VoIP Software Engineer

2 tygodni temu

centrum Gdańsk, Polska Sigma IT Poland Pełny etat

Sigma IT Poland is a division within DANIR AB – an IT consulting and R&D company. We opened our Wroclaw office in 2017 and our Warsaw office in 2022; now we are a 120+ crew. We have the opportunity to work with world-renowned brands from Scandinavia, the USA, the UK, and Western Europe. Our goal is to grow strong but rather in competencies than in numbers. If you like what we do, see our offer, maybe it is you we will have the pleasure to meet

We are looking for a VoIP Software Engineer, who will develop and maintain code that will be used in controlling the hardware and software functions of the Residential Gateways. The products powered by developed solutions comprise multiple technology domains such as Linux Kernel, Network (WiFi, DSL, VoIP, etc.), Containerization, Internet of Things, and Cloud Management. You will take part in the full development process: function specification, design, coding, test automation, and documentation.

The work is performed closely with other parts of the organization, such as product management and customer support which leads to a good understanding and an overall impression of the full projects and products.

We believe you are a versatile and pragmatic professional with a genuine interest in technology. You are interested in continuously updating your knowledge and improving your skills. In the role as a VoIP software engineer there will be great opportunities to utilize a multitude of skills, primarily software design and implementation but also profiling and optimization, troubleshooting, debugging and tracing, requirement analysis, and more.

Tasks:

  • Software development for VoIP (Asterisk, eVoice);
  • Debugging your own and others' code;
  • Troubleshooting;
  • Technical Documentation (English) – read and write;
  • Support architectural decisions.

We offer a choice of employment form: B2B or Employment Contract:

  • UoP: – PLN gross/month
  • B2B: 100 – 145 PLN net/hour + VAT

You might be the perfect match if you are/have:

  • MS or BS in Computer science or equivalent;
  • 5+ years experience with SIP/RTP and other real-time communication protocols;
  • Experience with open-source VoIP stacks in a Linux environment (preferably Asterisk);
  • Strong ability to troubleshoot and resolve complex SIP-related issues in a carrier-grade network using tools like tcpdump and Wireshark;
  • Experience with highly scalable SIP proxies (Kamailio, OpenSIPS) is a plus;
  • Scripting experience with Bash and Python;
  • Embedded Linux programming in C;
  • Hands-on experience with Linux operating systems;
  • Solid understanding of OSI model, firewalls, IP routing, IP switching, VLANS, and QOS/COS;
  • Hands-on experience with dial plans, IVRs, SIP, IAX, RTP, DIDs, codecs and other protocols;
  • Solid understanding of traditional telephony, PRIs, BRIs, FXO/FXS, circuit-switching, POTS, PSTN, MTSO.

By joining us, you gain the following:

  • Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT;
  • Possibility to develop in cloud technologies. We are a certified AWS partner;
  • Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen;
  • Respect for your private life so you don't have to work overtime or on weekends;
  • Team Events budget to socialize outside of work;
  • Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in Cape Town, Are, and Barcelona).

Perks and benefits:

  • Fully remote work or in our office in Wrocław, Warsaw or Cracow;
  • Free benefits such as Luxmed, Multisport, and life insurance in Nationale Nederlanden;
  • Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior);
  • Personal Training Budget with additional paid hours;
  • Passion Day - an extra day off for your hobby to spend as you please;
  • Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you;
  • We provide high-quality work equipment + 2 additional monitors and accessories.

If you apply for this position and match our expectations, then:

1) You will be invited to an HR Screening with our IT Recruiter.

2) You will have a technical interview.

3) You will meet with a client.

Submit your application online in one easy step Apply now

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