דרושים » תוכנה » Backend Developer

We are looking for a Senior Backend Engineer to join our R&D team in developing the new rising product in the health landscape.

As a Senior Backend Engineer at Lumen, you will have an impact on how we architect, build, scale, and maintain our backend systems. You will provide technical guidance and mentorship to other engineers on the team, help establish and maintain best practices for development, and participate in the development of the companys technological roadmap. Youll solve complex engineering challenges and drive engineering excellence in a dynamic environment and rapidly increasing scale.

Our ideal candidate has a real passion for making a positive change in the world, for technology and customers, has great communication skills, and loves to constantly improve themselves, our working practices, and our code base.

This is a great opportunity to join the core team of a growing, successful startup and work with the most advanced technologies.



Responsibilities

Lead/Participate in system design and architecture discussions.
Implement and own infrastructure and features; be involved and impact the entire product lifecycle (concept, design, test, release, and production support).
Teach, mentor, grow, and provide advice to other domain experts and individual contributors.
Acquire an in-depth understanding of our technical challenges and strive to improve them.
Play a central role in technical, business, and organizational contributions.
Be a vocal advocate for technical excellence and help the team members make sound decisions.
Work with product managers, data scientists, and other team members to understand the desired requirements and provide your feedback to improve the outcome of the feature.

we are looking for an experienced Backend Developer that lives and breathes technology to join our team. In this role, you will be responsible for designing and implementing backend systems that connect and integrate with customer environments. You will work closely with customers, field engineers, and product teams and be an integral part of the thought and design process of our methodologies and practices which guide us in the critical path of customer onboarding, integration and data flow. The role requires creativity, research and problem-solving skills as well as deep technical knowledge and the ability to deep-dive into complex and difficult problems.
What you will do:

Design and implement backend systems that connect and integrate with customer environments

Identify, collect and model data from large-scale environments

Stay up-to-date with industry trends and advancements in backend development

Develop reliable production-grade code which will run side-by-side with customer applications in scale

Dive into a world of endless technologies and explore the latest and greatest cutting-edge software programming languages and frameworks

Collaborate with the product team to create a seamless integration and onboarding process for our customers, including designing the workflow and features that will make the experience as smooth and efficient as possible

Develop key components in the companys architecture, supporting complex use-cases for the present and future

Develop concurrently at immense scale, with billions of requests for hundreds of customers every day

Lead major changes, taking initiative and influencing the products technical and business growth

Work with your teammates to guide R&D through the evolution of the platform, advising and influencing at every scope

Take end-to-end responsibility for your code, through development, testing, rollout and scale-up

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.

We are looking for a Staff Backend Developer to join our Ads team, where we build the real-time systems that power our global advertising platform. This is a high-scale, low-latency environment - processing billions of requests daily to deliver fast, relevant ads to players around the world. Our backend infrastructure is designed for reliability and scalability, ensuring seamless ad delivery and optimal performance even under heavy traffic. As part of the team, you will work on distributed systems that handle real-time ad requests, impression tracking, and user data analytics with strict requirements for uptime and security. You'll play a critical role in optimizing performance, maintaining service availability, and supporting the development of new monetization features for game developers worldwide. Security, data privacy, and a positive user experience are central to everything we build.
You'll help modernize the legacy tech stack and the core services behind ad delivery, bidding, reporting, and analytics. This is a great opportunity for an engineer who's excited to work on performance-critical systems, collaborate across teams, and grow in a fast-paced environment, all at a turning point in the company.
What you'll be doing:
Design, build, and modernise backend services and APIs that support ad delivery
Work on scalable, high-availability systems used across our ads ecosystem
Collaborate with engineers, product managers, and data teams to deliver new features
Improve performance, observability, and cost-efficiency of current backend systems, modernising the legacy stack
Contribute to architectural decisions and technical direction of the platform.

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 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 seek a Senior Full-Stack Engineer to join our R&D web team.

In this role, youll work alongside top-tier developers to design, build, and deliver scalable, cloud-based solutions that power our core products. Youll be deeply involved in all stages of development from ideation to deployment

A day in the life and how youll make an impact:

Creating and owning end-to-end features for various web projects, leveraging microservice architecture, cloud functions, and API services
Maintaining and improving code quality and stability, with a focus on multi-tenancy security and user management systems
Leading cross-team technical design discussions on application architecture, UI components, UX, back-end and third-party integration, and testing
Leading and accompanying new products and features from prototype to production, utilizing mono repo architecture and event-sourcing principles
Working closely with customers to gather insights on how to improve the product
Participating in the design and development of cloud-based systems, using GCP cloud functions and Firebase
Ensuring the implementation of robust DRP data recovery systems and pain testing
Developing and maintaining multiple UI applications, using the latest Angular version (19), Flutter, Material Design, and Bootstrap

As a backend software engineer at PayMe, youll become a valuable member of an innovative and fast-growing department, working in a truly Agile environment. You will build FinTech products that help our clients as well as our internal departments to expand PayMes ecosystem and make an impact on our business daily.

We believe that developers should take full ownership of their work: from the initial feature planning phase alongside Product and Design; choosing the right technologies, designing the code and architecture; coding; PRing; and all the way to actual deployment in CI/CD environment, as well as post-deployment monitoring. It is all your responsibility.

Whether you enjoy writing complex business logic in the backend, take pleasure in writing clean and high-quality code, or tweaking infrastructure to perform well at scale, we encourage you to get your hands dirty end-to-end.

Collaborate with the rest of the engineering and product managers teams to design and launch new features end-to-end.

Our Stack:
PHP 7, Laravel, MariaDB, AWS, RabbitMQ, Docker, Elasticsearch, Redis, Linux.

As a team member in a growing startup, your impact on the company is unbound: our team not only implements the plan, but actually creates the plan, engages with customers and product management, defines testing and execution methodologies, according to each core team member's strong suites and preferences. We believe in distributed decision making, and we expect high investment in developer experience, test automation, and overall quality of architecture and code.

Responsibilities
Hands-on end-to-end development, including DevOps tasks and automated testing
Work in a cloud-native environment (Azure), microservices architecture, cutting-edge technologies, and a quality-first mindset
Deliver UI components and full screens - taking wireframes from design to full implementation
Design and improve our developer experience (DX), system architecture, and product infrastructure
Collaborate closely with the core team, participate in code reviews, interviews, and task prioritization
Take ownership and responsibility - your impact will grow as the company scales
Tackle scalability and performance challenges as we grow and our user base expands

We are looking for an experienced Software Engineer to join our great Backend Engineering team.The team faces complex engineering issues on a daily basis, both solving new challenges and constantly improving the existing solutions. We work with all major cloud providers (AWS, GCP, Azure) and use cutting-edge technologies such as Kubernetes, Docker, Neo4j, ElasticSearch, Redis, TimescaleDB, RabbitMQ, and more.
Responsibilities:
Responsible for the entire lifecycle of the projects, from initial design and development to deployment, monitoring and maintenance in the production environment
Contributing to technological and architectural decisions
Conducting design and code reviews
Analyzing and improving efficiency, scalability, and stability of various backend system components
Interfacing with other teams (e.g. Frontend, DevOps) to deliver best-in-class features.