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At our company, were building the future of retail - and our Enterprise Supermarkets team plays a critical role in shaping how the largest retail chains operate and grow on our platform.
We are looking for a Retail Development Specialist to join a senior team managing our companys most strategic supermarket partnerships in Israel. This is not a traditional sales role - it is a highly operational, analytical, and partner-facing position focused on driving performance, improving processes, and leading strategic retail partnerships end-to-end.
In this role, you will manage a portfolio of 3-4 enterprise supermarket partners, acting as the main business owner for each account. You will work closely with store teams, operational stakeholders, and senior HQ management to improve performance, solve operational challenges, and drive sustainable growth across the partnership.
What youll be doing
Own the end-to-end management and development of strategic enterprise supermarket accounts on our company.
Analyze business and operational performance to identify growth opportunities, bottlenecks, and operational inefficiencies.
Lead proactive operational improvement initiatives with field stakeholders such as pickers, store managers, and operations teams, focusing on topics like picking times, rejection reasons, availability, and fulfillment quality.
Conduct trainings and onboard partners on our companys operational tools, workflows, and advanced platform capabilities.
Build and maintain strong relationships with senior stakeholders at partner headquarters, including leading quarterly business reviews and strategic discussions.
Drive commercial and marketing initiatives together with partners, including campaigns, assortment optimization, storefront visibility, and growth opportunities.
Handle complex escalations and coordinate cross-functional problem solving, including cases involving technical or operational issues.
Conduct regular visits to supermarket branches across Israel to support operational excellence and partner success.
Monitor KPIs and performance metrics using BI and analytics tools, translating data into actionable business insights.

we are looking for a talented, hands-on and experienced DevOps Engineer to join our Operations team.

In this role, you will be responsible for ensuring the availability, reliability, and scalability of our production environments, proactively monitoring systems in real time and troubleshooting complex technical challenges. Youll work with modern cloud-native technologies, help improve operational efficiency, and play a key role in maintaining and evolving our infrastructure.

This is an opportunity to work on a fascinating and challenging product, gain exposure to innovative and diverse technologies, and join a fast-growing company that is leading its field. At Upstream, we invest in our people and support both personal and professional growth.

Were looking for someone with strong technical skills, a positive mindset and a constant drive for excellence.

This is a full-time, hybrid role based in Herzliya, Israel.

Responsibilities
Implement and operate large-scale Kubernetes and cloud solutions
Build and maintain infrastructure across AWS / Azure / GCP
Monitor customer infrastructure and production environments
Roll out processes for new services and applications
Enforce and maintain cloud and product security standards
Troubleshoot and resolve technical issues in customer environments
Develop and maintain infrastructure automation tools and workflows
Implement automation processes and AI-driven tools to improve operational efficiency

we are looking for a talented Application Security Specialist to join our team. In this role, you will take an active part in application penetration testing, threat modeling, Secure SDLC activities, and AppSec initiatives that help evaluate and improve security posture. The position includes hands-on security testing of web, mobile, API, thick client, AI/LLM integrations, and MCP-based application components, identifying and validating vulnerabilities, assessing real business impact, supporting customers with clear remediation guidance, and contributing to application security processes, tools, and best practices.

Responsibilities
Perform hands-on application penetration testing across web, mobile, API, thick client, AI/LLM integrations, and MCP-enabled application components.

Perform threat modeling and secure design reviews to identify risks early in the development lifecycle.

Support development teams with practical remediation guidance and secure implementation recommendations.

Perform Secure Software Development Lifecycle and secure coding training for developers.

Evaluate and improve customers application security development lifecycle, including secure coding practices, vulnerability management, remediation workflows, and security gates.

Participate in client-facing discussions, including assessment scoping, finding walkthroughs, remediation alignment, and retest updates.

we are looking for a security architect to join our team! 
Responsibilities
Perform security maturity assessments, including reviews of organizational policies, standards, procedures, and governance practices, aligned with the NIST CSF 2.0 cybersecurity framework.

Review designed or deployed environments, identifying security flaws and recommending mitigations plans

Review Implementation of technical security controls, identify gaps and offer practical mitigations.

Escort, evaluate and improve our clients security posture by elevating their infrastructure resilience and implement best-practice organizational procedures

Escort mitigation plans and design practical implementations for security issues e.g., firewall policies review, segmentation & segregation recommendations, Microsoft AD-tier Model implementation etc.

Research and advocate for new security solutions and technologies

we are seeking a Cybersecurity Architect (GRC & Risk) to join our cybersecurity architecture team. In this role, you will lead security governance, risk, and control assessments, conduct third-party due diligence, support maturity assessments, and drive mitigation and architectural review processes. Youll work closely with CISOs, security leaders, engineering teams, and customers to develop risk-focused methodologies and improve security frameworks. This position is best suited for candidates with a technical GRC, risk, or security assessment background who excel in analysis, interpretation, and structuring of security information.

Responsibilities
Lead customer third‑party security due diligence assessments.
Lead mitigation workshops to translate penetration test and assessment findings into prioritized remediation workplans.
Perform security maturity assessments, including reviews of organizational policies, standards, procedures, and governance practices, aligned with the NIST CSF 2.0 cybersecurity framework.
Develop and refine security methodologies, processes, and architectural guidance.
Maintain internal documentation and ensure alignment between frameworks, processes, and practical implementation.
Analyze technical findings and map them to governance, risk, and control gaps.
Produce clear, structured reports and executive‑ready summaries for technical and non‑technical audiences.

we are looking for a Cyber Security Expert with hands-on experience in offensive security, possessing strong technical capabilities, in-depth knowledge of adversary simulation, and a passion for Red Team operations.
Responsibilities
Participate in Red Team assessments that simulate real-world threats and remain undetected by the client's defensive team. These stealth operations simulate advanced adversaries and require careful planning, execution, and OPSEC
Lead or co-lead portions of internal and external offensive assessments, including perimeter exploitation and post-exploitation in Active Directory
Perform Purple Team engagements to help clients improve their monitoring and detection capabilities while sharpening your own offensive skills
Document attack paths, risk analysis, technical findings and remediation guidance in detailed reports tailored to both technical and executive audiences.
Collaborate with the team to develop and maintain internal tooling, scripts, and documentation for offensive operations
Continuously research and test new techniques, tools, and attack paths to further enhance Red Team capabilities

As a DFIR team member, you will participate in hands-on security research and investigations, helping our customers understand and mitigate cyber threats and attacks.

Responsibilities
Perform incident response lifecycle and real-time activities, including detection and analysis, containment and eradication, and recovery
Perform incident response in a cloud environment (Azure, AWS etc.).
Perform digital forensics investigations
Research and analyze tactics, techniques, and procedures (TTPs) used by malicious actors
Perform hunt-evil and find-evil activities for proactively detecting attacks
Work closely with our in-house red team, CTI, and cyber architect teams
Work closely with worldwide companies, CISOs, and technology experts

we are seeking a Junior Cybersecurity Architect to join our cybersecurity architecture team. In this role you would assist with enterprise level organizations' white-box maturity assessments, preform due-diligence assessments and help in designing actionable mitigation plans to identified risks to push forward our clients security program. This role is intended for candidates with a technical GRC, risk, or security assessment background who are strong in analysis, interpretation, and structuring of security information. You will work closely with CISOs, security leadership, engineering teams, and external customers, collaborating with senior security stakeholders as part of a versatile, and collaborative architecture team. The position emphasizes risk‑oriented thinking, security assessment methodologies, and architectural review over hands‑on technical configuration or operational security work.

Responsibilities
Support customer third‑party security due diligence assessments.

Support or lead mitigation workshops to translate penetration test and assessment findings into prioritized remediation workplans.

Analyze technical findings and map them to governance, risk, and control gaps.

Review Implementation of technical security controls.

Perform security maturity assessments, including reviews of organizational policies, standards, procedures, and governance practices, aligned with the NIST CSF 2.0 cybersecurity framework.

Produce clear, structured reports and executive‑ready summaries for technical and non‑technical audiences.