24 across our London and NYC offices.Discover more about our mission and values here. Role DescriptionIn your role as a Backend Engineer, you will play a pivotal part in constructing and enhancing the systems that drive our AI-powered research platform. This systems-level position is perfect for engineers passionate about data flows, orchestration, and optimizing performance across intricate distributed systems.As one of our initial engineering team members, you will enjoy the distinctive chance to:Deliver results swiftlyDesign and scale backend systems that facilitate high-throughput LLM interactions, vector search, and multi-agent orchestration.Integrate AI infrastructure across various model providers, databases, and internal APIs to develop cohesive and effective systems.Take charge of reliability and observability, aiding in the evolution of our database (Postgres / ClickHouse) and job orchestration systems.Prototype innovative backend functionalities (retrieval pipelines, caching layers, async task queues) that empower quicker and smarter development.Influence our engineering culture About YouWe seek product-oriented backend engineers who:Are based in NYC, as we operate 5 days a week in-person.Are enthusiastic about the convergence of AI infrastructure and systems design.Have a track record of leading projects from inception to completion.Are eager to participate in product decisions.Possess proficiency in our technology stack: Next.js, TypeScript, PostgreSQL.Feel that there is always room for faster development.

About Junior Junior builds LLM-powered tools that support investment research for top deal teams. Our clients include several of the world’s largest private equity firms, Big 4 professional services, and leading consulting companies, organizations that collectively manage billions each year. We are a profitable, bootstrapped company with about 28 team members in London and New York. In 2025, we achieved 10x revenue growth and are on track for another 2-3x increase this year. Junior’s platform helps clients save an average of 10 hours per week, and we are expanding into sectors like investment banking, hedge funds, and research firms. Role Overview: Data Analyst This is Junior’s first dedicated data analyst role in New York City. The person in this position will build the foundation for analytics across the company, providing insights that clarify what drives user engagement, customer retention, and business growth. This role goes well beyond generating dashboards. The analyst will influence decision-making at a fast-growing AI startup, taking on a highly visible and impactful position from day one. Sample Projects Feature Adoption & Engagement Analysis: Examine how different features are used, segmenting by firm type, user role, and tenure. Deliver insights to the Product team for prioritization. Churn & Health Scoring: Build models that flag accounts at risk of churn, using product usage data to alert Customer Success before issues escalate. CRM Data Quality & Enrichment: Audit and improve CRM data. Develop pipelines to sync CRM with product usage, ensuring Sales has accurate account information. Sales Funnel Analysis: Map the acquisition funnel from first contact to closed deals. Identify bottlenecks and link product usage patterns to conversion rates. Executive Reporting: Create a weekly data summary for leadership, covering revenue, usage, pipeline health, and key anomalies. Move from ad hoc spreadsheets to automated reporting. What We’re Looking For We seek a data analyst who enjoys using data to shape business decisions and improve products. Candidates who thrive in a startup setting and want to make a visible impact will feel at home here.

Join our dynamic team at Sonsoft Inc., where we are seeking a talented Core Java Developer to help drive our innovative projects forward. As a key member of our development team, you will be responsible for designing, implementing, and maintaining robust Java applications. Your expertise will help us enhance our software solutions and deliver exceptional value to our clients.

About JuniorAt Junior, we are revolutionizing investment research with innovative, LLM-powered tools specifically designed for private market investors. Our clientele includes some of the top 10 private equity and consulting firms globally, managing investments worth billions each year. We are a profitable, bootstrapped startup with a dynamic team of 24 based in London and New York City, and we celebrated a remarkable 10x revenue growth in 2025.Discover more about our mission and values here. Role DescriptionWe are seeking a passionate and driven Product Manager to take charge of our core research workflow and help establish a dedicated product team to create 0-1 add-on products. This individual contributor role will involve managing daily product execution, collaborating closely with Customer Success, users, engineering, and design teams on specifications and trade-offs, overseeing quality assurance, and ensuring frequent product launches. The ideal candidate will have substantial opportunities for growth into a leadership position as our company expands. What you’ll doLead the roadmap and execution for the core research workflow.Engage closely with Customer Success and users to identify workflows, pain points, and define what excellence looks like.Collaborate with Engineering and Design to prioritize, scope, and expedite shipments.Drive QA and release readiness through testing plans, bug triage, launch checklists, and iteration strategies.Maintain alignment among stakeholders (founders, engineering, design, Customer Success) through effective, high-impact communication.Participate in sales and Customer Success calls to demonstrate the product and new features, clearly articulate capabilities, and translate customer needs into product priorities. What success looks likeIncreased shipping velocity (more high-quality releases and faster iteration loops); our aim is to launch one major new feature each week.Improved adoption of new features and modules (ensuring users discover, utilize, and continue using them).Enhanced customer responsiveness (faster feedback leading to clearer decisions and timely shipping of fixes and improvements).

Join our dynamic team as a Java Developer and contribute to innovative software solutions that enhance client experiences. In this role, you will collaborate with cross-functional teams to design, develop, and implement high-quality applications using Java technologies.

Join our dynamic team as a Java Developer in Rochester, New York! We are seeking a talented individual with a passion for software development to contribute to exciting projects and collaborate with a forward-thinking team. This role involves designing and implementing robust Java applications, ensuring code quality, and participating in the full software development lifecycle.

About JuniorAt Junior, we are at the forefront of innovation, creating state-of-the-art tools powered by Large Language Models (LLMs) that enhance the investment research process for private market investors. Our clientele includes several of the top 10 private equity and consulting firms globally, collectively managing investments worth billions annually. As a profitable, bootstrapped startup, we are expanding our talented team of 24 professionals located in London and New York City.Discover more about our mission and values here. Role DescriptionAs one of our pioneering AI/ML engineers, you will have the unique opportunity to:Engage in innovative projects that blend LLMs with traditional machine learning techniques.Develop novel ideas for research synthesis utilizing NLP techniques and demonstrate their business impact.Collaborate closely with external partners to accelerate our growth trajectory.Influence product decisions, strategic direction, and prioritization.Help shape our engineering culture and practices.With over 20 enterprise clients already onboard and tens of thousands of interactions on our platform, there is ample data to analyze and enhance. Sample ProjectsCreate a search ranking algorithm that leverages user interaction signals alongside semantic and PostgreSQL-based text search to enhance relevance and accuracy.Develop a proprietary prompt system that continuously refines prompts and outputs based on production signals and human feedback.Open source a benchmark for evaluating LLM outputs specifically for investment research tasks.Design a deduplication system that utilizes in-app signals and external data sources for accurate entity resolution from speech-to-text outputs.Construct a custom knowledge graph for each research sprint, transforming unstructured interview data into actionable insights while dynamically integrating relevant data.

About JuniorAt Junior, we are revolutionizing the investment research landscape with innovative LLM-powered tools designed specifically for private market investors. Our clientele includes some of the world's leading private equity and consulting firms, collectively managing billions in annual investments. As a profitable and bootstrapped startup, we pride ourselves on our dynamic team of 24 professionals located in both London and New York City.Discover more about our mission and values here. Role OverviewAs one of our inaugural engineering team members, you will have the exceptional chance to:Rapidly deliver high-quality featuresConceptualize and develop new methods for interacting with technologyEngage in pioneering projects involving LLMsCollaborate closely with our partners to drive growthInfluence product direction and prioritize initiativesHelp shape our engineering culture from the ground up Sample ProjectsDevelop innovative products to integrate diverse research inputsCreate a voice-to-voice survey tool that autonomously performs high-volume research tasks with minimal latencyLaunch a mobile application from the ground up within three weeksConstruct segmented knowledge graphs from the transformation of unstructured into structured dataDesign an AI-native CRM system linked to the aforementioned knowledge graph About YouWe are searching for product-focused full-stack engineers who:Are based in NYCAre enthusiastic about making substantial contributions to product strategyPossess excellent communication abilities and enjoy client interactionAre skilled in our technology stack: Next.js, TypeScript, PostgreSQLBonus points for experience in developing and designing AI-driven products!Are driven to build rapidly and efficiently

About JuniorAt Junior, we are pioneering advanced LLM-powered tools designed to revolutionize the investment research process for private market investors. Our clientele includes some of the top 10 private equity and consulting firms worldwide, managing investments worth billions annually. As a profitable and bootstrapped company, we have a vibrant team of 24 based in London and New York City.Discover more about our mission and values here. Role DescriptionAs one of our inaugural engineering interns, you will have the unique chance to:Rapidly deploy solutionsDesign and develop innovative methods for interacting with technologyEngage in pioneering projects that utilize LLMsCollaborate intimately with external partners to drive our expansionInfluence product strategy, direction, and prioritizationHelp cultivate our engineering culture Project HighlightsDevelop new innovative products at Junior to incorporate a wider array of research inputsCreate a voice-to-voice survey tool with ultra-low latency capable of autonomously performing large-scale research tasksConstruct a mobile application from the ground up in just 3 weeksBuild segmented knowledge graphs to transform unstructured data into structured formatsDevelop an AI-native CRM system linked deeply to the aforementioned knowledge graph About YouWe seek product-oriented full-stack engineers who:Reside in NYCAre motivated to participate in product decisionsPossess excellent communication skills and an interest in client-facing rolesAre skilled in our tech stack: Next.js, TypeScript, PostgreSQLBonus points for experience in designing and building AI-powered products!Have a strong desire to accelerate development processes

Join our dynamic team at info-ways as a Core Java Developer, where you will work on innovative projects that shape the future of technology. As a key member of our development team, you will design, implement, and maintain high-performance applications using core Java technologies. Your expertise will contribute to enhancing our software solutions and driving our mission to deliver exceptional products to our clients.

Join our dynamic team at Sonsoft Inc. as a Lead Java Developer specializing in Core Java. In this pivotal role, you will spearhead the development of innovative software solutions while mentoring a team of talented developers. Your expertise in Java, coupled with your leadership skills, will be instrumental in driving our projects to success.

Join our innovative team at Sonsoft Inc. as a Core Java Developer. We are looking for a passionate individual who thrives in a dynamic environment and is eager to contribute to cutting-edge projects. You will work closely with cross-functional teams to develop robust applications, optimize performance, and enhance user experience.

Join our dynamic team at StemXpert1 as a Java GWT Developer. In this role, you will contribute to the development of innovative web applications using Java and Google Web Toolkit (GWT), ensuring high performance and responsiveness to user interactions.Your expertise will be valuable in collaborating with cross-functional teams to define, design, and ship new features. You will also be responsible for maintaining and improving existing applications, making your mark on our cutting-edge projects.

About JuniorAt Junior, we are at the forefront of developing innovative LLM-powered tools designed to enhance the investment research experience for private market investors. Our esteemed clientele includes some of the world's leading private equity and consulting firms, responsible for managing billions in investments annually. As a profitable and bootstrapped company, we boast a dynamic team of 17 members operating out of London and New York City.Discover more about our mission and values here. Role DescriptionAs our inaugural NLP/ML hire, you will have the exceptional chance to:Transform product and business requirements into applied ML/NLP solutions, generating innovative research synthesis concepts and validating their business impact through rapid prototyping.Design and enhance retrieval, search, and ranking algorithms by integrating semantic embeddings, behavioral signals, and structured database queries, while also creating custom reranking models.Fine-tune SLMs/LLMs for tasks requiring high accuracy and low latency such as classification, query rewriting, summarization, and personalization.Utilize advanced alignment and reliability methodologies (e.g., DPO, fine-tuning strategies, evaluation-driven iteration) to elevate user experience and trust.Experiment with summarization and synthesis techniques to convert extensive sets of unstructured interview notes into actionable insights.Engage in product decisions, direction, and prioritization.Influence our engineering culture.With over 20 enterprise clients already onboard and tens of thousands of interactions on our platform, there is ample opportunity for data enhancement and innovation. About YouWe seek product-oriented ML engineers who:Are based in NYC.Possess a solid background as an NLP/ML researcher with expertise in RAG, LLMs, and Generative AI pipelines.Have a proven track record in building production-grade ML systems, including search, information retrieval, and structured outputs.Exhibit excellent communication skills and are eager for a client-facing role.

Join our dynamic team at Sonsoft Inc. as a Lead Java Developer specializing in Core Java. We are seeking a passionate individual who is ready to take on a leadership role and drive innovative software solutions. You will be responsible for designing, developing, and maintaining high-quality applications while collaborating with cross-functional teams.

Join our dynamic team at Comtech LLC as a Java Developer. We are seeking passionate Java developers who thrive in a collaborative environment and are eager to contribute to innovative projects. You will be working on cutting-edge technology solutions that impact our clients and the industry.