לוח משרות דרושים Senior Backend Developer בתל אביב יפו

Required Experienced Backend Engineer
At SubStrata were building a machine learning based software that helps sales and business-development professionals push the deal forward and convert more prospects into clients.
As a full-stack engineer, youll play a key role in our expanding core technology team.

We are looking for Senior Engineers who treat AI as a core part of their workflow - people who experiment, iterate, and know how to get real value out of AI tools. Flexibility, curiosity, and a problem-solving mindset are must-haves. In this role you will have the opportunity to take ownership of the development of groundbreaking, AI-driven products and work on interesting projects inside a smart, fun, and dynamic engineering team.

This position is based out of our Jerusalem or Tel-Aviv offices and reports to the Dev Team Lead.

What you will be responsible for
Write clean, high-quality, high-performance, maintainable code.
Ensure that the projects you work on meet business objectives and coding standards.
Support the deployment and testing of new products and features.
Collaborate with cross-functional teams to gather and analyze requirements, translating them into technical specifications.
Design and implement APIs and integrations with third-party services to enhance system functionality.
Optimize application performance through code profiling, monitoring, and refactoring as necessary.
Implement automated testing frameworks to ensure code robustness and reliability.
Participate in code reviews and provide constructive feedback to peers to foster continuous improvement.
Stay updated with emerging technologies, best practices, and industry trends to drive innovation within the team.
Assist in the establishment and enforcement of development standards and coding conventions.

The Fly group is seeking a Senior Software Engineer to join a startup-like unit incubated under the CTO office. The team is developing Fly, the worlds first Agentic Artifact Repository. Fly delivers a "Zero Config" experience, allowing developers to move from code to production through seamless agentic flows.
This is a unique opportunity to operate with the agility of a startup while leveraging the backing of our established resources. We build on our industry-leading technology while owning and extending our own stack, enabling a fast pace of execution and the rapid introduction of new innovations into the product. We are designing a highly scalable, multi-tenant SaaS solution that integrates deeply within the broader developer ecosystem to deliver a seamless, plug-and-play experience.
As a Senior Software Engineer you will
Architect and build scalable, multi-tenant microservices that serve as the backbone of our SaaS platform.
Design and implement agentic workflows using LLMs, MCP, and AI agents.
Leverage advanced AI coding agents to accelerate development, writing context-aware, best-practice code across diverse technical domains.
Develop integrations bridging our platform with the external ecosystem, including GitHub, Kubernetes, and other development tools.
Drive key infrastructure and architectural decisions to ensure our system is performant, secure, and self-sustaining.
Collaborate with other teams to leverage the company's core infrastructure and shared services effectively.

We are looking for a passionate and talented Senior Software Engineer with passion to deliver a huge impact on our users day to day. This is a unique opportunity to join our fast growing R&D team where every person has a key influence on the product.

In this role, you will be responsible for the development, integration, and deployment of our AI insurance product, which leverages the newest LLMs technologies and automation. You will play a critical role in shaping our technical direction, fostering a collaborative and high-performance culture, and ensuring the successful delivery of products that will transform the insurance industry.

Responsibilities:
Design, develop, and maintain our scalable software applications.
Shape our AI capabilities, leverage LLM technologies and ensure creating best practices around them.
Lead the development of new features and enhancements while ensuring best coding practices.
Architect and implement robust, secure, and maintainable software solutions.
Collaborate with cross-functional teams, including product managers and designers to deliver high-quality software.
Conduct code reviews to other team members and ensure adherence to coding standards.
Evaluate and recommend new technologies, frameworks, and best practices.
Work closely with our product team to translate business requirements into technical solutions.
Support and maintain existing applications, resolving critical bugs and issues as needed.
Lead and contribute to agile development processes, including sprint planning and retrospectives.

We are looking for a passionate Senior AI-Native Backend Engineer to join our small, high-caliber team. You will design, develop, and deploy the core systems behind our real-time bidding engine - a Go-based service that processes over 2 million requests per second, running a multi-step pipeline of campaign selection, ML prediction, and bid calculation, all within single-digit milliseconds. You'll also build and maintain the surrounding infrastructure: data pipelines, configuration systems, ML serving layers, and internal tools - working across Go and Python in a microservice environment.
This is an amazing opportunity to join a multi-disciplinary A-team while working in a fast-paced, data-oriented environment. If you are experienced but hungry to learn and have outsized impact - wed love to have you on our team!
Design & build backend services of a cutting-edge consumer-facing product, designed to compete at the highest level with the worlds leading tech companies.
Work closely with data scientists and developers to understand the business from top-to-bottom and identify new modules that could turbocharge company processes
Improve our user-facing modules and tackle diverse issues like solving worldwide caching and optimizing page performance
Work on features that bring real-time data, analytics, and machine learning directly into the product, shaping how users interact with AI-driven functionality at scale.
Technological superiority is what gives us our edge so youll work and be up to date with the latest tech and trends

we are Senior Backend Developer.
What will you do:
Design, scale, and operate high-throughput, low-latency services to support high scale of ingestion, augmentation, continuous ML training, and real-time prediction.
Design, implement, deploy and own E2E Cloud clusters, services, and infrastructure to support extreme workloads and traffic flow while maintaining a lean design and low-maintenance architecture.
As all our systems are data-driven you will have an analytical aspect in measuring your modules both business and performance-wise
Build internal simulation tools and validation endpoints that let the team test changes against live traffic before they ship
Work side by side with data scientists and researchers - designing, implementing, and owning entire areas of the system from prototype to production
Technological superiority is what gives us our edge so youll work and be up to date with the latest tech and trends

Were looking for a Senior backend Engineer to join our founding team and play a key role in building the companys core technology from the ground up. In this role, youll take end-to-end ownership of our backend systems - from architecture and technical design, through hands-on development, to production and scale. Youll lead the creation of reliable, scalable foundations that bring our product vision to life. At our company, engineering goes far beyond writing code. Youll work closely with every function in the company to design and build systems that solve meaningful business problems and directly impact the product and users. This is a rare opportunity to set the bar for engineering excellence, influence key technical decisions, and help shape our engineering culture.
What You'll Do
* Build and lead complex, scalable backend systems that power our core web platform.
* Design and implement solid architectures with a strong focus on performance, reliability, and maintainability.
* Champion a "Full-cycle" engineering culture, owning everything from design to production-grade deployment
* Collaborate closely with engineering and product teams to ensure efficient, well-integrated systems across platforms.
* Continuously raise the bar on code quality, best practices, and engineering standards.

we are looking for a Senior Backend Developer.
What You'll Do:
- Take full ownership of end-to-end development of key features in identity and access management.
- Work with cutting-edge AI to enhance development and security workflows.
- Drive technical excellence and help shape the architecture of our platform.
- Collaborate with a small but strong team of 4 developers and a team lead, contributing your expertise and leadership to raise the technical bar.
- Optimize and scale authentication and authorization systems with OAuth, JWT, SAML, WebAuthn, and more.
- Build and optimize services using NestJS (Node.js), TypeScript, and AWS.
- Take ownership of complex challenges, working both independently and within the team.

A leading creative technology company on a mission to empower creators and brands to bring their vision to life with video. Offering cutting-edge AI tools and models for image, video, and voiceover creation, alongside high-quality creative assets and powerful editing tools, we enable creators to stay on trend, and achieve their creative goals. Trusted by over 30 million creators worldwide and top brands including Google, Amazon, Microsoft, and Versace, we provide a seamless, subscription-based platform with a global license, giving creators everything they need to produce professional video content efficiently.
We are looking for a Senior backend Engineer to join our new Platform Infrastructure team. In this foundational role, youll help build the shared backend systems, frameworks, and tooling that power every product across the company. If youre passionate about solving hard technical problems, shaping internal architecture, and scaling best practices across teams - we want to hear from you.
Wake Up for This
* Build for builders: Design and develop the backend infrastructure that other teams will rely on - from shared services and APIs to internal Developer tools and performance optimizations.
* Engineer at scale: Work across modern backend stacks, building reusable systems that balance flexibility with consistency.
* Drive technical standards: Partner with tech leads, designers, and developers across the company to define best practices and guide architectural decisions.
* Lead by example: Mentor other engineers, support their growth, and help raise the overall bar for backend quality and maintainability.
* Create real impact: Your work will improve development velocity, code quality, and User Experience for millions of creators and countless internal users.

we are looking for a Senior Backend Engineer.
What Youll Do:
Architect, design, and build high-performance, scalable backend systems.
Work with advanced algorithms, data structures & distributed computing.
Design and implement robust, secure APIs.
Use best practices to ensure flexibility, extensibility, and maintainability.
Develop SQL & NoSQL persistence solutions with optimal data modeling & performance.
Build and scale cloud-based infrastructures.

Were looking for a Senior Backend Engineer to join our growing team.
Responsibilities:
Design and build scalable backend services and APIs that power open security platform.
Develop serverless architectures on AWS, focusing on reliability, performance, and scalability.
Collaborate closely with product and security teams to translate requirements into clean, effective technical solutions.
Own delivery end-to-end: architecture, implementation, automated testing, CI/CD, and production monitoring.
Champion best practices around code quality, documentation, observability, and security-by-design.
Contribute to technical discussions and share knowledge with teammates on backend architecture, cloud infrastructure, and development best practices.

We are looking for a Python Expert to join our growing team!
This is a great opportunity to be part of one of the fastest-growing infrastructure companies in history, an organization that is in the center of the hurricane being created by the revolution in artificial intelligence.
Work in a team of top-of-the-line software engineers, developing state-of-the-art management systems for Cloud solutions managing mission-critical enterprise-level data platforms.
our management on Cloud systems include:
A highly scalable platform featuring complex high-availability mechanisms, and advanced APIs, interoperable with a diverse software ecosystem.
A cutting-edge AI-based cloud-operated SaaS.
Deploying our OS in all major hyper-scalers cloud vendors.

we are looking for a Senior Backend Engineer.
As a Senior Backend Engineer, you will play a pivotal role in shaping the architecture and evolution of our backend services. You'll work in a dynamic, collaborative environment where innovation and creativity are encouraged.
Your responsibilities:
Architect, develop, and test cloud-native microservices, ensuring they meet our high standards of scalability and reliability.
Deeply engage with a range of tech stacks, showcasing your expertise beyond a single framework-particularly in AI technologies, LLM frameworks and cloud infrastructure, including containerized environments like Kubernetes and Docker.
Collaborate closely with cross-functional teams, including sales and customer success, to ensure our solutions are perfectly tailored to customer needs.
Grow a culture of continuous learning and improvement, mentoring team members and guiding their professional development.
Design and build systems with security at the forefront, understanding and applying key security concepts to protect our customers and their data.

Join our fast growing team, and help put the power of automation in the hands of every security professional.
About the Role:
As a Senior Platform Engineer (Backend), you will play a key role in shaping the core infrastructure and architecture of our platform. You will be deeply involved in hands-on development, contribute to technical design, and help drive engineering excellence. In this role, you will collaborate with other engineers, share best practices, and take part in building scalable, high-quality backend systems.
Your responsibilities:
Design, develop, and test cloud-native microservices and backend components with high standards of scalability, reliability, and security
Own key areas of the platform's infrastructure and contribute to the architecture of enterprise-grade systems
Collaborate with engineering and product teams to translate business needs into robust technical solutions
Work across a modern tech stack including cloud services, Linux, Docker, Kubernetes, and CI/CD pipelines
Drive best practices in code quality, system design, observability (logs, metrics, tracing), and testing
Stay up to date with emerging technologies and help evaluate tools that support platform evolution
Share knowledge through code reviews and technical discussions, fostering a culture of continuous improvement

We are backed by top-tier global investors including Sequoia Capital, Ribbit Capital, and Cyberstarts-firms known for supporting the most innovative and influential companies in technology and cybersecurity
As a Backend Engineer, you will design, build, and scale the core backend systems that power our security platform-directly shaping the safety of millions of Web3 users. Youll work closely with a team of world-class engineers to deliver highly reliable, performant, and secure infrastructure.
Your Chain of Impact:
Lead feature development end-to-end, from requirements to production.
Build systems that protect millions of users from fraud, scams, and hacks.
Contribute across the full software development lifecycle in an agile environment.
Drive technical innovation by staying ahead of emerging technologies.
Uphold the highest standards of code quality, scalability, and performance.
Take true ownership of our product, tech stack, and development processes.