We engineer the systems businesses run on.
Sync Labs is based in Sri Lanka, with 5+ years of experience. We deliver in two-week sprints, deploy through CI/CD, and our clients own their code and data. Contact: hello@synclabs.lk.
Sync Labs is a software engineering company based in Sri Lanka. We design, build and support custom business systems — multi-tenant retail and point-of-sale platforms, marketplaces with payments and payouts, lending and collection systems for distributors, and content-managed web platforms.
We cover the full delivery lifecycle: discovery, architecture, interface design, engineering, quality assurance, deployment and ongoing support. Projects run in two-week agile sprints with a working demo at the end of each, so clients see real progress throughout — and own everything we build, from the source code to the infrastructure it runs on.
Our engineers work on a modern, proven technology stack for web, mobile and cloud, chosen for long-term maintainability rather than trend. The problem decides the technology, not the other way round.
selected work
Systems we've delivered
2026
DayBook — lending & collection platform
Route-based lending and daily collection for distributors: role-based portals for head office, admins and field reps, PIN sign-in on Android, and a tenant boundary enforced in one module.
daybook.synclabs.lk(opens in a new tab)2025
GuideSL — verified tourism marketplace
A two-sided marketplace with guide verification, PayHere payments, commission and scheduled payouts, a dispute workflow, real-time chat and multi-language support.
guidesl.com(opens in a new tab)2025
ShopGuard — multi-tenant retail POS
One deployment running many shops: a platform console, a back office for inventory, staff, reporting and audit, and a phone-first cashier till in live use.
shopguard.synclabs.lk(opens in a new tab)2023
Happy Cool — invoicing system
Invoice generation and billing for a client's business. Delivered under a private engagement, so it is listed here rather than published as a case study.
Since 2022
50+ web platforms & business sites
Content-managed sites delivered with their own admin panel, search-engine metadata and structured data, built to load quickly on mobile networks.
See a sample(opens in a new tab)
how we deliver
Progress you can see every two weeks.
01
Discovery & scoping
Workshops with the people who will use the system, to map the real process, its exceptions and the reporting the business needs. Requirements are written as user stories with acceptance criteria, then estimated and prioritised.
You receive: a scope document, a prioritised backlog, and a fixed quote and timeline.
02
Architecture & design
The data model, system architecture, roles and permissions, and integrations — payment gateways, SMS, email — are designed before code is written, alongside the interface for the key screens.
You receive: the data model, an architecture outline, and UI designs to approve.
03
Sprint planning
Work is planned in two-week sprints. Each one opens with a planning session that sets a sprint goal and commits stories from the backlog, ordered by business value and technical risk.
You receive: the sprint goal and the list of stories committed to it.
04
Build & code review
Every change is built on its own branch and goes through a pull request, a code review and automated checks — type checking, linting and tests — before it is merged.
You receive: reviewed, tested increments, merged continuously.
05
Sprint review & QA
Each sprint ends with a demo of working software on a staging environment. Your feedback goes straight into the next sprint's planning, and release candidates pass regression and user acceptance testing.
You receive: a staging link, a sprint demo, and UAT sign-off before release.
06
Release & support
Releases go out through a CI/CD pipeline with versioned database migrations and a rollback plan. After launch we watch the system closely through a hypercare period, then move to an agreed support plan.
You receive: the production release, documentation and handover, and a support plan.
inside every sprint
- Day 1
- Sprint planning
- Daily
- Team stand-up
- Weekly
- Progress update to you
- Mid-sprint
- Backlog refinement
- Day 10
- Sprint review & live demo
- Sprint close
- Retrospective
Two weeks is short enough that a misunderstanding costs days rather than months, and long enough to ship something you can actually use.
engineering standards
What every project ships with.
Type-safe end to end
TypeScript across the whole system, with schema validation wherever data enters it — forms, APIs and webhooks — so bad input is rejected at the door, not discovered in a report.
Automated testing
Unit and integration tests around business rules, and end-to-end browser tests for the journeys that move money or data. Tests run on every change, not before a release.
Security by design
Role-based access control, tenant isolation enforced in one place, hashed credentials, signed sessions, and least-privilege access to production systems.
Data integrity
Relational data modelling, versioned migrations, transactions for anything that must happen together, an audit trail where money or stock moves, and automated backups.
CI/CD & environments
Separate development, staging and production environments, with builds, checks and deployments automated through a pipeline — so a release is routine, not an event.
Documentation & handover
Architecture notes, setup guides and an admin manual. Repositories, hosting and data sit in your accounts from day one, so the system is never held hostage.
how we work with you
Six things you can hold us to.
01
Fit before features
The first release does the job the business actually needs, properly. Further features are prioritised once the core is proven in real use, not before.
02
You own it
Source code, database, deployment — all yours, in your accounts. No lock-in to a platform you have to keep paying us to unlock.
03
Direct access to engineers
You work with the people designing and building your system. No layers of account management between a question and the person who can answer it.
04
The right tools for the job
Technology is chosen per project — what the business needs, what its team can run, and what will still be supported years from now. Never novelty for its own sake.
05
Transparent timelines
Estimates we stand behind, progress you can see every sprint, and early warning the moment something threatens the date — not the week after.
06
Fast where it's felt
Pages that load, forms that submit, tables that don't stall at ten thousand rows. Performance is a feature the user notices.
have a system in mind?
Let's talk scope, timeline and budget.
Usually replies within one working day. The reply comes from the people who would do the work.