395 Network Protocols jobs in Singapore

We are seeking an experienced Senior Quality Assurance Engineer to lead the development and implementation of automated testing framework for our Lightway VPN protocol, which is implemented using Rust. In this role, you will be responsible for ensuring the quality, performance, and security of both the Lightway client and server by building scalable and efficient automated tests. Your work will directly contribute to the quality of our VPN service and help ensure that our Lightway protocol is secure, reliable, and performant across different environments and network conditions.

• Automated Testing Frameworks:
  
  Design, develop, and maintain automated testing frameworks specifically for the Lightway VPN protocol built in Rust across multiple platforms (Windows, Linux, macOS, iOS, and Android). Ensure that automated tests cover all aspects of the protocol, including client-server interactions, encryption, connection stability, and performance.
• End-to-End Automation:
  
  Build and automate end-to-end test cases to validate the complete functionality of the Lightway VPN protocol. This includes creating tests for various networking scenarios, failover handling, and performance under load.
• Security Testing:
  
  Develop and execute security tests to assess potential vulnerabilities in the Lightway protocol. Ensure that encryption, authentication, and other security mechanisms are thoroughly validated and perform to the highest industry standards.
• Performance Testing:
  
  Conduct performance and stress testing to validate the protocol's scalability, stability, and resource usage. Simulate high traffic loads, variable network conditions, and large-scale deployments to identify bottlenecks and optimize performance.
• CI/CD Integration:
  
  Integrate the automated test suite into our CI/CD pipeline, enabling continuous testing with every code change. Ensure that testing is fully automated as part of the development and release process, reducing manual effort and improving release velocity.
• Collaboration with Development Teams:
  
  Collaborate closely with the Rust development team to understand protocol requirements, identify test coverage gaps, and ensure alignment with the product's quality goals. Provide feedback and recommendations on code quality, testability, and design.
• Documentation and Reporting:
  
  Create and maintain detailed documentation on the test strategy, test cases, results, and best practices for automated testing. Regularly report test coverage, defects, and any risks or concerns to stakeholders.
• Continuous Improvement:
  
  Continuously evaluate and improve the test automation framework, ensuring it remains scalable and adaptable to future protocol enhancements or changes. Stay up-to-date on the latest testing tools, best practices, and Rust-related testing techniques.

• Education:
  
  Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent work experience.
• Experience:
  • 5+ years of experience in Quality Assurance and Automated Testing of Network protocols.
  • Experience testing networking protocols (VPN, TCP/IP, DNS, HTTP/HTTPS).
  • Proven experience with automated testing tools (e.g., Selenium, JUnit, TestNG, pytest, Rust-based testing frameworks).
  • Familiarity with CI/CD pipelines and testing in an Agile environment.
• Technical Skills:
  • Programming/Scripting languages: Strong proficiency in scripting languages (e.g., Python, Bash).
  • Deep understanding of networking technologies (e.g., VPNs, IPSec, TLS, HTTP/HTTPS).
  • Experience with performance testing tools.
  • Familiarity with version control systems (e.g., Git).
• Security & Compliance Knowledge:
  
  Experience with security testing practices and tools, including assessing encryption, authenticity, and confidentiality in network protocols.
• Problem-Solving & Analytical Skills:
  
  Strong ability to analyze complex issues and design effective automated test solutions, especially for low-level networking and protocol implementations.
• Communication Skills:
  
  Excellent verbal and written communication skills to effectively report issues, write clear test documentation, and collaborate with development and management teams.

• Attention to Detail:
  
  High attention to detail, ensuring that all edge cases, security vulnerabilities, and performance bottlenecks are identified and addressed.
• Collaboration & Teamwork:
  
  Strong ability to work in a cross-functional environment with developers, product managers, and other teams to achieve shared goals and improve the product.
• Critical Thinking:
  
  Logical and analytical thinking with a focus on solving complex problems and optimizing testing approaches for a high-performance system like Lightway.

• Innovative Product: Work on Lightway, a cutting-edge, open-source VPN protocol built in Rust, which focuses on speed, security, and reliability.
• Career Growth: As a key member of a fast-growing team, you'll have plenty of opportunities to learn, grow, and contribute to high-impact projects.
• Collaborative Environment: Join a talented team of developers, and security experts working together to improve the state of online privacy and security.
• Competitive Compensation & Benefits: Competitive salary, comprehensive benefits, flexible work schedules, and remote work options.

Computational Communication Specialist

We are seeking an accomplished professional to lead our computational communication efforts. This role involves leveraging data science and analytics to drive strategic decision-making and enhance research capabilities.

This is a tenure-track position that requires expertise in one or more areas, including media studies, visual communication, science communication, cultural studies, and computational communication. The ideal candidate will have experience with computational techniques using R or Python and the ability to teach courses in computational communication, social media research, network analysis, and/or time series analysis.

• Leverage data science and analytics to drive strategic decision-making and enhance research capabilities.
• Develop and implement computational communication strategies to meet organizational goals.
• Collaborate with cross-functional teams to design and deliver data-driven solutions.
• Teach courses in computational communication, social media research, network analysis, and/or time series analysis.
• Maintain expertise in emerging trends and technologies related to computational communication.

The ideal candidate will have a PhD in Communication or closely related discipline by date of appointment, with a specialisation in methods for digital data collection, analytics, and/or visualisation. Evidence of excellence in computational communication research and teaching is essential.

This role offers a competitive remuneration package, including medical, housing, relocation, and other benefits. Significant research start-up funding is available, enabling you to pursue innovative projects and collaborations.

Interested applicants should submit their application directly through our career portal. Application dossiers should include a brief cover letter, comprehensive CV, research statement, and two signature publications. A list of six references should be provided, highlighting your achievements and qualifications in computational communication research and teaching.

Be part of a dynamic team and take on the challenge as a Billing Officer where you will be responsible for generating and sending accurate invoices to customers or clients, ensuring that billing is done according to company policies, client agreements, and payment terms.

Key Responsibilities:

• Generate and send invoices to customers or clients.
• Ensure billing accuracy and completeness by reviewing client accounts and billing histories.
• Correct billing errors and discrepancies promptly.

Responsibilities (Continued):

• Input billing data into the accounting or billing system.
• Maintain detailed records of transactions, invoices, and payment histories.
• Ensure client and payment information is up to date in the system.

Customer Service:

• Address and resolve client billing inquiries and disputes.
• Provide support to clients regarding billing and payment concerns.
• Assist clients with setting up payment plans or resolving issues related to their invoices.

Reporting and Compliance:

• Prepare and generate regular reports on billing and payment statuses for management.
• Assist in reconciling accounts receivable balances.
• Maintain accurate records to assist in the preparation of financial reports.

Requirements:

• At least 1 year of experience in billing, invoicing, or accounts receivable preferred.
• Proficient in Microsoft Excel and comfortable handling data entry and reports.

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.

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

Join to apply for the Network Engineer role at Internal Security Department .

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

ISD confronts and addresses threats to Singapore’s internal security and stability. For over 75 years, ISD and its predecessor organisations have played a central role in countering threats such as those posed by foreign subversive elements, spies, racial and religious extremists, and terrorists. A fulfilling and rewarding career awaits those who want to join in ISD’s critical mission of keeping Singapore safe, secure and sovereign for all Singaporeans.

You will be part of a team responsible for the planning, design, project implementation, operation, and support of network infrastructure that provides end-users at different locations with secure and reliable connectivity to the organisation's wide range of applications and digital services. As a member of a technically competent team, you will be involved in delivering various network solutions to address the organisation's long-term operational needs, as well as ad-hoc requests from end-users.

• Manage end-to-end lifecycle of organisation’s network infrastructures, from planning and design to implementation and operation.
• Evaluate and implement new network solutions that enhance the capability, security, and manageability of network infrastructures.
• Participate as a member of business-specific projects, providing network consultancy and technical support during project implementation.
• Manage network infrastructure projects, including procuring network solutions, working with vendors to ensure timely completion, and engaging stakeholders through presentations or reports to provide status updates.
• Administer network equipment such as routers, firewalls, IDS, encryptors, DHCP, etc.
• Respond to and resolve network-related incidents, providing timely updates to stakeholders on findings and remediation actions.
• Monitor networks, analyze utilization trends, and offer data-driven recommendations to optimize network performance.
• Perform firmware or software updates following change management procedures.

• Degree in Computer Science, Computer Engineering, or related field; equivalent competencies are also considered.
• Minimum 2 years of relevant experience in network infrastructure operation and deployment.
• Cisco certifications such as CCNA, CCNP, or CCIE are advantageous.
• Strong knowledge of LAN, WAN, SDN, internet routing, and related network technologies.
• Experience in contract and vendor management.
• Good interpersonal and stakeholder management skills.
• Excellent written and verbal communication skills, with the ability to present effectively to both technical and non-technical audiences, including senior management.
• Highly committed and motivated, willing to work odd hours when required.
• Familiarity with Government ICT environment, policies, and standards.
• Only Singaporeans need apply.

We wish to inform you that only shortlisted candidates will be notified.

• Entry level

• Full-time

• Information Technology

• Government Administration and Industrial Machinery Manufacturing

Referrals increase your chances of interviewing at Internal Security Department by 2x.

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

• Analyse network traffic patterns across identified routes.
• Collect specific measurements across identified routes for analysis.
• Conduct a network infrastructure analysis.
• Conduct threat assessment matrix on network.
• Configure Authentication, Authorisation and Accounting (AAA) services to support remote access protocols based on security requirements.
• Configure a network addressing system.
• Configure hosts and workstations to use IP addresses either manually or through automatic allocation of addresses.
• Configure network devices to provide secure failover and redundancy.
• Debug networking issues to maintain wireless connection.
• Escalate network performance issues to relevant personnel.
• Evaluate user requirements and recommend network protocol services.
• Identify the network components that are required to be installed.
• Install and configure access point to provide wireless access to network.
• Install and configure the components.
• Install firewall appliance for attack guards and intrusion detection.
• Monitor wireless network performance using diagnostic tools.
• Operate network monitoring tools to monitor network performance against thresholds and Quality of Service (QoS).
• Plan control methods for the network for user access management.
• Review network traffic problems with relevant parties for resolution.
• Test the overall network to verify that it meets the agreed requirements.

Job Requirements:

• Diploma or University Degree holder
• Cisco Certificate
• Knowledge in routing, switching, SD-WAN, and vendor technologies (Cisco, Fortinet, etc.)
• Knowledge of Server Architecture such as SANs, Citrix, AD;
• Knowledge in Microsoft server applications, Microsoft Azure Platform as a Service and Microsoft Azure Infrastructure as a Service
• Any relevant professional qualifications are considered an advantage

Summary:

We are seeking a Network Engineer to design, implement, and support network and infrastructure solutions for large-scale transportation systems. The role involves producing detailed network designs, coordinating with internal teams, customers, and vendors, and overseeing implementation, testing, and commissioning activities. The ideal candidate will bring strong technical expertise in IP/MPLS, SDH, 4G/5G, and cybersecurity, with experience in mission-critical infrastructure projects.

Requirements:

• Produce detailed design, specifications, and costing for network and infrastructure solutions.
• Interface with customers, internal engineering teams, and vendors for design and product definition.
• Evaluate and recommend suitable network products and systems.
• Lead testing and commissioning activities, ensuring compliance with project requirements.
• Track progress of design and interface tasks, ensuring timely delivery of documentation and deliverables.
• Perform network troubleshooting, issue analysis, and capacity optimization.
• Implement cybersecurity measures including system hardening, firewalls, and antivirus solutions.
• Develop automation scripts for configuration and deployment.
• Support structured cabling, fibre/copper design, and wireless (4G/5G/Wi-Fi) networks.
  Ensure efficient execution of assigned tasks with minimal supervision.

Qualifications:

• Degree in Electrical, Electronic, or Telecommunications Engineering.
• Professional certifications preferred: CCNA, CCNP, CCDA, HCIA, HCIP, JNCIE, or equivalent vendor certifications.
• Strong knowledge of SDH, SR-MPLS, MPLS-TP, IP/MPLS, Ethernet, and cable network design
• Experience with virtualization platforms (VMware, Windows, Linux).
• Skilled in network administration, troubleshooting (Wireshark), and security design.
• Strong problem-solving skills, analytical thinking, and the ability to work independently or collaboratively.

• Design and optimise network infrastructure: Implement and tune high-speed network systems to support ultra-low-latency trading applications and services.
• Troubleshoot and resolve issues: Diagnose, troubleshoot, and resolve complex network infrastructure problems to ensure maximum availability and performance.
• Operational support: Provide day-to-day support for both network and application environments, monitoring connectivity and responding to alerts or incidents as needed.
• Technology evaluation: Continuously evaluate emerging networking technologies and service providers (hardware, software, or carriers) to keep our trading infrastructure cutting-edge and cost-effective.
• Travelling across multi-sites within APAC and the US is required for the position.
• Willing to perform hands-on data centre work, including installation, maintenance, and break-fix support for hardware such as network switches, firewalls, and servers.

• Cisco networking expertise: Extensive experience with Cisco Catalyst (IOS) and Nexus (NX-OS) switches, including configuration and management.
• Firewall proficiency: Proven ability to configure and manage Fortinet FortiGate firewall platforms.
• Layer 2 protocols: Strong understanding of Layer 2 switching protocols such as VLANs, Spanning Tree (STP), and Link Aggregation (LACP).
• Routing protocols: Solid grasp of routing protocols, including OSPF and BGP, and first-hop redundancy protocols (FHRP) such as HSRP/VRRP.
• VPN technologies: In-depth knowledge of IPsec VPN and SSL VPN architectures and configurations.
• Data centre networking: Familiarity with data centre features such as Virtual Port Channels (vPC) for enhanced redundancy and throughput.

• High-performance networks: Proven expertise in deploying large-scale, high-performance computing (HPC) network infrastructure using RDMA over Converged Ethernet (RoCEv2).
• Advanced networking technologies: Hands-on experience with cutting-edge network technologies such as dark fibre (DWDM) optical networks, advanced QoS implementation, and multicast routing.

• Highly competitive salary.
• Group Medical & Dental Insurance for all employees and their dependents.
• Meal Allowance during work hours.