Java is what runs when the transaction has to be right: core banking journeys, lending engines, service platforms with years of life ahead of them. We build on the current Java and Spring Boot — records, virtual threads, native images where they pay — with the testing, observability and security posture regulated products need.
Our Java development services cover new services, the modernisation of the monolith nobody wants to touch, and the long-run support that keeps a JVM estate patched and boring.
Let’s talk JavaDevelopment services
From a greenfield Spring Boot service to a decade-old estate brought back under test, our Java development services cover the backend where the money moves.
01
Production-grade services on the current Spring Boot: layered or hexagonal architecture, validated configuration, OpenAPI contracts, resilience patterns and observability wired in from the first commit — the backend for onboarding, lending and transaction journeys where correctness is the feature.
02
Onboarding, KYC, deposits, loan origination and servicing built on Java for small finance banks and lenders — the domain logic where the rules change every quarter, designed so a policy change is configuration rather than a release.
03
The Java 8 estate on an application server nobody upgrades, brought forward in stages: tests around the seams, a current JDK and framework, containers, then the extraction of the services that need to scale — while the product keeps running.
04
Kafka, JMS and REST integration layers between core systems, partners and channels — idempotent consumers, schema governance, dead-letter handling and the reconciliation that regulated integrations need to prove nothing was lost.
05
Throughput and latency work on real traffic: profiling, garbage-collector selection, connection-pool and thread-model tuning, virtual threads where they fit, caching tiers and load tests that stand in for month-end before month-end does.
Portfolio
3 Java builds written up in full: onboarding, lending and a service platform, each with its numbers.
FinTechA leading Small Finance Bank launched a 100% digital FD platform with compliance, security, and fraud prevention at its core. The solution cut onboarding to 15 minutes, boosted trust, and reduced support costs.
FinTechA cloud-native platform for fast, secure, and compliant personal loans. With smart eligibility, fraud detection, and multi-tenant scalability, it enables instant onboarding, quicker approvals, and seamless white-label deployment.
SaaS & TechnologyCreated a cross-platform web and mobile app for tractor servicing. With multi-language support and real-time tracking, it streamlines operations, boosts efficiency, and expands customer reach.
Benefits breakdown
Why hire us for Java, in five lines you can hold us to.
Java’s backward compatibility and long-term-support releases mean the service you ship this year is still supportable in ten — we plan the upgrade path in the first sprint, not the last.
Strong typing, mature testing tools and a transaction model that has run banks for decades — we use all of it, with contract tests and audit trails, where a wrong number is a regulatory event.
Virtual threads, tuned pools and the JVM’s garbage collectors handle month-end and campaign spikes; we prove it with load tests before your customers do.
Spring, Kafka clients, database drivers, security libraries, observability agents — every integration a regulated product needs has a mature Java client, maintained by someone.
Java engineers exist in every market you operate in; a stack your own team can staff and support is a stack that outlives the vendor.
Tech expertise
Java is the backend of this stack; here is what we ship around it. Every name with a page of its own is a link.
Explore the servicesComparative analysis
What changes when the team actually knows the stack, in six rows.
| Feature | DigiWagon | Other agencies |
|---|---|---|
| Backend architecture | Built like a boss — modular, mighty, made to last, and load-tested before launch. | Patchy blueprints that crumble under real-world traffic. |
| API mastery | REST, GraphQL, gRPC, webhooks — versioned, documented, idempotent. You name it, we ship it. | REST-only mindset with clunky API designs. |
| Estimation | Real timelines and budget, no plot twist — the estimate names its assumptions. | Estimate comes with ‘oops, missed that!’ |
| Security protocols | Dependency audits on every pull request, secrets out of the code, patches on a schedule. | Oh, did we forget that patch? |
| Post-launch care | We watch it like a hawk — monitoring, upgrades, incident response. Not even a blink. | Ghosting after launch — hope you have backup plans. |
| Documentation | Docs so clear even your interns can hand them off: OpenAPI, runbooks, decision records. | Documentation? Yeah, we will get back to you on that… |
Industries
Three of the nine industries we build for, with the Java work or the Java fit behind each, linked to the industry page.
01
Paperless fixed-deposit onboarding for a small finance bank — 98% identity-verification accuracy, a 30% lift in customer satisfaction — and a personal-loan engine with 60% faster approvals, both on Java.
Java in FinTech02
A multi-brand tractor service platform for owners and workshops — 50% faster service tracking, 40% smoother workshop coordination — on Java and Spring Boot with Flutter in front.
Java in Retail & eCommerce03
Plant systems, production and workforce platforms and the integrations between ERP, shop floor and payroll — the long-lived, high-integrity backends the JVM was built for.
Java in ManufacturingInsights
Writing from the engineering work: a guide to API-first development, redesigning a legacy dashboard without losing power users, and the ROI of a design audit in legacy enterprise software.
FAQ
Direct answers on Java versions, Spring Boot, modernising an old estate, performance and what our Java development services include after launch.
New services go on the current long-term-support Java and the current Spring Boot. We maintain and upgrade estates from Java 8 onwards, including Jakarta EE and older Spring, and plan the jump to a supported release as part of the engagement so the product never sits on an end-of-life runtime.
For backends where correctness, throughput and a decade of supportability matter — banking, lending, insurance, industrial platforms — yes. Modern Java is concise, virtual threads make concurrency simple, and the ecosystem is unmatched for regulated integrations. For a lightweight startup API we might recommend Node.js or Python instead, and say so.
That is the only way we do it. Characterisation tests go around the seams first, then a current JDK and framework, containers and pipelines, and only then the extraction of services that actually need independent scaling. The product keeps running throughout, and each stage is reversible.
We profile on production-shaped load before launch: garbage-collector choice, connection pools, thread model, caching tiers and query plans tuned against real data volumes. Load tests become release gates, so month-end or a campaign spike is rehearsed in staging before it arrives in production.
Often. We can lead a build, embed with your team or take a bounded piece such as an upgrade or an integration layer. Code review, architecture decision records and pairing are part of every model, so the knowledge lands in your team rather than leaving with ours.
Scheduled JDK and dependency updates, security patching, monitoring with alerting your team can read, incident response and a quarterly performance review. We hand over runbooks and documentation from day one and can run the platform for you, with you or hand it over entirely.
Tell us what the system has to guarantee and who has to run it, and we will show you comparable Java work before anything is scoped.
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