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Erlang as a programming language is one of the most important languages when it comes to messaging, and has been used to revolutionize the telecommunications industry.

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Live Experts ®

4.9

353

9.2

99%

Daska, Pakistan

$50 USD per hour

Live Experts LLC is a multidisciplinary technology company specializing in Engineering, AI/ML, Embedded Systems, IoT, and Automation Solutions for startups, businesses, and enterprises worldwide. With over a decade of technical delivery experience and hundreds of successfully completed projects, we help clients transform complex ideas into scalable, production-ready solutions that solve real business and operational problems. Our strength comes from combining software, AI, automation, electronics, and engineering expertise under one team. This allows us to handle both digital systems and real-world hardware projects with practical implementation experience. Our expertise includes: • Artificial Intelligence (AI) & Machine Learning (ML) • Generative AI & Conversational AI • AI Chatbots & AI Agents • Computer Vision & OCR Systems • Predictive Analytics & Data Intelligence • Workflow Automation & AI Integration • Embedded Systems & IoT Solutions • Arduino, ESP32 & Raspberry Pi Development • PLC, SCADA & Industrial Automation • Electrical & Mechanical Engineering Support • Sensor Integration & Smart Monitoring Systems • AI-Powered Dashboards & Business Platforms • Cloud APIs & System Integrations • Automation & Control Systems We work with modern technologies including: Python, OpenAI, ChatGPT, TensorFlow, OpenCV, Node.js, React, FastAPI, PostgreSQL, AWS, Docker, MATLAB, Arduino, ESP32, Raspberry Pi, PLC systems, and industrial automation platforms. What makes us different is our ability to bridge the gap between: AI + Automation + Embedded Systems + Engineering Many companies can build software. Others can build electronics. Very few can combine AI, automation, hardware, and engineering into complete intelligent systems that work in real business environments. We have experience working across: • Industrial Automation • Healthcare • Logistics & Fleet Systems • Manufacturing • Finance & Trading Systems • Smart Monitoring Systems • Operational Dashboards • IoT & Connected Devices • AI Business Solutions • Intelligent Automation Platforms Our development approach focuses on: • practical implementation • scalable architecture • clean UI/UX • reliable integrations • business-focused solutions • long-term maintainability • clear communication • premium execution quality Whether you need: • an AI-powered platform • an embedded IoT device • industrial automation • computer vision systems • AI automation workflows • predictive analytics dashboards • AI chatbots • sensor-based monitoring systems • electrical/mechanical engineering support • or a complete intelligent system Live Experts can help design, develop, and deploy reliable solutions tailored to your business goals. We believe in building long-term partnerships and delivering systems that create measurable operational and business value.

Erlang PHP Perl C Programming Java

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Kanwal R.

5.0

101

6.9

98%

Karachi, Pakistan

$25 USD per hour

I'm an experienced software developer with experience in building web scrapers, crawlers, and webbots of varying complexity in PHP and Python. I also have experience in modern web technologies, including HTML5, CSS3, and JavaScript on the Front-End as well as PHP and Node.js on the Back-End. I also do the following: - Develop command-line tools and utilities in PHP, Python, Go, and JavaScript - Develop Greasemonkey and Tampermonkey scripts - Develop websites in core PHP, CodeIgniter framework, and Drupal - Develop and integrate SOAP and RESTful APIs in PHP and Node.js - Convert regular HTML pages to AMP (Accelerated Mobile Pages) - Write Google Apps Scripts for Google Workspace apps, including Google Sheets - Build add-ons for Google Workspace apps - Develop webbots to automate repetitive website operations I am a hard-working, reliable person. You can depend on me for your project needs.

Erlang PHP Perl C Programming JavaScript

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ASRADesigning

5.0

7.4

95%

Karachi, Pakistan

$40 USD per hour

I'm Muhammad Ashar, a passionate digital creator specializing in immersive experiences across game development, website design, and both 2D and 3D art and animation. With years of hands-on experience, I take pride in delivering high-quality, creative solutions that bring ideas to life. Whether you're looking to build a captivating game, design a modern and responsive website, or create eye-catching visuals and animations, I offer end-to-end services tailored to your specific needs. My Services: Game Development: Designing and developing engaging games for various platforms. Website Development: Creating clean, responsive, and user-friendly websites. 2D & 3D Art: Crafting visually stunning artwork and models for games, media, and more. Animation: Producing dynamic animations that enhance storytelling and audience engagement. Graphic Design: Delivering impactful designs for branding, marketing, and digital media. I'm committed to blending creativity with technology to help bring your vision to life. Let’s work together to turn your ideas into reality.

Erlang PHP Perl ASP C Programming

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Bilal A.

5.0

5.6

100%

Islamabad, Pakistan

$25 USD per hour

I am having more than 5 Years of experience in VoIP domain. Worked in many fortune 500 companies. VoIP: Asterisk,FreeSwitch,Kazoo VoIP Cluster,Kamailio,A2Billing, ASTPP, Auto Dialer. Ringless VoiceMail Expert, Custom Phone Dialers, Custom Auto Dialer. System Admin: Proxmox,VMWare,KVM,XenServer,Apache,Mysql,NginX,HAProxy. Databases: MySQL, Oracle, MongoDB, Redis. Monitoring: Nagios, Zabbix, Homer. Automation: Ansible. XMPP: Ejabberd. Languages: Golang, Python, Lua, Bash. Upwork Profile: https://www.upwork.com/freelancers/~01f022241aba307bff

Erlang PHP C Programming Python Linux

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Zeeshan J.

5.0

3.7

100%

Rawalpindi, Pakistan

$20 USD per hour

We provide cost effective web services which includes web hosting, domain registration,email setup @ yourdomain.com , website development , e-commerce, shopping cart, wordpress, cloud based accounting software, warehouse and inventory management system, building management system with rental and utility billing management, HRM System, CRM and Ticketing system, Contactless QuickQR Online Menu and restaurant ordering system, LMS e-learning system, Online Hospital Management System, self hosted file sharing with desktop & mobile sync software (nextcloud or owncloud), social media marketing and branding etc. webhosting server management, setup and manage spam and virus free email services for your company , Can install and configure Linux on VPS or dedicated server and any webhosting control panel paid like cpanel, plesk etc or free like centos web panel, aapanel, vestacp etc and can manage your server security by installing and configuring (ConfigServer Security & Firewall (CSF) + Login Failure Daemon (LFD) , ModSecurity with OWASP or Comodo WAF rules. Installing and configuring node.js & npm or apache tomcat server to host any java app online, nginx-varnish-apache, php-fpm , mysql, phpmyadmin, Postfix Mail Server with Dovecot IMAP/POP3 Server, roundcube for webmail, ClamAV, AMaViS (A Mail Virus Scanner), OpenDKIM, and SpamAssassin, etc on a private cloud vps or dedicated server.

Erlang PHP Script Install System Admin Shopping Cart Integration

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Wasi U.

5.0

6.9

100%

Bahawalpur, Pakistan

$25 USD per hour

Highly skilled in Elixir and JavaScript, I bring extensive experience with modern frameworks and libraries such as Elixir/Phoenix, React.js/Redux, Angular/ngrx, Vue.js, TypeScript, Node.js/Express.js, Nest.js and more. A key strength of mine is developing serverless web applications using AWS and integrating various third-party APIs, including Facebook, Twitter, Google, Firebase, Twilio, Payment Gateway, Hubspot, Quickbooks, OAuth, Auth0, and WebRTC. While I enjoy making money, I prioritize doing so ethically. I believe that your success is my success, and I'm committed to giving my best to ensure the success of your business. Languages: - Elixir, JavaScript, TypeScript, PHP, Python Frameworks and Libraries - jQuery - React.js, Redux, Redux-Saga, React Hooks, React Material - Vue.js, Vuetify, Quasar - Node.js, Nest.js, Next.js, Express.js, Socket.io - Phoenix, LiveViews - Angular 4, 6-9, Angular Material - GraphQL - Serverless Databases - MySQL, PostgreSql, MongoDB, Firebase, Elastic Search - Redis Cloud Computing - AWS IAM, Cognito, API Gateway, Lambda, S3, EC2, RDS, DynamoDB, AppSync, Amplify, etc - Google Cloud Platforms Payment Gateways - Stripe, PayPal, Braintree, Authorize.net CI/CD - Circle CI, Travis CI, Bitrise I love learning new technology skills and best practices.

Erlang PHP C Programming Java JavaScript

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Clients rate our Erlang Developers

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How to hire a great freelance Erlang Developer

An Erlang developer is a software engineer who builds highly concurrent, fault-tolerant, and distributed systems using the Erlang programming language and the OTP (Open Telecom Platform) framework. Hiring an Erlang programmer gives your business access to a specialist trained in soft real-time systems, message-passing concurrency, and the BEAM virtual machine that powers some of the most reliable backends in production today.

Erlang was built at Ericsson for telecom switches that demand near-zero downtime, and it has since become the language of choice for messaging platforms, payment processors, multiplayer game servers, IoT backends, and any system where uptime, scale, and concurrency are non-negotiable. A skilled Erlang engineer brings not just language fluency, but the architectural mindset needed to design supervision trees, hot-swap code in running systems, and scale across distributed nodes without sacrificing reliability.

What an Erlang developer delivers

An Erlang software engineer designs, builds, tests, and maintains backend systems where concurrency and uptime are critical. The deliverables go far beyond writing modules — they include architectural decisions that determine how your system behaves under load, partial failure, and continuous deployment.

Concurrent backend services built on OTP behaviours such as gen_server, gen_statem, and supervisor

Distributed clusters using Erlang distribution protocol, Mnesia, or external stores like Riak and PostgreSQL

Real-time messaging systems, chat servers, and pub/sub infrastructure

Telecom and VoIP applications including SIP signaling and SMPP gateways

Message brokers and integrations with RabbitMQ, which itself is written in Erlang

REST and WebSocket APIs using Cowboy, Yaws, or the Phoenix framework when paired with Elixir

Hot code reloading workflows and zero-downtime release pipelines using rebar3 and relx

Property-based testing suites with PropEr or QuickCheck, plus Common Test and EUnit coverage

Performance profiling, observer-based diagnostics, and tuning of the BEAM scheduler

Tools, libraries, and frameworks Erlang specialists use

A capable Erlang consultant should be fluent across the standard tooling and ecosystem libraries that production teams rely on. Look for hands-on experience with the following:

OTP — the standard library of behaviours, applications, and supervisors that defines idiomatic Erlang

rebar3 and erlang.mk for build, dependency management, and releases

Cowboy for HTTP and WebSocket servers

Mnesia , ETS , and DETS for in-memory and disk-based storage

RabbitMQ , EMQX , and VerneMQ for messaging and MQTT brokers

ejabberd and MongooseIM for XMPP and chat platforms

Riak for distributed key-value storage

Elixir and the Phoenix framework, which run on the BEAM and often appear alongside Erlang

observer , recon , and fprof for live system inspection and profiling

Industries that hire Erlang programmers

Erlang is a specialist language chosen for specific problem shapes. Companies and projects most likely to need an Erlang freelancer include:

Telecommunications, VoIP providers, and SMS gateway operators

Fintech and payment processors that need predictable latency and high availability

Messaging, chat, and presence platforms

Multiplayer gaming backends and real-time matchmaking services

IoT platforms handling millions of persistent connections

Adtech bidders and exchanges with strict latency budgets

Blockchain and distributed ledger projects, several of which are written in Erlang or Elixir

Teams maintaining or migrating legacy Erlang codebases originally built for telecom or financial systems

How to evaluate Erlang developer candidates

Erlang is a niche skill, so the talent pool is smaller than for mainstream languages — but the signals of quality are clear. Look for engineers who have shipped production OTP applications, can speak fluently about supervision strategies, and understand the trade-offs between processes, NIFs, and ports. Strong candidates often have backgrounds in systems programming, telecom, or distributed databases, and frequently overlap with Elixir, Go, or Rust experience.

Portfolio markers worth weighting heavily include open-source contributions to OTP libraries, write-ups of production incidents and their resolutions, and demonstrable experience with hot upgrades or large-scale clustering. Sample interview questions you can use directly:

Walk me through how you would design a supervision tree for a service that ingests millions of MQTT messages per minute.

When would you choose gen_statem over gen_server, and what problem does it solve better?

How do you debug a production BEAM node that is showing high reduction counts and growing message queues?

Describe a time you used hot code loading in production. What were the risks and how did you mitigate them?

What is the difference between a link and a monitor, and when would you reach for each?

Why hire Erlang developers on Freelancer.com

Freelancer.com gives you direct access to a global network of Erlang engineers, OTP specialists, and BEAM systems consultants who have shipped concurrent and distributed systems across telecom, fintech, and IoT. Because Erlang is a specialist language, sourcing locally is often slow and expensive — posting a project on Freelancer.com puts your brief in front of qualified developers across multiple time zones within hours.

You set your own budget, receive competitive bids, and review verified profiles, ratings, portfolios, and past client reviews before awarding the project. Milestone Payments hold funds in escrow and release them only when work meets your expectations, giving you protection on engagements ranging from a single bug fix to a full distributed backend build.

Post a project on Freelancer.com today and connect with skilled Erlang developers ready to build, scale, and maintain the concurrent systems your business depends on.

What are the steps to hiring a freelance Erlang developer?

Hiring an Erlang engineer works best when you treat the brief as a technical specification rather than a job ad. Because Erlang is chosen for specific architectural reasons — concurrency, fault tolerance, distribution — the more precisely you describe the problem, the better the bids you will receive. The process below walks through posting, reviewing, and awarding your project.

Step 1: Post your project on Freelancer.com

Your project post is the single biggest determinant of bid quality. A clear, technical brief filters out generalists and attracts engineers whose OTP and BEAM experience genuinely matches your problem. Head to the post project page , where you fill in the brief, scope, timeline, and budget before publishing the project for freelancers to bid on.

State whether the work is greenfield, a feature on an existing codebase, a migration, or a code review

List the Erlang and OTP versions in use, plus key libraries such as Cowboy, Mnesia, ejabberd, or RabbitMQ

Describe the concurrency and reliability requirements — connection counts, latency targets, expected throughput, uptime expectations

Specify deployment context: bare metal, Kubernetes, release packaging, hot upgrade requirements

Note adjacent skills needed such as Elixir, PostgreSQL, Redis, or specific protocols like MQTT, SIP, or XMPP

Include your timeline, milestone expectations, and whether NDA or IP assignment is required

Step 2: Review bids from freelancers

Bids on an Erlang project are short technical proposals, not just price quotes. A strong bid shows the freelancer has read your brief, understood the concurrency model you need, and has an opinion about the right approach. Use Freelancer.com's chat to ask clarifying questions before shortlisting.

Look for bids that reference specific OTP behaviours or libraries appropriate to your problem

Watch for proposals that raise sensible questions — about supervision strategy, persistence, or clustering

Check that the proposed timeline and milestones reflect realistic effort, not just the lowest possible quote

Prefer freelancers who attach links to relevant Erlang or Elixir work, GitHub repositories, or technical write-ups

Ask shortlisted candidates to describe how they would structure the supervision tree or release process

Use chat to test communication clarity — you will be working closely with this engineer

Step 3: Evaluate freelancers and award the project

Final selection combines proposal quality with profile evidence. For Erlang work specifically, consistency matters more than a single impressive sample — you want an engineer who has shipped reliable systems repeatedly, not one who has experimented with the language once. Weigh portfolio depth, ratings, and review content together.

Review portfolio depth for production OTP applications, distributed systems, or messaging platforms

Check star ratings alongside the volume of completed projects to confirm consistency

Read written client reviews for signals about code quality, communication, and on-time delivery

Confirm verified payment method, completion rate, and response time on the freelancer's profile

Look for adjacent skill confirmation — Elixir, Linux systems, PostgreSQL, observability tooling

Award the project and structure the engagement using Freelancer.com's Milestone Payments, which hold funds in escrow and release them as each defined deliverable is approved

What is the difference between an Erlang developer and an Elixir developer?

Both languages run on the BEAM virtual machine and share the same OTP framework, so most senior Erlang engineers can work in Elixir and vice versa. The choice usually comes down to the existing codebase: hire an Erlang specialist for legacy telecom systems, RabbitMQ extensions, or ejabberd work, and an Elixir specialist for newer Phoenix-based web applications.

Can I hire an Erlang freelancer for a short-term or one-off project?

Yes. Many Erlang consultants on Freelancer.com take on short engagements such as performance audits, OTP refactors, code reviews, hot upgrade planning, or migrating legacy modules. You can scope a fixed-price project for a defined deliverable or hire hourly for ongoing maintenance.

How long does an Erlang development project typically take?

Timelines depend entirely on scope. A targeted bug fix or profiling engagement can take a few days, a new OTP service or API typically runs several weeks, and a full distributed system build with clustering, persistence, and observability tooling can run several months. Asking shortlisted bidders for milestone breakdowns is the fastest way to get realistic estimates.

Do I need an Erlang freelancer or a development agency?

For most Erlang projects, a freelance specialist or a small team of independent engineers is the most efficient route, since the work is highly technical and benefits from direct communication with the engineer writing the code. Agencies make sense only when you need parallel staffing across multiple disciplines such as DevOps, frontend, and Erlang backend simultaneously.

Should my Erlang developer also know DevOps and deployment tooling?

Ideally yes. Production Erlang systems involve releases built with rebar3 or relx, container orchestration, monitoring with Prometheus or observer, and clustering across nodes. A developer who is comfortable with the operational side will deliver a system that is easier to run, not just easier to read.