Get in Touch
Telecom software development services

Telecom software development services

OSS and BSS work, billing pipelines and subscriber apps, built by senior LATAM engineers who work your hours and understand what a billing run costs when it goes wrong.

Talk to an Expert
Applebees
KPMG
Mastercard
Microsoft
NetJets
Toyota
  • 15+
    years delivering software
  • 100+
    senior engineers across LATAM
  • 6-8h
    daily overlap with US teams
  • 6+
    Fortune 500 & global brands trust us
Who we are

Engineers who have worked on a live carrier stack

Telecom software is judged on two numbers: whether the bill is right and whether the service activated. Everything else is a feature request that can wait until the next release.

FusionHit builds around carrier and MVNO systems with senior engineers across Latin America who have worked with rating and CDR pipelines, provisioning flows and vendor platforms that stopped being configurable years ago. They work US Central and Eastern hours, so a failed billing run or a provisioning backlog gets attention the morning it happens.

FusionHit engineers working on a telecom platform in the development office \
WHAT WE BUILD

Telecom systems we build

The work carriers, MVNOs and telecom software companies bring us most often.

Billing, rating and charging

Rating logic, invoicing, disputes and the reconciliation that decides whether revenue leaks quietly every month.

CDR and mediation pipelines

Collecting, normalizing and reprocessing usage records at the volume you actually run, with a way to replay a bad day.

Order to activate

Order capture, service qualification, provisioning and the fallout queue where the real cost of a broken flow shows up.

Network inventory and assurance

Inventory, fault and performance data turned into something an operations team can work from.

Subscriber apps and self-service

Account, usage, payments and plan changes, so routine work stops arriving at the call center.

MVNO enablement

The systems an MVNO needs around a host network agreement, from onboarding to wholesale reconciliation.

Integration around vendor platforms

Building beside a BSS or OSS platform that has reached its configuration limits, without forking it.

Legacy migration

Moving off a platform or an in-house system while subscribers, balances and history stay intact.

WHO WE BUILD FOR

The operators and vendors we work with

Different scale, different constraints. These are the ones our engineers already know how to work with.

Carriers and CSPs

Work around a vendor BSS or OSS stack, at a volume where a bad release is measured in subscribers.

MVNOs

Everything the host network does not give you, from onboarding to reconciliation against wholesale.

Regional carriers and co-ops

Smaller teams carrying the same regulatory and billing obligations as a national operator.

ISPs, fiber and cable

Provisioning, field operations and the customer experience around a physical network.

Enterprise communications

Voice, messaging and collaboration platforms sold to business customers.

Telecom software vendors

Product companies that need senior engineering capacity on a roadmap their customers depend on.

THE CARRIER STACK

What working on a carrier stack actually involves

Every vendor lists OSS and BSS as two bullet points. This is what the work behind them actually looks like.

What it covers
What it takes
The billing run

Rating, invoicing, adjustments and the cycle that has to close on time every month.

Reprocessing and replay for a bad cycle, a test environment with realistic volume, and a change process that never ships rating logic without a parallel run against real data.

CDR and mediation

Collecting and normalizing usage from network elements and partners before anything gets rated.

Handling late, duplicate and malformed records as normal cases rather than incidents, plus reconciliation that proves nothing was dropped between collection and billing.

Order to activate

Everything between a signed order and a working service.

Service qualification, provisioning across systems that fail differently, and a fallout queue someone can actually work. Most of the cost sits in the exceptions, not the happy path.

TM Forum Open APIs

A common interface shape for product, order, service and billing, so integrations survive the next vendor change.

Adopting the API patterns where they fit rather than as a certification exercise, and mapping your existing model to them once instead of per project.

US regulatory obligations

Number portability, E911 and NG911 records, CPNI handling, STIR/SHAKEN and the reporting your regulator expects.

Treating them as product requirements with tests and evidence, not as a compliance document written after launch.

Migrating off a vendor platform

Moving subscribers, balances and history without a billing surprise.

Running the new system in parallel for full cycles, migrating in waves, and keeping a way back until the numbers match on both sides.

The billing run

What it covers

Rating, invoicing, adjustments and the cycle that has to close on time every month.

What it takes

Reprocessing and replay for a bad cycle, a test environment with realistic volume, and a change process that never ships rating logic without a parallel run against real data.

CDR and mediation

What it covers

Collecting and normalizing usage from network elements and partners before anything gets rated.

What it takes

Handling late, duplicate and malformed records as normal cases rather than incidents, plus reconciliation that proves nothing was dropped between collection and billing.

Order to activate

What it covers

Everything between a signed order and a working service.

What it takes

Service qualification, provisioning across systems that fail differently, and a fallout queue someone can actually work. Most of the cost sits in the exceptions, not the happy path.

TM Forum Open APIs

What it covers

A common interface shape for product, order, service and billing, so integrations survive the next vendor change.

What it takes

Adopting the API patterns where they fit rather than as a certification exercise, and mapping your existing model to them once instead of per project.

US regulatory obligations

What it covers

Number portability, E911 and NG911 records, CPNI handling, STIR/SHAKEN and the reporting your regulator expects.

What it takes

Treating them as product requirements with tests and evidence, not as a compliance document written after launch.

Migrating off a vendor platform

What it covers

Moving subscribers, balances and history without a billing surprise.

What it takes

Running the new system in parallel for full cycles, migrating in waves, and keeping a way back until the numbers match on both sides.

Talk to an Expert
OUR PROCESS

How a telecom build runs

01

Discovery

The systems, the volumes and the exceptions that consume your team, turned into a scope with acceptance criteria.

02

Architecture and integration design

Where the new work sits against your platforms, and how data flows without duplicating the source of truth.

03

Build

Sprints with a demo every week, in repositories under your organization.

04

Testing and acceptance

Automated tests, parallel runs against real volume for anything touching billing, and your own acceptance.

05

Launch and support

Cutover planned around your billing cycle, then a support window written into the agreement.

TIMELINE AND COST

What it takes to build, by system

Vendors answer this with 'it depends'. Here is what it depends on, by the kind of system, so you arrive at the first call knowing what to expect.

Typical timeline to first release
What drives the cost
Subscriber app or self-service portal

3-5 months

Systems it reads from, payments, plan change rules, and how much of the account model is exposed by your platform.

Integration layer around a vendor platform

3-5 months

Number of systems, what the platform exposes, and how much logic has to be rebuilt outside it.

CDR and mediation pipeline

4-7 months

Record volume and formats, number of sources, reprocessing requirements, and reconciliation depth.

Billing or rating work

5-9 months

Product catalogue complexity, promotions and discounts, tax, and how many cycles have to run in parallel before cutover.

Order to activate

5-9 months

Systems in the chain, how each one fails, and how much of the fallout handling exists today.

Platform migration

8-14 months

Subscriber count, history and balances, parallel run length, and how far the current system has drifted from its documentation.

Subscriber app or self-service portal

Typical timeline to first release

3-5 months

What drives the cost

Systems it reads from, payments, plan change rules, and how much of the account model is exposed by your platform.

Integration layer around a vendor platform

Typical timeline to first release

3-5 months

What drives the cost

Number of systems, what the platform exposes, and how much logic has to be rebuilt outside it.

CDR and mediation pipeline

Typical timeline to first release

4-7 months

What drives the cost

Record volume and formats, number of sources, reprocessing requirements, and reconciliation depth.

Billing or rating work

Typical timeline to first release

5-9 months

What drives the cost

Product catalogue complexity, promotions and discounts, tax, and how many cycles have to run in parallel before cutover.

Order to activate

Typical timeline to first release

5-9 months

What drives the cost

Systems in the chain, how each one fails, and how much of the fallout handling exists today.

Platform migration

Typical timeline to first release

8-14 months

What drives the cost

Subscriber count, history and balances, parallel run length, and how far the current system has drifted from its documentation.

Why FusionHit

Why operators build with FusionHit

  • On your cycle, not the next day

    Engineers on US Central and Eastern time, so a failed run, a provisioning backlog or a partner file gets handled the morning it happens.

  • Senior engineering talent

    Vetted nearshore engineers with production experience in billing, mediation and provisioning systems.

  • Careful with anything that touches revenue

    Parallel runs, replay and reconciliation are part of the definition of done for billing work, not a phase that gets cut.

  • Integrated partnership

    One delivery lead accountable to you, working in your tools and reporting in writing every week.

FusionHit senior nearshore engineers working with a US client team
CASE STUDIES

Platforms we have worked on

Explore all

Tell us which system your team keeps working around.

Talk to an expert, 30 minutes, no commitment.

Talk to an Expert
HOW WE ENGAGE

Three ways to work with us

Pick the model that fits how your team runs. Plenty of clients start with one and move to another as the roadmap grows.

Staff augmentation

Senior engineers added to your existing team, under your direction. Best when you have a technical lead and need capacity or a specific skill.

Dedicated development teams

A stable team that works only on your product, with a lead on our side. Best when you want a whole workstream owned without hiring a manager for it.

Software development outsourcing

A defined scope delivered end to end under our management, for a fixed price and date. Best when the scope is clear and you want one number and one date.

TECHNOLOGY EXPERTISE

Stacks our telecom teams work in

The technologies behind the systems we build and maintain around your network.

Backend

Frontend

Mobile

Cloud and DevOps

Data

Integration

  • • TM Forum Open APIs
  • • REST and messaging
  • • Vendor platform APIs
  • • Partner file exchange
MORE INDUSTRIES

Other industries we build for

The same engineering standards, applied to the rules each industry runs under.

Energy

Grid, metering and field systems built with the same care as anything touching operations.

Fintech

Payments, lending, banking and wealth platforms built inside your compliance perimeter.

SaaS

Multi-tenant products, platform rebuilds and the engineering behind a growing subscription business.

Logistics

Systems that run around the clock, from warehouse to last mile.

Retail

Commerce and store platforms sized for a peak season before it arrives.

Insurance

Policy, quoting and claims platforms for carriers, MGAs and brokers.

Explore all industries
FAQ

FAQs about our telecom software development services

01

How much does telecom software development cost?
It depends on the system. A self-service portal is a different project from rating and billing. The table on this page gives the ranges we see by system type, and after discovery you get a written scope with the cost by milestone. Senior LATAM rates typically run 30-50% below equivalent US rates.
02

How long does telecom software development take?
Typically 3-5 months for a subscriber app or an integration layer, 4-7 months for a mediation pipeline, 5-9 months for billing or order to activate work, and 8-14 months for a platform migration.
03

Can you work around our existing BSS or OSS platform?
Yes, and that is most of what we do. When a vendor platform has reached its configuration limits, we build beside it with a boundary agreed in discovery, so their next upgrade does not break what we built.
04

How do you handle work that touches billing?
Nothing that changes rating or invoicing ships without a parallel run against real data for at least one full cycle, plus the ability to reprocess and replay. Reconciliation is part of acceptance rather than something checked after the first bad month.
05

Do you work with TM Forum Open APIs?
Yes, where they fit. We use the API patterns for product, order, service and billing so that integrations survive your next vendor change, rather than treating it as a certification exercise.
06

Can you support number portability, E911 and CPNI requirements?
Yes. We treat them as product requirements with tests and evidence, built into the systems that handle orders, records and customer data, instead of as a document written after launch.
07

Do you work with MVNOs?
Yes. MVNOs usually need everything the host network does not provide: onboarding, plan and balance management, self-service and reconciliation against wholesale. That is a well defined scope and a good fit for a fixed price.
08

How do you migrate subscribers off an old platform?
In waves, with the new system running in parallel for full cycles and a way back until the numbers match on both sides. Balances and history get migrated and verified before anyone switches.
09

Who owns the code and the intellectual property?
You do. The work lives in repositories and cloud accounts under your organization, and the contract assigns all intellectual property to you from the first commit.
10

Do we hire your engineers or do you deliver the project?
Either. You can add senior engineers to your own team, have a dedicated team own the workstream with a lead on our side, or hand us a defined scope for a fixed price and date. The three models are linked above.

Ready to fix the system your team keeps working around?

Tell us which part of the stack is causing the most work, and we will come back with a scope and a plan.

Trusted by leading teams

  • Mastercard
  • NetJets
  • KPMG
  • Applebees

Rated by our clients

    Required fields

    We reply within one business day.