608 Network Protocols jobs in Singapore

• Design, implement, and maintain secure, high-availability network infrastructure across global data centers
• Take full ownership of firewall platforms
• Lead and contribute to data center buildouts and migrations

Job Summary

We are seeking an experienced Network Engineer with a strong background in firewalls, Cisco routing and switching, and data center build and migration projects. The ideal candidate will demonstrate deep technical expertise, a proactive approach to problem-solving, and a collaborative mindset for working across technology and business teams.

Key Responsibilities

· Design, implement, and maintain secure, high-availability network infrastructure across global data centers.

· Take full ownership of firewall platforms, including configuration of security policies, NAT rules, high availability (HA) clustering, and advanced troubleshooting.

· Lead and contribute to data center buildouts and migrations

· Manage and optimize Cisco routing and switching environments, including Catalyst, Nexus, and ASR platforms.

· Configure and troubleshoot core network protocols at Layer 2 and Layer 3 (VLAN, STP, OSPF, BGP, EIGRP).

· Work closely with cross-functional teams to ensure seamless project delivery.

· Ensure network reliability through proactive incident management and thorough root cause analysis.

· Oversee and deliver multiple projects concurrently, ranging from hardware upgrades to complex migration initiatives.

· Collaborate with external vendors and service providers for implementation support, issue resolution, and performance tuning.

· Maintain up-to-date documentation, including detailed network diagrams, configurations, and operational runbooks.

Key Qualifications

· Strong expertise with Juniper SRX firewalls, including complex security policy development, chassis clustering (HA), and deep packet inspection.

· Extensive hands-on experience with Cisco network infrastructure, particularly Nexus 5k/7k/9k switches, Catalyst series, and ASR routers.

· Strong grasp of data center networking principles, including Layer 2/Layer 3 segmentation, redundancy, and scalable architecture.

· Proven track record in delivering data center migration and build projects, with experience in change control processes, rollback strategies, and cross-functional coordination.

· Advanced knowledge of routing protocols (OSPF, BGP, EIGRP) and Layer 2 technologies (VLANs, STP, VTP).

· Skilled in troubleshooting and diagnostics, utilizing CLI tools, system logs, and packet analysis tools (Wireshark, flow capture)

· Experience with network management platforms, including Cisco Prime, SolarWinds, and Junos Space.

· Strong communication and documentation abilities, capable of translating complex technical issues into clear, actionable insights.

· Self-motivated and reliable, with the ability to manage priorities independently and thrive in a globally distributed team under time-sensitive conditions.

Good to Have

· Exposure to network automation using Python, Ansible, or REST APIs.

· Experience with virtualization technologies and fabric networks (vPC, VXLAN, VMware NSX).

We regret to inform that only shortlisted candidates will be notified / contacted.

EA Registration No.: CHOI RACHAEL , R25129167

Allegis Group Singapore Pte Ltd, Company Reg No. 200909448N, EA License No. 10C4544

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading at our own risk.

Headquartered in Chicago with offices throughout the U.S., Canada, Europe, and Asia, we trade a variety of asset classes including Fixed Income, ETFs, Equities, FX, Commodities and Energy across all major global markets. We have also leveraged our expertise and technology to expand into three non-traditional strategies: real estate, venture capital and cryptoassets.

We operate with respect, curiosity and open minds. The people who thrive here share our belief that it’s not just what we do that matters–it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus.

Our Network Infrastructure team works closely with trading desks and software engineers. They are the subject matter experts in the networking domain. They create tools using Python and automate tasks to streamline our environment. They are passionate about providing innovative solutions to our dynamic business. We are seeking a Network Engineer for our Singapore based Network Infrastructure Team.

As a Network Engineer at DRW, you will:

• Responsible for network architecture, implementation, and operations with the primary focus on APAC network infrastructure but also contributing to the other regions and the global DRW network.
• Work closely with our Operations Center to troubleshoot complex network infrastructure related issues.
• Partner with trading desks and business units to identify future projects and areas of improvement.
• Embrace and contribute to network automaton and monitoring.

Your background:

• Minimum 3 years of Network Engineering experience. Trading or finance industry experience is a plus.
• CCNA certification or equivalent experience.
• Have a relentless tenacity for solving complex technical problems when others would have long ago waived a white flag.
• Desire to learn Python, Golang, and other programming languages.
• Have a virtual tool belt of proven knowledge that encompasses many of the following areas: TCP/IP, BGP, OSPF, Multicast, Security, and more.
• Ok with some on-call, night and weekend work and not afraid to get your hands dirty (don't worry, we believe in planning these things to maintain balance across the team).
• Passionate about high-quality work and relentlessly pursue continuous improvement.
• Good with people; able to explain complex problems in a non-techie way for others to understand, both in writing and verbally.
• Want to be part of a great team. You enjoy sharing ideas, collaborating on projects, and having fun while doing it!

What you'll be working on:

• Collaborating with internal groups to gather requirements, propose designs, implement solutions and support our global environment.
• Using cutting edge networking equipment including routers, switches, timing servers, and more.
• Applying scripting languages to networking in order to build tools and automate (we like automation!).
• Improving our support tools and processes to enhance our monitoring and automation efforts.
• Contribute to networking projects using a team-oriented approach.

For more information about DRW's processing activities and our use of job applicants' data, please view our Privacy Notice at .

Accepted file types: pdf, doc, docx, txt, rtf

Enter manually

Accepted file types: pdf, doc, docx, txt, rtf

LinkedIn Profile

Website

Are you a foreign national requiring a work pass to work in Singapore? * Select.

Will you now or in the future require DRW to assist you with an application to the Ministry of Manpower for a work pass in respect of your prospective employment with DRW in Singapore? * Select.

If you are currently the holder of a valid work pass issued by the Ministry of Manpower, please provide details of such work pass including date of issuance, date of expiry, and your current employer.

How did you hear about this job? * Select.

Please provide additional detail if appropriate.

Legal First Name (if different from preferred name)

Legal Last Name (if different from preferred name)

Singtel is seeking a skilled Network Engineer to join our team. We are a leading telecommunications infrastructure provider in Singapore, committed to innovation in 5G, Cloud, Analytics, Digital Commerce, Software Engineering, and Cyber Security. Our goal is to deliver exceptional mobile and fixed services to our customers and to foster an inclusive, diverse, and collaborative work environment.

• Resolve complex network issues and meet customer needs.
• Collaborate with international customers and internal teams.
• Perform 24x7 shift duties and standby for ad-hoc activities as required.
• Coordinate with Singtel Business Units and overseas telcos for service maintenance.
• Troubleshoot Customer Premise Equipment such as routers and switches (Cisco & Juniper) with vendors.
• Serve as a technical escalation point for global corporate customers and internal staff.

• Bachelor’s degree in Telecommunication, Computer Science, or Computer Engineering; or relevant diploma with experience.
• Expertise in IP Routing protocols (BGP, OSPF, ISIS, etc.), MPLS, WAN, Ethernet, QoS, and Traffic Engineering.
• Minimum of 6 years supporting ISP or large enterprise networks in the IT/Telco industry.
• Certifications such as CCNP, CCIP, JNCIP, JNCIS are preferred.
• Knowledge of ITIL processes; ITILv3 certification is a plus.
• Hands-on experience with Juniper and Cisco routers and switches.

• Hybrid work arrangements
• Comprehensive health and wellness benefits
• Ongoing training and development programs
• Internal mobility opportunities

• Seniority Level: Mid-Senior level
• Employment Type: Full-time
• Job Function: Information Technology
• Industry: Telecommunications

Join us to create a brighter digital future. Apply now and unlock new opportunities with Singtel!

This role can be based in either Singapore or in the United States.

Ahrefs is seeking an experienced Network Engineer to join our team and help manage our large-scale distributed infrastructure. In this role, you will be responsible for the design, implementation, and maintenance of our network infrastructure, ensuring high availability, performance, observability, and security.

Our system is a big part of custom OCaml code and also employs third-party technologies - Debian, ELK, Puppet, Ansible and anything else that will solve the task at hand. In this role, be prepared to deal with 100+ petabytes storage cluster,3,000+ bare-metal servers , experimental large-scale deployments and all kinds of software bugs and hardware deviations on a daily basis.

• Design, implement, document, and maintain a robust and scalable network infrastructureto support Ahrefs' distributed crawler and web services
• Configure and manage network devices such as routers, switches, load balancers, aswell as Linux servers
• Improve and monitor network observability and performance, troubleshoot issues relatedto network connectivity, latency, and throughput for network devices and servers
• Implement network security measures, including firewalls, VPNs, and access control lists
• Collaborate closely with the infrastructure team to ensure seamless integration betweennetwork and server infrastructure
• Participate in the on-call rotation to provide 24/7 support and incident response
• Automate network management tasks and develop scripts to improve efficiency

• Deep understanding of network protocols on different levels (TCP/IP , BGP , OSPF , etc.)and network architectures
• Extensive experience with network devices and network operating systems from majorvendors (e.g., Cisco, Juniper, NVIDIA)
• Strong knowledge of network security principles and best practices
• Proficiency in network automation tools (e.g., Ansible, Puppet, Python, Bash scripting)
• Experience with virtualization technologies (e.g., VLANs, VXLANs, GRE tunnels)
• Familiarity with cloud networking concepts and services (e.g., AWS VPC, Azure VirtualNetwork)
• Strong troubleshooting and problem-solving skills
• Excellent communication and documentation skills
• Bachelor's degree in Computer Science, Information Technology, or a related field

• Experience working with bare-metal servers and large-scale distributed systems
• Knowledge of Linux operating system internals and kernel-level networking
• Familiarity with monitoring and logging tools (e.g., ELK stack, Prometheus, Grafana)
• Experience with OCaml or other functional programming languages is a bonus

Ahrefs runs an internet-scale bot that crawls the whole web 24/7, storing huge volumes of information to be indexed and structured in a timely fashion. Our backend system is powered by a custom petabyte-scale distributed key-value storage to accommodate all that data coming in at high speed. With this data, Ahrefs builds analytics services for end-users in the Search Engine Optimization (SEO) space and a web-scale search platform.

We are a lean and robust team who strongly believe that better technology leads to better solutions for real-world problems.

Our motto is "first do it, then do it right, then do it better".

Ahrefs does not engage with agencies or third party recruitment solutions for the roles we hire for. If at any point we need help, we'll let you know!

Ahrefs runs an internet-scale bot that crawls the whole web 24/7, storing huge volumes of information to be indexed and structured in a timely fashion. Our backend system is powered by a custom petabyte-scale distributed key-value storage to accommodate all that data coming in at high speed. With this data, Ahrefs builds analytics services for end-users in the Search Engine Optimization (SEO) space and a web-scale search platform.We are a lean and robust team who strongly believe that better technology leads to better solutions for real-world problems.

Our motto is first doit, then do it right, then do it better

Who are we looking for?

BlockTech is a high-paced algorithmic trading firm facilitating global trading in cryptocurrency while expanding into regulated markets. We are growing like never before and we are looking for a Senior Network Engineer who wants to join us in this exciting scale-up phase!

What will you do?

At BlockTech we build the development and production environment ourselves using mainly Free and Open Source software. This way, we are in control and able to switch tactics fast. At the same time, we have quite some systems to set up and maintain.

As a Network Engineer, you are responsible for all networks. Everything is built on top of Linux, from the workstations to the production systems using a mix of container and virtualization technologies. Because the company is growing, there is room for improvement which means that you can make a great impact by improving the current infrastructure and building new solutions.

In a nutshell, you will:

1. Build a fast and highly available production setup with low latencies to the exchange
2. Work closely with our traders, engineers and quantitative developers to identify and solve issues that arise
3. Design and create new technical solutions
4. Improve, maintain and monitor the network

What is in it for you?
- A permanent full-time position in a relaxed and trendy office located in the heart of Singapore's financial district (CBD)
- A competitive base salary combined with a very attractive bonus plan based on your performance as well as the company’s results
- Additionally, outstanding performance is rewarded with the opportunity to buy into the trading fund
- Laptop, home office budget and transportation allowance
- Breakfast and warm lunch. Additionally, snacks and drinks are provided throughout the day.
- The opportunity to use state-of-the-art technology
- Extensive in-house training program in combination with an annual learning & development budget.
- Reimbursement of gym membership, sports events, the opportunity to do sports during working hours, and unlimited access to a psychologist.
- Regular social events, including bi-annual trips abroad, frequent outings, and weekly Friday drinks
- For internationals: All-in relocation package

Our culture

At our core, we are a team of passionate trading and tech enthusiasts committed to revolutionizing trading through automation. Our collaborative approach ensures that everyone contributes to achieving our ambitious goals.

In this role, you will be both challenged and stretched, with ample opportunities for growth and development, both within and beyond your main responsibilities.

We invest in our people by offering competitive compensation and benefits, fostering innovation, and celebrating success. Our commitment to personal development transcends traditional norms; we provide an equal playing field, promote reverse leadership, and offer boundless growth opportunities for all our employees.

Join us to unlock your potential and drive innovation in the exciting world of algorithmic trading.

Minimum Requirements:

1. High professional education thinking level
2. At least 5 years experience as a System/Network Engineer
3. At least 3 years of experience with Linux
4. Experience with Cisco (ideally CCNP) and/or Arista
5. A creative and critical mind who follows things until completion and comes up with new ideas
6. The ability to work independently and within a team of engineers across time zones
7. Eagerness to learn new things
8. A positive can-do attitude
9. Good communication skills in English, both spoken and written
10. AWS and AliCloud experience is a plus

Virtu is a leading financial firm that leverages cutting edge technology to deliver liquidity to the global markets and innovative, transparent trading solutions to our clients. As a market maker, Virtu provides deep liquidity that helps to create more efficient markets around the world. Our market structure expertise, broad diversification, and execution technology enables us to provide competitive bids and offers in over 19,000 securities, at over 235 venues, in 36 countries worldwide.

THE ROLE

Virtu is looking for a visionary Senior Network Engineer to join our global network engineering team. In this role, you'll help to define and lead our world leading network platform to grow alongside our ever expanding trading business. You will be working at the forefront of the world’s financial markets, building connectivity across the globe, and integrating some of the most complex networks in the financial services industry.

Additional duties include:

1. Design, implement and operate Virtu's network. Whether it is investigating a new, innovative products, refreshing one of our low latency trading systems or troubleshooting with a 3rd party, you'll thrive on being impactful within a fast-moving, varied environment.
2. Transforming our way of working at scale. We know the network industry is changing, and this is your chance to make that change, collaborating with software engineers with proven track records of solving complex problems through software.

THE CANDIDATE

• Required skills:
• 5+ years of experience in network engineering
• Some Real-world network automation experience
  • Configuration Management – one of Ansible/Salt/Puppet/Chef
  • Python (or other programming languages)
• Expert in routing and switching – BGP/OSPF/Multicast
• Deep understanding of TCP/IP and the OSI model
• Good prioritization skills and the ability to effectively switch tasks on varying projects and initiatives
• Excellent communication and writing skills
• Humility
• A love of technology in general
• Highly desired skills:
• Comfortable working with various Linux utilities and different OS
• SQL
• A bachelor’s degree, preferably in IT, Computer Science or other related discipline

PERKS OF THE ROLE:

• Projects with quick life cycles, from concept to production in three months
• The opportunity to make an impact in a highly visible role within the firm
• A great place for upward and geographic mobility
• Direct exposure to the decision makers and senior leaders on the business side
• A company that’s investing a sizable amount in its technology department
• Teams that are passionate about continually learning, improving and raising the bar
• A community that values hard work as well as work-life balance

After passing an initial resume screening, candidates will be sent an online network engineering test. We look forward to meeting you.

Virtu Financial is an equal opportunity employer, committed to a diverse and inclusive workplace, welcoming you for who you are and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Working in the engineering team, the senior network engineer have extensive knowledge and experience in installation, termination of network equipment (Copper & Fiber Outlet, patch panel and cable management). He/ She will possess hands-on experience in testing & programming of network switch, router, WLAN controller, AP and firewall. He/ she have relevant system architect in data center infrastructure design and implementation including server (VMware), SAN storage and network.

Responsibilities

1. Take ownership of system design & implementation to make a truly access and complete of client requirements until full closure of the project delivery.

2. Conduct factory acceptance test in the workshop, providing FAT report.

3. Deliver customer training, presentation and support.

Key Deliverables

1. Functional Design

2. Infrastructure Block Diagram

3. System Termination Diagram

4. Network, Server & Storage Configuration profile

5. Infrastructure Security policy profile

6. FAT procedure & report

7. SAT procedure & report

Job Specifications

1. Minimum Bachelor in computer science, network or equivalent technical discipline.

2. Proven 5 years’ experience in a similar role & responsibility

3. Well organized documentation, objective driven, time-sensitive and resourceful.

4. CISCO certified (CCNP preferred)

5. NetApp / EMC certified (NetApp NCDA preferred)

6. VMWare certified (VCIX6-DCV preferred)

Join to apply for the Network Engineer role at KLA

Join to apply for the Network Engineer role at KLA

Get AI-powered advice on this job and more exclusive features.

Company Overview

KLA is a global leader in diversified electronics for the semiconductor manufacturing ecosystem. Virtually every electronic device in the world is produced using our technologies. No laptop, smartphone, wearable device, voice-controlled gadget, flexible screen, VR device or smart car would have made it into your hands without us. KLA invents systems and solutions for the manufacturing of wafers and reticles, integrated circuits, packaging, printed circuit boards and flat panel displays. The innovative ideas and devices that are advancing humanity all begin with inspiration, research and development. KLA focuses more than average on innovation and we invest 15% of sales back into R&D. Our expert teams of physicists, engineers, data scientists and problem-solvers work together with the world’s leading technology providers to accelerate the delivery of tomorrow’s electronic devices. Life here is exciting and our teams thrive on tackling really hard problems. There is never a dull moment with us.

Company Overview

KLA is a global leader in diversified electronics for the semiconductor manufacturing ecosystem. Virtually every electronic device in the world is produced using our technologies. No laptop, smartphone, wearable device, voice-controlled gadget, flexible screen, VR device or smart car would have made it into your hands without us. KLA invents systems and solutions for the manufacturing of wafers and reticles, integrated circuits, packaging, printed circuit boards and flat panel displays. The innovative ideas and devices that are advancing humanity all begin with inspiration, research and development. KLA focuses more than average on innovation and we invest 15% of sales back into R&D. Our expert teams of physicists, engineers, data scientists and problem-solvers work together with the world’s leading technology providers to accelerate the delivery of tomorrow’s electronic devices. Life here is exciting and our teams thrive on tackling really hard problems. There is never a dull moment with us.

Group/Division

The Information Technology (IT) group at KLA is involved in every aspect of the global business. IT’s mission is to enable business growth and productivity by connecting people, process, and technology. It focuses not only on enhancing the technology that enables our business to thrive but also on how employees use and are empowered by technology. This integrated approach to customer service, creativity and technological excellence enables employee productivity, business analytics, and process excellence.

Job Description/Preferred Qualifications

• Design and deploy functional networks (LAN, WAN, WLAN, SDWAN).
• Configure and install routers, switches, wireless, SDWAN and other network devices.
• Monitor network performance and troubleshoot issues.
• Ensure network connectivity and performance across all company systems.
• Provide onsite support for the Campus and Data Center.
• Collaborate with network team members on network optimization and scaling.
• Maintain accurate documentation of network configurations, procedures, and service records.
• Provide Level 4/5 support and troubleshooting to resolve issues.
• Liaise with vendors and other IT personnel for problem resolution.
• Stay current with industry trends and emerging technologies.
  
  
  

• Bachelor’s degree in Computer Science, Information Technology, or a related field (or equivalent experience).
• 5-10 years related work experience with proven experience as a Network Engineer.
• Valid CCNP or CCIE Certificate in Enterprise Network or Data Center.
• Solid understanding of network operating systems (Cisco IOS, Wireless, Arista EOS, SDWAN., etc.).
• Hands-on experience with monitoring, network diagnostic and network analytics tools.
• Strong knowledge of networking technologies (routing, switching, firewalls, VPNs).
• Experience with Cisco, Arista hardware.
• Familiarity with cloud networking (AWS, Azure, or Google Cloud) is a plus.
  
  
  

• Seniority level Mid-Senior level

• Employment type Full-time

• Job function Information Technology
• Industries Semiconductor Manufacturing

Referrals increase your chances of interviewing at KLA by 2x

Get notified about new Network Engineer jobs in Singapore, Singapore .

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

Responsibilities

· Configure, manage, and troubleshoot Bluecoat ProxySG appliances, Zscaler, and Management Console.

· Develop and implement proxy policies including URL filtering, proxy bypass, and forwarding rules.

· Set up and maintain SSL interception and decryption in compliance with security and privacy standards.

· Utilize diagnostic tools and Splunk to analyze proxy logs, troubleshoot issues, and optimize configurations.

· Ensure compliance with relevant data protection laws and regulatory standards regarding web traffic.

· Plan and execute security-related projects, ensuring timely delivery and stakeholder alignment.

· Communicate effectively with technical and non-technical stakeholders to provide updates, insights, and recommendations.

Requirements

· Bachelor’s degree in Computer Science, Information Technology, or a related field.

· Proven experience with Bluecoat ProxySG configuration and management.

· Strong skills in creating and managing web proxy policies.

· Proficiency in SSL interception setup and management.

· Hands-on experience with Splunk for log analysis and issue resolution.

· Familiarity with data protection regulations and compliance frameworks.

· Excellent problem-solving and communication skills.

· Experience in project planning and stakeholder management.