We are seeking a talented Full Stack Engineer to join our team and help build the Opik product! Opik is an open-source platform designed to streamline the entire lifecycle of LLM applications, helping developers evaluate, test, monitor, and optimize their models and agentic systems.

Ready to shape the future of LLM development? Join us in building the next generation of AI observability tools!
Responsibilities:
Build & ship features at high pace in a fast-moving AI development environment
Develop and maintain comprehensive observability tools for LLM applications and RAG systems
Create intuitive user interfaces for LLM tracing, evaluation dashboards, and production monitoring
Build robust APIs and backend services to support real-time LLM application monitoring
Collaborate with AI researchers and ML engineers to implement cutting-edge evaluation methodologies
Contribute to both frontend (React/TypeScript) and backend (Java) components
Design and implement automated evaluation systems and "LLM as a Judge" capabilities
Work on integrations with popular LLM frameworks and libraries
Participate in open-source community engagement and technical documentation

we are looking for a Full Stack Engineer - Integrations Frameworks.
Your Role:
Design and implement full-stack features that deliver seamless user experiences, supported by high-performance services within the One ecosystem.
Develop and scale frameworks and tools that empower internal teams, partners, and our community to customize and extend platform integrations.
Bridge the gap between complex backend functionalities-such as data ingestion and AI-driven workflows-and intuitive, highly performant frontend interfaces.
Drive architectural decisions across the UI, API, and service layers, championing modular, maintainable, and consistent design patterns.
Engage in cross-domain technical reviews and discussions, sharing expertise to foster a culture of collaboration and continuous technical excellence.
Partner with Product, Design, SRE, and Security teams to deliver technical solutions that are both user-centric and aligned with business goals.
Maintain a "production-first" mindset, investigating issues end-to-end-from the browser to the data layer-while implementing robust preventative measures.

Were looking for a passionate and creative Software Engineer with a strong data-driven mindset and around 4 years of experience to join our team. In this role, you will contribute to developing our cloud-based personalized networking and security management solutions, as well as building scalable systems for processing and analyzing data across multiple networks.
Responsibilities:
End-to-end development, from processing large-scale data to building intuitive web interfaces
Designing and implementing data pipelines, analytics, and insight-driven features
Developing backend services with a focus on performance and scalability using C/C++ and Python
Contributing to frontend development and overall system integration
Implementing and testing network security enterprise solutions
Conducting research and prototyping new features and product ideas
Exploring new technologies and integrating them into the product
Driving a data-driven approach to product and engineering decisions.

We are looking for a Senior Full-Stack Engineer who is passionate about building high-quality products, solving complex technical challenges, and delivering experiences that make a meaningful impact on people's lives. You will partner closely with Product, Design, Data Science, and Engineering teams to take products from concept to production while helping shape the future of our platform.

You will join an experienced engineering organization building products used by people around the world, working in an AI-augmented development environment that embraces modern tools to accelerate delivery, improve code quality, and increase engineering effectiveness.

Our Technology Stack: React Native, React, TypeScript, Redux, Scala, Play Framework, Microservices, AWS, Docker, Kubernetes, MongoDB, Redis, PostgreSQL, Spark, Elasticsearch, Kafka, and more.

Responsibilities
Build and deliver scalable, reliable, and maintainable software that powers products used daily by members around the world.
Design and develop frontend and backend solutions with a focus on performance, scalability, and user experience.
Create reusable frontend architecture, components, and engineering patterns that improve development velocity and consistency.
Partner with Data Science teams to integrate algorithms and data-driven capabilities into new and existing products.
Collaborate closely with Product Managers, Designers, Data Engineers, and fellow engineers throughout the full product development lifecycle, including discovery, design, implementation, experimentation, and iteration.
Take ownership of projects from technical design through production deployment and ongoing optimization.
Contribute to architectural decisions and continuously improve engineering standards, processes, and platform capabilities.
Leverage AI tools throughout the software development lifecycle to accelerate development, improve code quality, and increase team productivity while maintaining strong engineering judgment.

We are looking for a top-notch Senior Full Stack Engineer who will work on our next first-to-market AI-powered products and create elegant solutions using the latest technologies. This position will be based in our R&D office in the heart of Tel-Aviv.

In this role, you will be responsible for designing, developing, and maintaining end-to-end (client and server) features and web applications. You will work closely with our design, product, and AI teams to translate complex requirements into intelligent, user-friendly experiences powered by data and automation.

As part of growing AI initiatives, you will help build products that leverage LLMs, AI agents, and advanced analytics to deliver actionable insights for marketers at scale. You will have the opportunity to work on innovative AI-driven experiences, integrate modern AI infrastructure and tools, and shape how customers interact with and understand their data.

We deeply encourage our engineers to develop a deep understanding of our industry, our customers, and emerging AI technologies, while continuously growing their engineering skills. You will also have the chance to work in one of the most professional R&D teams in the startup community and grow professionally.
Key Responsibilities


Build and maintain backend services responsible for integrating with a wide variety of APIs, webhooks, and partners.

Design, develop, and own integration flows end-to-end: architecture, implementation, deployment, and monitoring.

Work on data pipelines handling large volumes of streaming and batch data with high reliability and low latency.

Ensure data accuracy and consistency across ingestion, transformation, and storage layers.

Collaborate with product, data engineering, and customer-facing teams to understand edge cases, resolve production issues, and improve partner integrations.

Take ownership of features and systems while proactively identifying gaps and driving improvements.

Integrate and leverage industry technologies such as Kafka, Iceberg, DynamoDB, Postgres, EMR, Kubernetes, Druid, Snowflake, and more.

We are looking for a Full-Stack Engineer to join a unique and highly impactful team.
This team operates across both frontend and backend,
building a core internal platform that powers critical workflows across the company - including R&D, Product, MDR, and Security Research teams. This system is at the heart of how we operate, enabling powerful capabilities and directly impacting day-to-day work across the organization.
This is a highly sensitive and critical system that directly impacts production environments and customer experience, requiring strong ownership and attention to detail.
Youll work closely with real users inside the company, gaining fast feedback loops and high visibility. In addition, the team collaborates with the broader Frontend group and contributes to features in the main product, giving you exposure to both internal systems and customer-facing experiences.
The team is deeply involved in product and design decisions, with strong ownership over user experience, architecture, and technical direction.
Responsibilities:
Design and build end-to-end features across the stack using
React, TypeScript, and Java
Take ownership of features from concept to production, including architecture and implementation
Collaborate closely with Product, Design, and internal stakeholders to define solutions
Work directly with internal users to understand needs and iterate quickly
Contribute to both internal platforms and customer-facing product features
Drive best practices in code quality, testing, and system design
Participate in design and code reviews
Continuously improve performance, scalability, and usability of the system.

We're seeking an experienced Full-Stack engineer proficient in both front and back-end programming, dedicated to leveraging technology for impactful product development. As a key member of the application team, your role involves designing and developing scalable front-end solutions, web architecture, and end-to-end platform services. Collaboration with product managers, UX/UI designers, and Geo-information analysts is essential to deliver robust features.

Responsibilities:
Build top-notch, scalable, and reusable code, adhering to best practices in software engineering, architecture, and processes, including code reviews and testing.
Take complete ownership of new features, collaborating with PMs to define requirements, design scalable solutions, and iteratively enhance them based on user feedback.
Lead the development and maintenance of microservices, contributing to the evolution of our architecture for enhanced scalability and modularity.
Collaborate closely with cross-functional teams to define, design, and deliver high-quality software applications that align with both technical and business requirements.

We are a global investment platform connecting accredited investors and institutions with vetted, early-stage startups and venture funds. Behind that platform sits a tech organization building the systems that power how thousands of investors discover, evaluate, and act on private-market opportunities. We're now expanding our Technology team with engineers who can build the next generation of AI-driven products at the core of our platform.
 
Why Join Us? This is a chance to build at the intersection of fintech and applied AI, not as a side experiment, but as the direction of the product. You'll design and ship production-grade backend and FullStack systems that sit at the heart of a real, global investment platform, while being hands-on building AI agents that teams across the company actually depend on: architecting scalable microservices in Node.js, putting LLMs and agentic tooling to work, and owning features end to end from design through deployment.
Because real users and real capital flow through our platform, your work ships and matters from day one. You'll get real ownership over the features you build, hands-on exposure to how we adopt agentic AI, and a front-row seat to the startup and innovation ecosystem we live inside every day. If you want to master cutting-edge AI tooling while solving hard distributed systems problems alongside a small, sharp team - this is the place to do it.
This role requires 3 days a week in-office with the technology team primarily based out of Tel Aviv. Since we are headquartered in Jerusalem, candidates based in and around Jerusalem are welcome to apply, provided they're comfortable with Tel Aviv as the team's main hub.
Responsibilities:
 
* Design, build, and ship production backend and FullStack features for our investment platform using Node.js and microservices
* Build and deploy AI agents and LLM-powered tools used in production across the company, from prototype to rollout
* Architect and maintain scalable microservices, integrating SQL and NoSQL data stores as needed
* Design agentic workflows and orchestration pipelines, using low-code tools (e.g. n8n, Make) alongside custom services where appropriate
* Own features end to end: design, estimation, implementation, testing, deployment, and monitoring
* Partner with product, data, and engineering teams to turn business and investor needs into technical solutions
* Evaluate emerging LLM frameworks and AI tooling to keep our stack current and production-ready
* Write clean, well-tested code and participate in code reviews to uphold team quality standards
* Troubleshoot issues across the stack, balancing delivery speed with the reliability a capital platform demands
* Help shape architecture, tooling, and best practices as the team scales its use of agentic AI

Interview Process:
* Recruiter phone call
* Take home assignment
* In-person interview with Manager
* In-person interview with Department Head
* In-person interview with HR
* References

We are currently in the process of building our next huge project. Were creating the CHAT API solution, adding the ability to offer a complete chat capability that contains team messaging, SMS, MMs, WhatsApp, e-mail and Facebook domains into our platform. The CHAT API is going to be used across the entire organization in various different products.

The team is working end to end on all aspects of the product - they're developing solutions UI to Backend and maintaining the stack. We more than just colleagues; we're a community that thrives on collaboration, creativity, and, most importantly, having a good time together.

Your key responsibilities:
Working on end-to-end projects in a full-stack backend oriented role, aligned with your skills and career goals.
Taking a key role in building and leading the team from an Architecture perspective.
Designing, researching, developing and testing the functional and non-functional areas.
Onboarding and mentoring new team members.
You will help build a reliable continuous improvement process and ensure efficient delivery at high level.