Remote B2B engineering for product teams, agencies, consultancies and staffing partners. We build features, REST APIs and microservices in existing Java/Spring Boot systems, fix production problems and slow SQL, and add senior capacity without opening permanent headcount.
10+ years of hands-on Java/Spring engineering experience · B2B through Pashyaa Technologies Pvt. Ltd. · Remote from India, flexible EU/US overlap
Capacity available: currently accepting new Java/Spring Boot engagements.
Delivered and independently verified on Upwork Freelancer
Pune, India — remote delivery worldwide NDA + IP protection
Inheriting a Java/Spring codebase, or about to build on one?
We review the code, architecture, data access, tests and delivery pipeline, then give you prioritised findings and a concrete remediation plan.
Indicative — scoped before pricing.
Scoped to one service or module. Implementation quoted separately. An engineering review — not a penetration test or a compliance certification.
What we do
Fixed-scope offers carry a duration and an indicative price range on the services page; contract engagements are quoted per engagement.
Feature development in existing codebases, REST APIs and microservices, third-party and event-driven integrations, SQL performance, cloud deployment, modernisation and production troubleshooting.
Led by an engineer with 10+ years of hands-on Java/Spring experience in regulated software — banking, healthcare and cross-border compliance.
Hands-on senior Java/Spring engineering delivered remotely from India — long-term capacity, a small delivery pod, or white-label delivery for product teams, consultancies and staffing partners.
B2B via Pashyaa Technologies Pvt. Ltd. · C2C-compatible · GST invoiced · Flexible EU/US overlap
Delivered by an engineer with 10+ years of hands-on Java/Spring experience in regulated software.
Building RAG and LLM features into existing Java/Spring Boot systems.
InfoYog, our own production AI assistant: Java 21, Spring Boot 3.x, pgvector-backed retrieval and RAG answer routing.
Secure code review, security-audit remediation, and security design review for Java and LLM systems.
Vulnerability remediation and security-audit remediation across banking and healthcare platforms, static-analysis remediation on an enterprise portal, and the secrets, auth and retrieval boundaries in InfoYog.
Who we work with
Where to start
Send the stack, duration and start date. We reply with a named senior engineer, their availability and the rate for the engagement.
Delivery model, resource governance, commercial terms, and the entity details your procurement team will ask for.
Technology
Hands-on across the Java/Spring backend, the data layer, and the cloud and test tooling around it.
Work
A cross-border VAT compliance and reporting platform, a US pharmacy benefits platform built on Spring Boot microservices and Kafka, a global partner and retailer portal, and InfoYog — our own production AI assistant on Java 21 and Spring Boot 3.x.
FAQ
Quick answers — if you have a specific requirement, we’ll tailor the approach.
Five: fixed-scope / fixed-price, B2B engineering delivery, a small Pashyaa delivery pod, defined-scope delivery, and white-label / sub-vendor. We’ll recommend one based on your timeline, how well-defined the scope already is, and who needs to be client-facing. All of it is delivered remotely from India, with flexible EU/US overlap, under a B2B contract with Pashyaa Technologies Pvt. Ltd.
Yes. We routinely work under NDA and follow IP protection best practices including access controls, least-privilege permissions, and secure development workflows.
Java, Spring Boot and Spring Security are the core, with JPA/Hibernate, PostgreSQL, Oracle, MySQL and Kafka on the data side, and React with TypeScript where full-stack delivery is needed. AWS or GCP, Docker and CI/CD for delivery.
Tests with JUnit, Mockito and Testcontainers, code review on every change, and CI/CD that runs them. We work inside your existing SDLC, conventions and security baselines rather than imposing our own.
The Code Review & Technical Audit is our smallest fixed-scope engagement: 2–3 working days, indicatively ₹35K–60K depending on scope. It is a common starting point before longer-term work.
Share the stack, the scope and the expected duration — we’ll respond with next steps within 1 business day.
