UAM

We are looking for a Senior VoIP / Unified Communications Engineer to design, deploy, and support a centralized VoIP phone system for six retail locations in the United States.

The role is highly hands-on and requires strong production experience with Asterisk or FreeSWITCH, US telephony, SIP infrastructure, networking, and multi-location environments.

The initial stage will focus on architecture and deployment, with an opportunity for ongoing maintenance and further development.

About the project

Each location will have its own:

• US phone numbers / DIDs
• Extension range
• Outbound Caller ID
• Business hours and holiday schedules
• IVR
• E911 emergency address

Employees must also be able to call extensions across locations.

The VoIP platform will be centrally managed and integrated with CRM systems.

Responsibilities

• Design and document the VoIP architecture
• Recommend and deploy Asterisk / FreePBX or FreeSWITCH / FusionPBX
• Configure 6 locations as separate sites or tenants
• Configure local and cross-location extension dialing
• Configure US DIDs, SIP trunks, inbound/outbound routing and Caller ID
• Implement E911 and per-location emergency addressing
• Configure IVRs, ring groups, queues, voicemail, call recording, business hours and holidays
• Provision IP phones and softphones
• Troubleshoot SIP, RTP, NAT, codecs and one-way audio
• Review network requirements: VLAN, QoS, PoE, firewalls and Internet failover
• Implement security against toll fraud, brute-force attacks and unauthorized registrations
• Set up monitoring, alerting, backups and disaster recovery
• Maintain technical documentation and train internal administrators
• Provide post-launch support

Requirements

• 4+ years of hands-on production VoIP experience
• Strong production experience with Asterisk or FreeSWITCH
• Strong knowledge of SIP, SDP, RTP, NAT and codec negotiation
• Experience with sngrep, Wireshark and packet captures
• Strong Linux and networking skills
• Experience with US SIP trunk providers and DID routing
• Experience with multi-site or multi-tenant VoIP environments
• Experience with monitoring, backups, PBX security and disaster recovery
• Strong written technical documentation skills
• Ability to communicate technical decisions clearly in English

• Availability to overlap with US business hours

   

Nice to have

• Experience with UCaaS / CCaaS, hosted PBX, CPaaS or telecom SaaS
• Experience with call-center or automotive/dealership products
• Telephony integration with CRM, APIs and webhooks
• Experience with FusionPBX, Kamailio, OpenSIPS, SBCs or RTPengine
• Experience with Telnyx, Bandwidth, Twilio, Flowroute or similar US carriers
• Knowledge of E911, STIR/SHAKEN, CNAM and caller reputation
• Experience with Yealink, Poly or Grandstream provisioning
• Experience with SMS/MMS and A2P 10DLC
• CDR, call events and call-recording storage
• Bash, Python or Node.js
• High Availability / Disaster Recovery experience

• Previous experience working for a VoIP, UCaaS, contact-center or telecom company serving the US market

   

Work format

Remote

The project is focused on the US market, so partial overlap with US business hours is required.

We are looking for a specialist who can take ownership of the technical solution from architecture and deployment through launch and ongoing support.

Шукаємо дизайнера для роботи над проєктом на part-time основі або по окремих задачах.

Задача:

Потрібно відмальовувати екрани на основі вже готових прототипів, використовуючи існуючу дизайн-систему. 

Дизайн з нуля створювати не потрібно, важливо акуратно та якісно допрацьовувати екрани в межах уже заданого стилю.

Важливо:

Нам потрібен спеціаліст, який розуміє, як працювати з дизайн-системою та дизайн-токенами.

Обов’язкові вимоги:

- Досвід роботи з дизайн-системами;

- Розуміння, що таке дизайн-токени та як їх застосовувати;

- Досвід роботи у Figma;

- Вміння працювати з готовими прототипами;

- Уважність до деталей;

- Вміння дотримуватися існуючого UI style guide;

Формат роботи:

Remote

Part-time або проєктна співпраця

У відгуку, будь ласка, вкажіть:

1) Посилання на портфоліо;

2) Ваш досвід роботи з дизайн-системами;

3) Чи працювали ви з дизайн-токенами;

4) Вашу вартість за годину роботи;

5) Скільки годин на тиждень ви можете виділяти на проєкт.

Розглядаємо кандидатів, які можуть акуратно працювати по готовій дизайн-системі, розуміють роботу з токенами та готові швидко включитися в задачі.

We are looking for a Mid-level Full-Stack Developer (3+ years of experience) to work on a modern web project using an up-to-date technology stack.

🧩 Responsibilities:

• Develop and maintain the backend using NestJS (Node.js)
• Work with MySQL databases via TypeORM
• Develop the frontend using Angular 21
• Integrate third-party services and APIs
• Write clean, maintainable, and scalable code
• Participate in code reviews and team-based development

• Work with Git (version control)

  
  🛠 Requirements:

• 3+ years of commercial experience in Full-Stack development
• Strong knowledge of TypeScript
• Experience with NestJS / Node.js
• Experience with TypeORM
• Hands-on experience with MySQL
• Experience developing with Angular (version 21 or a close equivalent)

• Confident use of Git

   

  ⭐ Nice to have:

• Experience working with the OpenAI API
• Experience using Docker
• Writing and maintaining automated tests with Playwright

🎯 We offer:

• Work on an interesting and technology-driven project
• A friendly team and comfortable communication
• Fully remote work format
• Competitive salary (depending on experience)