Payment aggregator software that routes, reconciles, and clears at scale. We build payment aggregator software, payment switch software, payment gateway software, and payment processing software for PSPs, banks, and fintechs, the PA PG switch and fintech payment software that keeps money moving and PCI auditors calm.
Book a payments consult
85%
Long-term Partnerships
75%
Mid-to-Senior Engineers
5+
Avg. Years of Engineer Experience
98%
Would Recommend Us
You are probably here because one of these is true.
What we build across the payments stack.
Our payment aggregator software development covers the full PA PG switch stack. Take the payment gateway software, the payment switch software, the payment processing software, or the full aggregator, each one built as fintech payment software with PCI and reconciliation designed in.
Onboard merchants and aggregate their flows.
Merchant onboardingSub-merchant managementSettlement and payoutsRisk and fraud screening
Payment aggregator software with merchant onboarding, sub-merchant management, and settlement, the PA layer that lets a PSP aggregate flows across many merchants under one payment processing software platform.
Accept cards and wallets across channels.
Card and wallet acceptanceTokenisation and 3DSHosted and API checkoutMulti-currency support
Payment gateway software that accepts cards, wallets, and bank transfers across web and mobile, the payment gateway software front door to your payment processing software with tokenisation and 3DS built in.
Route and authorise across every rail.
Multi-rail routingISO 8583 and API protocolsAuthorisation and clearingFailover and retries
Payment switch software that routes and authorises transactions across card networks, banks, and wallets, the PA PG switch core that keeps fintech payment software fast and resilient under load.
Reconcile, settle, and report at scale.
Reconciliation engineSettlement and clearingChargeback and dispute flowReporting and audit
Payment processing software that reconciles, settles, and reports every transaction, the back office of your payment aggregator software development that keeps the books accurate and the regulators satisfied.
FinTech & Banking, our team for core banking software, payments, lending, insurance, and forex.
Built for every vertical.
Why PSPs pick us for this.
Our payment aggregator software development comes from engineers who have launched payment switch software and payment gateway software, so the build is resilient, not just tidy on a slide.
Tokenisation, encryption, and PCI DSS scope are designed into your payment processing software from the first sprint, not patched in before launch.
You work with senior payments engineers, not a junior team learning fintech payment software on your budget.
Our payment processing software settles and reconciles to the cent, so your PA PG switch keeps the books and the auditors clean.
Our achievements display our capabilities
Selected work real outcomes.
A few of the products and platforms we have shipped across fintech, healthcare, logistics, hospitality, and SaaS.
View All Case StudiesSenior payments engineers from day one. Our payment aggregator software development pairs you with people who have shipped payment switch software and payment gateway software before, not an account manager relaying notes.
Start a payments build{ 01 }· Week 1
We learn your flows, the rails you touch, and the PCI scope that binds them, so the payment switch software architecture and compliance boundary are written down before any build.
{ 02 }· Week 2 to 3
We design routing, tokenisation, and reconciliation for your payment gateway software and payment processing software, with PCI controls and audit trails built into the fintech payment software.
{ 03 }· Build
We build payment gateway software, payment switch software, and payment processing software in tested increments, load-tested and hardened for the throughput a PA PG switch demands.
{ 04 }· Launch and run
We ship your payment aggregator software to production and stay on for monitoring, settlement accuracy, and the next release of your fintech payment software roadmap.
Trusted voices. Real outcomes.
“We truly appreciated their dedication, technical expertise, and problem-solving approach.”
Young Onion
Department Head
“I was blown away by the knowledge the team had about creatives, e-commerce, website design, and optimization.”
Decathlon Sports India
Image Leader
“They have a good team of designers and project managers who help us with the designs using HTML, Angular, and React.”
Instarama
COO
“Their creativity stands out. A collaborative team that delivered high-quality solutions working closely with us.”
CodeGama LLP
Business Developer
“The product has become more intuitive and user-friendly. Load times dropped significantly after their work.”
Qoruz
Co-Founder
“Their commitment to timely delivery was impressive.”
CurleyStreet Media
Business Development Rep
“We truly appreciated their dedication, technical expertise, and problem-solving approach.”
Young Onion
Department Head
“I was blown away by the knowledge the team had about creatives, e-commerce, website design, and optimization.”
Decathlon Sports India
Image Leader
“They have a good team of designers and project managers who help us with the designs using HTML, Angular, and React.”
Instarama
COO
“Their creativity stands out. A collaborative team that delivered high-quality solutions working closely with us.”
CodeGama LLP
Business Developer
“The product has become more intuitive and user-friendly. Load times dropped significantly after their work.”
Qoruz
Co-Founder
“Their commitment to timely delivery was impressive.”
CurleyStreet Media
Business Development Rep
“Simply put, the quality of their code is excellent. They integrated third-party software and ensured GDPR compliance.”
VIA IOM
Director
“What impressed us most was how well they understood our brand and translated it into clean, thoughtful designs.”
GD Farm Fresh
Director
“Their team was patient, courteous, responsive, and technically proficient throughout the entire project.”
Studio by Nandita Manwani
Partner
“Zethic Technologies generally delivers on time and in line with our requirements – deployed in 30+ countries.”
SABA Hospitality
Executive Director
“Zethic built the features specifically to match our internal workflow and business needs. Professional and on time.”
Coral Publishers
Executive
“Zethic Technologies is a true partner.”
Geordana
CEO
“Simply put, the quality of their code is excellent. They integrated third-party software and ensured GDPR compliance.”
VIA IOM
Director
“What impressed us most was how well they understood our brand and translated it into clean, thoughtful designs.”
GD Farm Fresh
Director
“Their team was patient, courteous, responsive, and technically proficient throughout the entire project.”
Studio by Nandita Manwani
Partner
“Zethic Technologies generally delivers on time and in line with our requirements – deployed in 30+ countries.”
SABA Hospitality
Executive Director
“Zethic built the features specifically to match our internal workflow and business needs. Professional and on time.”
Coral Publishers
Executive
“Zethic Technologies is a true partner.”
Geordana
CEO
Ways to work with us.
The same senior team and the same way of working, shaped to how much you already have in-house. Most clients start with one and move between them as they grow.
A scoped piece of work with a clear deliverable, timeline, and price. Best when the definition of done is clear.
A senior pod embedded in your tools and rituals, shipping every sprint. Best when you want capacity without a long hiring cycle.
Questions, answered.
Payment aggregator software lets a PSP onboard merchants and aggregate their transaction flows under one platform. In a PA PG switch stack the payment gateway software accepts payments, the payment switch software routes and authorises them across rails, and the payment processing software reconciles and settles. Our payment aggregator software development builds all three as one fintech payment software platform.
Payment switch software routes and authorises transactions across card networks, banks, and wallets, handling protocols like ISO 8583 and modern APIs with failover and retries. Our payment switch software is the core of a PA PG switch, keeping fintech payment software fast and resilient even under heavy load.
Yes. PCI compliance is the spine of our payment aggregator software development. We design tokenisation, encryption, 3DS, and PCI DSS scope into your payment gateway software and payment processing software from the first sprint, and we run security testing before any fintech payment software ships.
Payment aggregator software development is scoped after a short discovery that maps your rails and PCI boundary. A focused payment gateway software build costs less than a full PA PG switch with payment processing software. We agree the cost and timeline before any code is written.
Yes. Our payment processing software and payment switch software are built to integrate with card networks, acquiring banks, wallets, and local rails. We map every integration during discovery so your fintech payment software talks to the rails you need from day one.
Tell us what you are building and where you are stuck. A senior payments engineer replies within one working day, no sales script.
Tell us the build
Share your payment flows, rails, and PCI scope. We sign an NDA so it stays between us.
Talk it through
A senior engineer digs into the payment switch software, the rails, and what success looks like for you.
Get a clear plan
A scoped payment aggregator software development roadmap, an honest cost band, and a PCI-aware delivery plan.
Tell us what you are building and where you are stuck. A senior payments engineer replies within one working day, no sales script.
