Role : Data Infrastructure / Platform Engineer (External Consultant)
Location: Belgrade (Hybrid)
Job Overview
We are looking for a skilled Data Infrastructure / Platform Engineer to join our Data Infrastructure team. In this role, you will help design, operate, and secure a modern data platform supporting large-scale data processing, streaming, and analytics workloads.
You will work closely with DevOps, Data Engineering, and Security teams to ensure the platform is reliable, scalable, and secure.
What You’ll Do
Platform & DevOps Engineering
Deploy and operate Kubernetes clusters using Rancher
Configure Kubernetes networking (e.g., Calico)
Automate deployments using Helm and GitLab CI/CD
Provision and manage infrastructure with Terraform and GitOps workflows
Build automation scripts, agents, or background services
Develop and support internal tools and lightweight GUIs for platform control and monitoring
Ensure high availability, scalability, and security of the platform
We are looking for a Medior CRM Developer to join our client’s CRM development team in Serbia. The ideal candidate will have strong experience in modern web technologies and backend services, with a solid understanding of scalable, secure, and high-performance applications.
Key Responsibilities
Design, develop, and maintain CRM applications and services
Build and consume web services using REST and SOAP
Develop scalable and secure public-facing web applications
Collaborate with cross-functional teams including product, QA, and DevOps
Participate in code reviews, testing, and continuous improvement
Contribute to system performance, reliability, and security enhancements
Qualifications & Skills:
3+ years of professional software development experience
Excellent knowledge of ReactJS and NodeJS
Strong experience with Web Services (SOAP & REST)
Proficiency in XML, JSON, and HTTP/HTTPS protocols
Mandatory experience with SQL databases: MySQL, PostgreSQL, Oracle, or MSSQL
Solid understanding of algorithms, data structures, OOP, design patterns, and integration patterns
Strong knowledge of HTML5 and CSS3
Working knowledge of PHP
Experience using Git, JIRA, CI/CD tools, Kibana, and Elasticsearch
Good command of English (written and spoken)
Nice to Have
Experience with Express.js or NestJS frameworks
Knowledge of TypeScript, Flux, and Redux
Familiarity with Linux OS (RedHat/CentOS)
Experience working on high-traffic, transaction-heavy systems
We are looking for a skilled L3 Support Specialist with expertise in Billing/Kenan systems. The ideal candidate will be responsible for ensuring smooth system operations, handling critical incidents, and providing expert-level support for billing processes.
We are seeking a strategic, client-focused, and results-driven Performance Marketing Manager to lead and manage key paid media accounts. The ideal candidate will be responsible for driving the performance marketing strategy, overseeing campaign delivery, and ensuring client satisfaction through continuous performance optimization and operational excellence. This role acts as the primary point of contact for clients and plays a critical role in account planning, execution, and growth.
Key Responsibilities:
1. Strategy Development & Execution
Partner with the PPC Director and clients to develop comprehensive performance marketing strategies aligned with business goals.
Ensure campaigns are executed to plan, meet defined KPIs, and follow best practices across platforms (Google, Meta, Programmatic, etc.).
Translate client objectives into actionable plans and performance roadmaps.
2. Campaign & Account Management
Lead the day-to-day execution of campaigns including planning, optimization, reporting, and performance tracking.
Maintain accountability for on-time, in-budget delivery of all campaign activities.
Regularly review and improve campaign structures, bid strategies, targeting, and creatives to maximize efficiency.
3. Client Communication & Relationship Management
Act as the subject matter expert (SME) and primary point of contact for clients on performance-related discussions.
Lead weekly and monthly client meetings, performance reviews, and strategic planning sessions.
Build and sustain strong client relationships through proactive communication and delivery excellence.
4. Cross-Functional Collaboration
Work closely with Account Directors to identify and drive account growth opportunities.
Collaborate with Client Servicing and cross-channel teams (SEO, Social, Analytics, Creative) to ensure strategic alignment and integrated delivery.
Share insights and learnings across teams to drive innovation and elevate digital performance maturity.
5. Reporting & Insights
Deliver regular and ad hoc reports with actionable insights that demonstrate campaign impact and opportunities for improvement.
Use tools such as Google Analytics, Google Data Studio, and platform-specific dashboards to analyze data and generate recommendations.
Required Skills & Qualifications:
3–5 years of hands-on experience in performance marketing with a strong background in Paid Search, Paid Social, and/or Programmatic.
Proven track record of driving measurable results and successfully managing client accounts.
Strong communication and client-facing skills with experience presenting to senior stakeholders.
Expertise in tools such as Google Ads, Meta Ads Manager, Google Analytics, and campaign management platforms (e.g., SA360, DV360).
Excellent problem-solving, analytical thinking, and project management abilities.
Ability to mentor junior team members and coordinate cross-functional collaboration.
Preferred Qualifications:
Bachelor’s degree in Marketing, Business, Communications, or a related field.
Certifications in Google Ads, Meta Blueprint, or other media platforms.
Prior experience in a media agency or digital consultancy.
Role : Senior Software & Systems Engineer – Semiconductor Failure Analysis Tools
NO VISA SPONSERSHIP IS AVAILABLE –
Please apply only if you have GC/Citizenship
Overview:
Join a specialized engineering team in San Jose, California! We develop cutting-edge, multi-million-dollar diagnostic tools used by top semiconductor manufacturers. Our instruments integrate advanced laser scanning microscopy, photon emission analysis, and CAD navigation to identify defects at the transistor level—accelerating silicon debug and improving yield.
As a Senior Software & Systems Engineer, you’ll go far beyond traditional software development. You’ll design complex control software that synchronizes lasers, motion stages, and high bandwidth electronics, while visualizing signals and images for expert fault analysis.
This role requires deep knowledge of semiconductor device physics, precision instrumentation, and software-hardware integration.
Key Responsibilities
Develop and maintain software that controls high-precision optical and electronic instrumentation for semiconductor failure analysis.
Collaborate with hardware engineers and Failure Analysis experts to translate complex physical diagnostics into user-friendly software tools.
Design responsive control systems that interface with CAD databases (e.g., Synopsys Avalon) for real-time navigation and transistor-level targeting.
Build high-performance GUIs (C#/WPF) to visualize diagnostic data such as photon emission, waveforms, and device maps.
Lead integration efforts across motion control, laser timing, optical subsystems, and signal acquisition tools (e.g., oscilloscopes, source meters).
Troubleshoot complex system-level interactions and drive performance optimization. • Document architecture, workflows, and test plans to ensure reliability and maintainability.
Required Qualifications
Bachelor’s or Master’s degree in Electrical Engineering, Physics, or Semiconductor Device Engineering.
5+ years of experience developing control software for scientific or diagnostic instruments in the semiconductor space.
Strong programming skills in C++, C# and WPF on Windows platforms.
Solid understanding of semiconductor device physics and failure mechanisms.
Experience working with CAD navigation tools like Synopsys Avalon.
Preferred Experience
Hands-on experience with techniques such as TIVA, LIVA, LADA, OBIRCH, or photon emission.
Experience with laser microscopy or optics-based instrumentation.
Familiarity with hardware interfaces (USB, PCIe, FPGA, RS-232/485).
Previous roles at companies like ThermoFisher, Hamamatsu, or others in the semiconductor equipment space.
Real-time data processing and high-performance visualization for complex datasets.
What Sets This Role Apart
Unique Domain: Work on systems that combine optics, electronics, CAD data, and real time software in one integrated tool.
Critical Impact: Your software will help validate designs and locate defects that affect billions of devices.
Challenging Tech Stack: Blend real-time hardware control, high-resolution visualization, and precision diagnostics in a single system.
Cross-Disciplinary Collaboration: Work closely with experts in optics, electronics, and semiconductor failure analysis.
Medical (PPO & HMO), Dental, Vision & Life Insurance – Effective first of the month following date of hire
401(k) Plan – Eligible after 90 days of employment
Flexible Spending Account (FSA) – Eligible after 90 days of employment
Quarterly Bonus Program
PTO (16 days per year)
Benefits found in job post
401(k)
Requirements added by the job poster
Authorized to work in the United States
10+ years of work experience with Silicon Photonics
10+ years of Semiconductor Manufacturing experience
10+ years of work experience with C#
10+ years of work experience with Windows Presentation Foundation (WPF)
The JAVA Specialist works on problems of diverse scope where analysis of data requires evaluation of identifiable factors. Strong knowledge in Java technologies and debugging code is a must-have. Demonstrates good judgment in selecting methods and techniques for obtaining solutions. Networks with senior internal and external personnel in own area of expertise. The specialist works on the migration efforts of critical, industry-class, in-house, or commercial products as well as tooling for use in project work. Good grip of ANTLR programming.
Experience: 7+ Years
Essential Duties and Responsibilities
Expert-level Java knowledge and debugging.
Help keep Java libraries in sync by porting code from other technologies.
Extend runtime Java libraries with new functionality, which typically is re-implementing functionality found in legacy systems, but now in a Java environment
Help create custom plugins (mostly in Java) for existing tools, to help with project-specific needs
Willing to work in both Java and C# (50%-50%)
Both Java and C#, we use core technology and no specific/latest framework – so should be interested in working with it
In-depth understanding of object-oriented concepts
Deliver within the scope of the project, within the scope of a Factory project, while not compromising on quality.
Work closely with team members and clients to achieve desired results.
Thrive in an environment of collaboration and change.
Mentor junior team members on Mainframe migration
Identify and bridge the knowledge gap among team members from different backgrounds, like Java, Mainframe, etc.
Thrive in an environment of collaboration and change.
Learn the Astadia Factory tools to perform mainframe transformations
Expert database development knowledge.
SQL development
Understanding of database concepts
Ability to create/maintain database objects
Query tuning
Database locking
Extend existing conversion tools (e.g. COBOL to Java, JCL to PowerShell, …), by extending their grammars and conversion rules
A plus for the role is some experience with mainframe application technologies (COBOL, CICS, DB2, etc), and the ability to understand the transformation from a legacy code set to a modern code set
Scripts/Python development experience will be an advantage
Education and Experience
BE in Computer Science or equivalent work experience.
7+ Years of Development professional experience in Java experience
Excellent written and verbal communication skills
Need to know the differences between Java 8, 17, and 21
Interest in learning about legacy technologies, as the libraries typically implement functions available in these legacy technologies
SQL development.
In-depth understanding of Java OO concepts
Experienced in unit testing, test-driven development, integration testing, and deployment using cloud technologies.
Certifications in any cloud technologies.
Experience with Waterfall and Agile Development Methodologies.
The Specialist works on problems of diverse scope where analysis of data requires evaluation of identifiable factors. Strong knowledge of C# technologies, as well as debugging code, is a must-have. Demonstrates good judgment in selecting methods and techniques for obtaining solutions—networks with senior internal and external personnel in own area of expertise. The specialist works on the migration efforts of critical, industry-class, in-house, or commercial products as well as tooling for use in project work.
Experience: 7+ Years
Essential Duties and Responsibilities
Expert level C# knowledge and debugging.
Help keep C# libraries in sync by porting code from C#, or vice versa.
Extend runtime C# libraries with new functionality, which typically is re-implementing functionality found in legacy systems, but now in a C# environment
C# Fundamentalsexpertise with hands-on experience is a must
Help create custom plugins for existing tools, to help with project-specific needs
In-depth understanding of object-oriented concepts
Willing to work in both Java and C# (50%-50%)
Both Java and C#, we use core technology and no specific/latest framework – so should be interested in working with it
Deliver within the scope of the project, within the scope of a Factory project, while not compromising on quality.
Work closely with team members and clients to achieve desired results.
Thrive in an environment of collaboration and change.
Mentor junior team members on Mainframe migration
Identify and bridge the knowledge gap among team members from different backgrounds, like C#, Mainframe, etc.
Profile the migrated application to detect any performance problems and improvements in the C# code, or in the support libraries used by this code
Expert database development knowledge.
SQL development
Understanding of database concepts
Ability to create/maintain database objects
Query tuning
Database locking
Thrive in an environment of collaboration and change.
Learn the Astadia Factory tools to perform mainframe transformations
A plus for the role is some experience with mainframe application technologies (COBOL, CICS, DB2, etc), and the ability to understand the transformation from a legacy code set to a modern code set
Experienced in unit testing, test-driven development, integration testing, and deployment using cloud technologies
Scripts/Python development experience will be an advantage
Education and Experience
BE in Computer Science or equivalent work experience.
7+ Years of Development professional experience of NET/C# experience
Excellent written and verbal communication skills
Need to know differences between .NET Framework and .NET (core), C# 8 – 13
Interest in learning about legacy technologies, as the libraries typically implement functions available in these legacy technologies
Certifications in any cloud technologies.
Experience with Waterfall and Agile Development Methodologies.
The Developers work on problems of diverse scope where analysis of data requires evaluation of identifiable factors. Strong knowledge of C# technologies, as well as debugging code, is a must-have. Demonstrates good judgment in selecting methods and techniques for obtaining solutions—networks with senior internal and external personnel in own area of expertise. The developer has to work on the migration efforts of critical, industry-class, in-house, or commercial products as well as tooling for use in project work.
Experience: 5+ Years
Essential Duties and Responsibilities
Expert level C# knowledge and debugging.
Help keep C# libraries in sync by porting code from C#, or vice versa.
Extend runtime C# libraries with new functionality, which typically is re-implementing functionality found in legacy systems, but now in a C# environment
C# Fundamentalsexpertise with hands-on experience is a must
Help create custom plugins for existing tools, to help with project-specific needs
In-depth understanding of object-oriented concepts
Willing to work in both Java and C# (50%-50%)
Both Java and C#, we use core technology and no specific/latest framework – so should be interested in working with it
Deliver within the scope of the project, within the scope of a Factory project, while not compromising on quality.
Work closely with team members and clients to achieve desired results.
Thrive in an environment of collaboration and change.
Mentor junior team members on Mainframe migration
Identify and bridge the knowledge gap among team members from different backgrounds, like C#, Mainframe, etc.
Profile the migrated application to detect any performance problems and improvements in the C# code, or in the support libraries used by this code
Expert database development knowledge.
SQL development
Understanding of database concepts
Ability to create/maintain database objects
Query tuning
Database locking
Thrive in an environment of collaboration and change.
Learn the Astadia Factory tools to perform mainframe transformations
A plus for the role is some experience with mainframe application technologies (COBOL, CICS, DB2, etc.), and the ability to understand the transformation from a legacy code set to a modern code set
Experienced in unit testing, test-driven development, integration testing, and deployment using cloud technologies
Scripts/Python development experience will be an advantage
Education and Experience
BE in Computer Science or equivalent work experience.
5+ Years of Development professional experience in NET/C# experience
Excellent written and verbal communication skills
Need to know differences between .NET Framework and .NET (core), C# 8 – 13
Interest in learning about legacy technologies, as the libraries typically implement functions available in these legacy technologies
Certifications in any cloud technologies.
Experience with Waterfall and Agile Development Methodologies.
Strong object-oriented programming and debugging skills.
SQL development
Willing to learn Mainframe Technologies (COBOL, CICS, JCL, DB2, etc)
The JAVA Specialist works on problems of diverse scope where analysis of data requires evaluation of identifiable factors. Strong knowledge in Java technologies and debugging code is a must-have. Demonstrates good judgment in selecting methods and techniques for obtaining solutions. Networks with senior internal and external personnel in own area of expertise. The specialist works on the migration efforts of critical, industry-class, in-house, or commercial products as well as tooling for use in project work. Good grip of ANTLR programming.
Experience: 5+ Years
Essential Duties and Responsibilities
Expert-level Java knowledge and debugging.
Help keep Java libraries in sync by porting code from other technologies.
Extend runtime Java libraries with new functionality, which typically is re-implementing functionality found in legacy systems, but now in a Java environment
Willing to work in both Java and C# (50%-50%)
Both Java and C#, we use core technology and no specific/latest framework – so should be interested in working with it
Help create custom plugins (mostly in Java) for existing tools, to help with project-specific needs
In-depth understanding of object-oriented concepts
Deliver within the scope of the project, within the scope of a Factory project, while not compromising on quality.
Work closely with team members and clients to achieve desired results.
Thrive in an environment of collaboration and change.
Mentor junior team members on Mainframe migration
Identify and bridge the knowledge gap among team members from different backgrounds, like Java, Mainframe, etc.
Thrive in an environment of collaboration and change.
Learn the Astadia Factory tools to perform mainframe transformations
Expert database development knowledge.
SQL development
Understanding of database concepts
Ability to create/maintain database objects
Query tuning
Database locking
Extend existing conversion tools (e.g. COBOL to Java, JCL to PowerShell, …), by extending their grammars and conversion rules
A plus for the role is some experience with mainframe application technologies (COBOL, CICS, DB2, etc), and the ability to understand the transformation from a legacy code set to a modern code set
Scripts/Python development experience will be an advantage
Education and Experience
BE in Computer Science or equivalent work experience.
5+ Years of Development professional experience in Java experience
Excellent written and verbal communication skills
Need to know the differences between Java 8, 17, and 21
Interest in learning about legacy technologies, as the libraries typically implement functions available in these legacy technologies
SQL development.
In-depth understanding of Java OO concepts
Experienced in unit testing, test-driven development, integration testing, and deployment using cloud technologies.
Certifications in any cloud technologies.
Experience with Waterfall and Agile Development Methodologies.
We are seeking a highly skilled and motivated Sr Software Developer in Test (SDET) to join the device engineering team. This role focuses on designing and implementing complex automation frameworks and test systems to validate key product features across devices. You will work closely with the test architect to expand test coverage and innovate new testing methodologies that ensure product quality and performance.
Key Responsibilities:
Develop robust and scalable automation frameworks to validate device features.
Integrate test execution and results collection using Windows Test Technologies (WTT).
Use PowerShell to orchestrate test setup, log collection, and basic system actions.
Leverage Python to bridge Azure data pipelines, perform log analysis, and apply machine learning techniques where applicable.
Store and manage test measurements and results in Azure.
Collaborate with the test architect to define new test strategies and extend coverage programmatically.
Track work items and bugs using Azure DevOps (ADO).
Present bi-weekly progress updates to senior leadership, highlighting key metrics, blockers, and accomplishments.
Required Qualifications:
Strong programming skills in Python and PowerShell.
Experience with Azure services, especially for data storage and analytics.
Familiarity with WTT or similar test execution frameworks.
Solid understanding of software testing principles, automation, and validation strategies.
Experience with Azure DevOps for work item and bug tracking.
Excellent communication skills and ability to present technical updates to leadership.
Preferred Qualifications:
Experience in hardware/software integration testing.
Exposure to machine learning applications in test analysis.
Prior experience working in a product development environment, preferably in consumer electronics or embedded systems.
Design, build, and maintain scalable network automation solutions using Ansible and Python.
Automate deployment and configuration of network functions and services across traditional hardware and cloud-native platforms like Kubernetes and Red Hat OpenShift.
Create CI/CD pipelines and automation frameworks to support agile delivery of network changes and services.
Collaborate with cross-functional teams (network, cloud, DevOps, and systems) to integrate automation across IMS, core network, and cloud-native components.
Support the onboarding and management of CNFs (Cloud-Native Network Functions) in Kubernetes/OpenShift environments.
Develop APIs, tools, and integrations to improve operational workflows and orchestration.
Participate in design reviews and ensure solutions meet reliability, performance, and compliance standards.
Document automation architecture, playbooks, scripts, and deployment strategies.
Strong proficiency in: Ansible (playbooks, roles, dynamic inventories)Python (network automation libraries like Netmiko, Nornir, or PyATS)Working knowledge of Kubernetes and/or Red Hat OpenShift in production or lab environments.Familiarity with container-based networking, CNF onboarding, Helm charts, and Kustomize.Understanding of IMS core components (e.g., CSCF, HSS, SBCs, Diameter/SIP protocols) and their role in VoLTE/VoNR environments.Experience with network vendor devices (Cisco, Juniper, Nokia, etc.) and their automation interfaces (CLI, NETCONF, RESTCONF).Comfortable working in Linux environments with Git for version control and collaborative development.
What does a typical day look like? (daily tasks)
Creating and sustaining network automation for alarms, system checks, and routine tasks.
Preferred background/prior work experience?
3+ years of hands-on experience in network automation or DevOps.
Priority soft skills
Written and spoken communication, self-starter/initiative, and ability to work with others.
We believe in harnessing the potential of individuals to create exceptional outcomes. Our culture thrives on bold ideas, collaborative energy, and the constant pursuit of excellence. The opportunities here are not just career-based—they are paths for growth, innovation, and impact.
With a multinational presence spanning continents, Zenith offers a truly global experience, connecting you with diverse teams, groundbreaking projects, and clients from around the world. Beyond work, we provide a flexible, supportive environment that values your personal growth as much as your professional achievements.
At Zenith, your next step isn’t just another job—it’s a leap toward creating your best work, contributing to a bigger purpose, and shaping the future of innovation.
