Hire Telecom Billing Devs

Telecom Billing System Development Experts On-Demand Deploy pre-vetted C# telecom billing engineers in 48 hours. Leverage our unique talent cloud to cut recruitment overhead by 70%. • Hire in under 48 h • Top 2 % C# specialists • Scale month-to-month
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Why outstaff C# talent for Telecom Billing System Development?

In fast-moving telecom markets you cannot afford six-month recruitment cycles or skill mismatches. Outstaffing gives you an instantly expandable bench of C# experts who have already built mediation layers, rating engines and OSS/BSS integrations. You keep full managerial control while we handle payroll, HR and local compliance.

Business impact: cut hiring time to days, lower total cost of ownership by up to 40 %, and prevent knowledge gaps that delay revenue recognition.

With Smartbrain.io you pay only for productive hours, scale teams up or down each sprint, and gain immediate IP protection through ironclad NDAs—so you can focus on rolling out new tariff plans, 5G services and IoT billing without the overhead of permanent hires.
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What CTOs Say About Telecom Billing System Development

"Smartbrain.io delivered two C# gurus in 36 hours who plugged straight into our usage-based rating engine makeover. Their grasp of LINQ, microservices and CDR parsing let us clear a three-month backlog in one sprint, boosting release cadence and QA coverage."

Evelyn Parker

VP Engineering

ClearWave Mobile

Our MVNO was drowning in duplicate invoice defects. Smartbrain's C# specialists rewrote the validation layer with performant async / await patterns, cutting error rate by 87 %. Onboarding finished in a single day thanks to their telecom domain fluency.

Michael Anderson

CTO

ZenCall Wireless

When 5G trials exploded traffic volume, we outstaffed three senior C# devs through Smartbrain.io. They tuned our .NET Core mediation service to process 4× more CDRs without new hardware. The flexible monthly contract kept finance happy.

Rosa Martinez

Billing Platform Manager

OrbitNet Communications

Migrating from legacy COBOL to C# microservices seemed endless until Smartbrain.io inserted seasoned developers who had ported similar OSS stacks. Their code reviews and automated tests shaved two sprints off our timeline and kept uptime at 99.99 %.

James Bennett

Director of Software

FrontLine Telco

Smartbrain's vetting meant every augmentation hire arrived GIT-ready, with telecom BSS know-how. Pair-programming with our in-house team, they raised feature throughput by 32 % while my managers stayed focused on roadmap, not recruitment.

Linda Cooper

Software Delivery Lead

SignalEdge Solutions

As a solo DevOps lead, I needed C# firepower fast. Smartbrain.io supplied a senior developer who automated our invoice reconciliation in Azure Functions, freeing 15 hours of my week and halving billing latency.

Robert Hughes

DevOps Lead

BluePeak IoT

Where C# Billing Specialists Excel

Mobile Operators

Telecom Billing System Development experts build and optimize C# mediation, charging and rating services that handle millions of CDRs for GSM, 4G and 5G networks, integrating seamlessly with OSS/BSS stacks and real-time charging gateways to keep revenue assurance airtight.

MVNO & MVNE

Augmented C# developers craft lightweight billing engines, reseller portals and wholesale settlement modules, allowing virtual operators to launch new tariff bundles rapidly while maintaining compliance with Japanese carrier-grade SLAs.

Cable & IPTV

Specialists create convergent C# billing platforms that unify voice, video and data subscriptions, automate prorated charges and integrate with CRM for upsell campaigns across Japan’s competitive media landscape.

IoT Connectivity

Developers implement scalable device-centric rating in C#, enabling per-byte, per-message or event-based charging for smart meters, logistics trackers and industrial sensors, accelerating monetization of IoT ecosystems.

Cloud Communications

For CPaaS providers, augmented C# talent designs micro-billing services that meter API calls, SMS, voice minutes and WebRTC sessions in real time, feeding analytics dashboards for usage insights.

Enterprise VoIP

C# engineers tailor on-premise or hosted VoIP billing modules with advanced least-cost routing, taxation tables and automated invoicing, ensuring regulatory alignment and financial transparency.

Satellite Services

Specialists develop resilient usage billing systems accommodating intermittent connectivity and high-latency links, optimizing data bundles and airtime billing for maritime and aero markets.

FinTech Payments

C# teams integrate telecom billing feeds with payment gateways, enabling prepaid top-ups, mobile wallets and carrier billing while ensuring PCI-DSS compliance and real-time fraud checks.

Smart City Utilities

Developers merge telecom datasets with utility usage to deliver unified invoices for electricity, water and broadband, powered by C# microservices and big-data pipelines.

Telecom Billing System Development Success Stories

5G Launch Readiness for Sunrise Mobile

Client: Tier-2 Japanese mobile operator preparing nationwide 5G rollout.

Challenge: Legacy Telecom Billing System Development could not calculate 5G slice pricing in real time.

Solution: Smartbrain.io augmented the client’s team with four senior C# developers. Working alongside product owners, they refactored the rating engine to microservices, introduced gRPC interfaces, and implemented dynamic tariff logic within eight sprints.

Result: 42 % latency reduction on charge calculation, 99.997 % uptime during launch week, and new 5G plans activated two months ahead of schedule.

MVNO Revenue Leak Plugged for NipponConnect

Client: Fast-growing MVNO serving 1 M subscribers.

Challenge: Disparate provisioning feeds caused frequent billing gaps in their Telecom Billing System Development stack.

Solution: Two outstaffed C# architects designed a unified mediation layer with Azure Event Hubs, built automated reconciliation scripts and deployed CI/CD pipelines for zero-downtime releases.

Result: €3.6 M annual revenue leakage stopped, billing accuracy climbed to 99.9 %, and support tickets related to invoicing dropped by 68 %.

IoT Billing Acceleration for KyotoSmartGrid

Client: Smart-city utility managing 2 M connected meters.

Challenge: Existing Telecom Billing System Development processed only hourly batches, delaying consumption insights for citizens.

Solution: Three C# specialists from Smartbrain.io implemented a real-time streaming calculator using .NET 6 and Apache Kafka, plus an HTML5 self-care portal.

Result: Data-to-invoice time shrank from 24 h to 3 min, customer satisfaction score rose by 21 pts, and the city unlocked dynamic pricing capabilities.

Book a 15-Minute Call

120+ C# engineers placed, 4.9/5 avg rating. Schedule a quick discovery call to see matching telecom billing experts and get a curated shortlist within 24 hours.
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Key Outstaffed Services

Rating Engine Revamp

Senior C# developers re-architect monolithic rating engines into cloud-native microservices, yielding faster tariff changes and effortless scalability while maintaining strict telecom billing compliance.

Mediation & CDR Parsing

Augmented teams build high-throughput mediation layers in .NET Core that normalize multi-vendor CDRs, enriching data quality and eliminating revenue leakage.

Invoice Automation

Experts craft automated invoice generation and taxation modules, integrating with ERP and payment gateways to shorten DSO and improve cash-flow predictability.

Real-Time Charging

Developers implement low-latency OCS components leveraging Redis and SignalR, enabling prepaid balance checks and 5G slice billing in milliseconds.

Migration & Refactoring

Teams port legacy C/C++ or Java billing stacks to modern C#, reducing maintenance costs, boosting performance and unlocking CI/CD delivery pipelines.

Self-Care Portals

Front-end-savvy C# devs deliver responsive subscriber portals that expose usage, invoices and top-ups, enhancing customer experience and reducing call-center load.

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FAQ – Telecom Billing System Development & C# Augmentation