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Senior React/JS Frontend Engineer - Data Viz & UI/UX

Career Opportunities at Bequant
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Bequant is a growing technology start‑up focused on innovative network optimization products. We are looking for talented individuals to join our engineering and support teams.

Technical Support Engineer – LATAM

We are looking for a Technical Support Engineer, working remotely, to support our software product for customers in LATAM and the USA, where we have a large installed base.

Contact:

Responsibilities

  • Provide technical support and maintenance of our software product.
  • Test and diagnose possible failures in the product.
  • Plan and carry out deployment of our products in customer networks.

Minimum Qualifications

  • BSc degree (or equivalent) in Computer Science, Electrical Engineering, Telecommunications Engineering, or a related field.
  • Linux system administration experience, especially related to networking and diagnosing hardware problems.
  • Network administration experience, including switch and router operation.
  • Experience with scripting in sh/bash and Unix tools such as awk, iproute2, ethtool, tc, etc.
  • Experience with virtual environments: KVM, VMware or VirtualBox.
  • Knowledge of network protocols (IP, ICMP, TCP, LACP, MPLS, etc.) and experience interpreting tcpdump.
  • Native or very high level of Spanish (fluent in reading, writing and speaking).
  • Proficient in English (fluent in reading, writing and speaking).

Desired Qualifications

  • Proficient in Portuguese (fluent in reading, writing and speaking).
  • Experience in C/C++ programming.
  • Experience in Python, Perl, Awk and JavaScript programming.
  • Experience with UNIX development tools such as git, make, gdb, perf, etc.
  • Knowledge of other languages, apart from Spanish, Portuguese and English.

Competitive Salary

  • Competitive salary.
  • Work with a top‑level engineering group in a successful technology start‑up.

Job reference:

Senior Frontend Software Engineer – React / JS + UI/UX (Madrid, Hybrid)

You will be a key designer and developer of the user interface for our network optimisation product, developing new data‑visualisation and real‑time control functionality, and implementing an appealing UI/UX.

Responsibilities

  • Develop new data visualization and real‑time control functionality for our product.
  • Design an appealing and consistent UX/UI for our product.
  • Participate in the ongoing migration of our Graphical User Interface from native JavaScript and jQuery to a React framework.

Minimum Qualifications

  • Bachelor's degree in Computer Science or a related field.
  • 10+ years of software development experience.
  • Expert skills in vanilla JavaScript and jQuery programming.
  • Expert skills working in React with recent experience in ES6.
  • Expert skills in HTML5, CSS3 and Bootstrap.
  • Working experience with Node.js.
  • Significant experience with data visualization libraries for browsers, like D3.
  • Experience with React UI component libraries like MUI.
  • UX/UI experience.
  • Experience with Linux development environment and tools (including Git).
  • Linux system administration skills for managing your Linux laptop.
  • Proficient in English (fluent in reading, writing and speaking).
  • EU nationality or Spanish work permit already granted.

Desired Qualifications

  • Experience with Test‑Driven Development (TDD) and TypeScript.
  • Experience with scripting in sh/bash shell and Linux tools (awk, sed, etc.).
  • Experience with imaging tools: GIMP, Inkspace, etc.
  • Experience with virtual environments (KVM, VMware or VirtualBox) and containers (Docker, Kubernetes).

We Offer

  • Full‑time indefinite‑term employment contract.
  • Competitive salary (60K€ – 100K€, depending on experience and qualifications).
  • Work with a top‑level engineering group in a successful technology start‑up.

Job reference:

Senior Software Engineer – C/C++ Development (Madrid, Hybrid)

In this role you will be part of the core software engineering team and will participate in the design and development of our product. We have a data‑plane packet gateway that can reach 150 Gbps with sophisticated processing and we want to add more data processing to reach >1 Tbps.

Responsibilities

  • Design and develop the core part of our software product, expanding the data‑plane packet gateway capabilities.
  • Debug and resolve issues with our software product.
  • Adapt and optimise our software for different hardware and virtual platforms.

Minimum Qualifications

  • Master's degree in Computer Science or a related field.
  • 10+ years of software development experience.
  • Expert skills in C and C++ programming and data structures.
  • Experience with IPC and multi‑process environments.
  • Deep understanding of the Linux operating system internals/kernel.
  • Experience with scripting in sh/bash and awk.
  • Experience with Linux networking tools (iproute2, tc, iptables, ethtool).
  • Experience with Linux development tools (git, make, gdb, perf, gprof, etc.).
  • Proficient in English (fluent in reading, writing and speaking).
  • EU nationality or Spanish work permit already granted.

Desired Qualifications

  • Experience in network programming with DPDK.
  • Experience with virtual environments (KVM, VMware or VirtualBox).
  • Knowledge of network protocols (IP, ICMP, TCP, PPPoE, 802.3ad, etc.) and experience interpreting tcpdump.
  • Experience in Python, Perl and JavaScript programming.
  • Experience in network programming with AF_PACKET/AF_XDP and multi‑threaded environments.
  • Linux/BSD kernel development or debugging experience.
  • Familiarity with containers (e.g. Kubernetes) and Linux namespaces.

We Offer

  • Full‑time indefinite‑term employment contract.
  • Competitive salary (60K€ – 100K€, depending on experience and qualifications).
  • Work with a top‑level engineering group in a successful technology start‑up. xqbhyrx

Job reference:

Headquarters

L located in downtown Madrid, our offices are easily accessible by public transportation and surrounded by a variety of restaurants and stores.

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