Senior Java Developer

Why This Role Matters

We’re looking for a Principal Engineer to lead the architecture and execution of our GenAI-powered, self-serve marketing platforms. You will work directly with the CEO to shape, build, and scale products that change how marketers interact with data and AI. This is intrapreneurship in action — not a sandbox innovation lab, but a real-world product with traction, velocity, and high stakes.

What You'll Do

• Co-own product architecture and direction alongside the CEO.
• Build GenAI-native, full-stack platforms from MVP to scale — powered by LLMs, agents, and predictive AI.
• Own the full stack: React (frontend), Node.js/Python (backend), GCP (infra), BigQuery (data), and vector databases (AI).
• Lead a lean, high-caliber team with a hands-on, unblock-and-coach mindset.
• Drive rapid iteration with rigor, balancing short-term delivery with long-term resilience.
• Ensure scalability, observability, and fault tolerance in multi-tenant, cloud-native environments.
• Bridge business and tech — aligning execution with evolving user and market insights.

What You Bring

• 8–12 years of experience building and scaling full-stack, data-heavy or AI-driven products.
• Fluency in React, Node.js, and Google Cloud (Functions, BigQuery, Cloud SQL, Airflow, etc.).
• Hands-on experience with GenAI tools (LangChain, OpenAI APIs, LlamaIndex) is a bonus.
• Track record of shipping products from ambiguity to impact.
• Strong product mindset — your goal is user value, not just elegant code.
• Architectural leadership with ownership of engineering rigor and scaling best practices.
• Startup or founder DNA — you’ve built things from scratch and know how to move fast without breaking things.

Who You Are

• A former founder, senior IC, or tech lead who’s done zero-to-one and 1-to-n scaling.
• Hungry for ownership and velocity — frustrated by bureaucracy or stagnation.
• You code because you care about solving real problems for real users.
• You’re pragmatic, hands-on, and grounded in first principles.
• You understand that great software isn't just shipped — it's hardened, maintained, and evolves with minimal manual effort.
• You’re open to evolving into a founding engineer role with influence over the tech vision and culture.

What You Get

• Equity in a high-growth product-led startup.
• A chance to build global products out of India with full-stack and GenAI innovation.
• Access to high-context decision-making and direct collaboration with the CEO.
• A tight, ego-free team and a culture that values clarity, ownership, learning, and candor.

Why YOptima?

YOptima is redefining how leading marketers unlock growth through full-funnel, AI-powered media solutions. As part of our growth journey, this is your opportunity to own the growth charter for leading brands and agencies globally and shape the narrative of a next-generation marketing platform.

Ready to lead, build, and scale?

We’d love to hear from you.

Job Title: Full Stack Developer

Experience- 3+ years

Location: Remote

Notice Period: Immediate Joiner Preferred

Job Description:

Responsibilities:

• Design, develop, and maintain full-stack applications using Python (FastAPI), Node.js, and React.
• Create and optimize RESTful APIs and backend services.
• Work with PostgreSQL to design efficient data models and write complex SQL queries.
• Develop responsive and interactive front-end components using React.
• Collaborate with team members using Git for version control and code reviews.
• Debug, troubleshoot, and enhance existing applications for better performance and user experience.
• 
  

Requirements:

• 3 years of experience in full-stack development or a similar role.
• Strong proficiency in Python with hands-on experience in FastAPI.
• Solid front-end development experience using React.
• Experience developing backend services with Node.js.
• Proficiency in PostgreSQL, including writing efficient SQL queries.
• Familiarity with Git for version control and collaborative development.
• Good communication and problem-solving skills.

Job Description:

• working on all layers of architecture Understanding the flow of code and how it interacts with different components.
• Building REST API.
• Creating technical design documents by understanding requirements, and product objectives.
• Writing effective Unit tests
• Good analytical skills and innovative mind.
• Source code management.
• Excellent communication skills.

Desired Skills

• Experience on Mern Stack (MongoDB, Express.js, React, Node.js)
• Strong understanding of JavaScript, object-oriented JS, its quirks, and workarounds•
• Strong hands-on experience in JavaScript• Strong proficiency with JavaScript or CoffeeScript depending on your technology stack.
• Good understanding of server-side CSS preprocessors such as Stylus, Less•
• Basic understanding of web markup, including HTML5 and CSS3• Good understanding of asynchronous request handling, partial page updates, jQuery, and AJAX•
• Proficient understanding of cross-browser compatibility issues and ways to work around such issues• Familiarity with JavaScript module loaders, such as Require.js and AMD•
• Proficient understanding of code versioning tools, such as SVN• Good understanding of browser rendering behavior and performance
• Key Programming Skills: MERN stack, full stack, React, Java, HTML/CSS, JavaScript, Bootstrap.
• Experience working with Rest based APIs

As a Staff Full-stack engineer, you will work across the Acceldata platform products. We’re looking for people with a strong background or inclination towards data engineering and systems; you’re comfortable in dealing with lots of moving pieces and can work at the  intersection of Databases, API's and Frontends

You will:          

• Be actively involved in strategic direction and product decisions.
• Design, build and maintain APIs, user-facing experiences, and services.
• Work closely with our customers and sales teams on a regular basis to carve out new features and use cases
• Work with MVC frameworks such as React or Angular 
• Work with database systems, RDBMS, Mongo, Elastic Search.
• Develop shared front-end components (JavaScript & CSS) for use across all of our products, enabling other UI engineers to build better products faster.

You need:      

• 8+ years of significant of web-application development experience in one or more JS frameworks. You care about building better products.
• Strong Computer Science fundamentals in data structures, algorithm design, and problem-solving.
• You're as comfortable writing plain JavaScript as working with modern frameworks like Angular. You've built your own controls and widgets in JavaScript. 
• You write unit tests for your JavaScript (really, you do). You've probably used Node. You have built complex JS web applications.
• Organized, thorough, and detail-oriented 

Good to have:

• Contribution to open-source projects.
• Background in enterprise software
• JVM performance tuning and debugging

• 8 - 11 years of experience in software development with at least 5 years on GUI development
• Experience on Java, HTML, CSS and Java script
• Experience with write SQL or equivalent queries on relational or NoSQL databases e.g. Oracle, PostgreSQL, Couchbase, MongoDB, Cassandra

Roles and Responsibilities

• Strong proficiency in Java and building scalable enterprise applications
• Can think of architectural design at scale
• Love solving complex and challenging problems
• Have good knowledge of design and architectural patterns
• Thrive to implement Industry’s best practices and coding standards
• High obsession for Quality and Performance
• Good knowledge on performance optimization, SQL tuning, caching techniques
• Like to collaborate with people, share knowledge, learn from others and mentor juniors

Xoxoday is looking for a highly skilled computer programmer who is comfortable with front end programming. The front-end developer's job is to convert website design files into high fidelity HTML/CSS and work on ReactJS code to bring it to life.

• Design and develop UI for SaaS Application using HTML/CSS
• Driving innovations
• Estimate efforts, identify risks, devices and meets project schedules
• Mentors and coaches’ engineers and provide technical leadership

‍

An enthusiastic individual with the following skills. Please do not hesitate to apply if you do not match all of it. We are open to promising candidates who are passionate about their work and are team players.

• 4 years of strong design and development experience in building massively large-scale distributed internet systems and products
• Skillsets -

• Expert - HTML/CSS/Bootstrap/Pixel perfect UI development.
• Good - ReactJS/AngularJS

• Scripting languages like NodeJS will be good to have
• Building single page applications with multiple components
• Working on complex dashboards and reporting interfaces
• Data structures & algorithms skills
• Open source software, frameworks, and broader cutting-edge technologies
• Modern JavaScript libraries and front-end components
• BS/MS in Computer Science or equivalent

You will be working with top-quality engineers who have built one of the best employee engagement SaaS platforms. You will be reporting to AVP Engineering and working closely with the Architect and other leads.

‍

A wholesome opportunity in a fast paced environment that will enable you to juggle between concepts, yet maintain quality on content, interact and share your ideas and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at Xoxoday.

‍

A fast growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore and Dublin. We have three products in our portfolio: Plum, Empuls and Compass. Xoxoday works with over 1000 global clients. We help our clients in engaging and motivating their employees, sales teams, channel partners or consumers for better business results.

‍

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. We however assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.