System architecture
We map domains, data flows and failure modes before a line of code is written, so the platform scales without a rewrite.
05 · Full-Stack Development
One team for every layer, from database to deploy
We design and build the whole system — data model, APIs, front end and the infrastructure it runs on — so nothing falls between vendors. The result is a platform your team can run, extend and trust.
You own the code and IP Weekly demos Reply within one business day
build-orchestrator
mainsrc/
queue.ts
pool.ts
retry.ts
types.ts
index.ts
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export interface BuildJob {
repo: string;
region: "ca-west-1";
}
export async function queue(
job: BuildJob,
): Promise<Run> {
return await pool.add(job);
212
Tests passed
0
Type errors
1.4s
Build time
Watching src/ — optimised rebuild on save
Full-Stack Development, in short
OlDevs provides full-stack development from its Vancouver studio.System architecture, REST and GraphQL APIs, relational and document databases, front-end applications, and the cloud infrastructure and CI/CD pipelines that run them. One team owns every layer, so corporations, associations, government bodies, franchises and startups get a single accountable partner rather than a hand-off between vendors. Every engagement ends with documented code, infrastructure as code, and full ownership transferred to the client.
Key facts
- 01Scope
- Architecture through to deployment
- 02Back end
- Node.js, Python, .NET, Go
- 03Front end
- React, Next.js, Vue, TypeScript
- 04Databases
- PostgreSQL, MySQL, MongoDB, Redis
- 05Cloud & DevOps
- AWS, Azure, Google Cloud, Terraform
- 06Ownership
- Client owns all code and infrastructure
05 · Full-Stack Development
Every layer, engineered to hold.
Six layers, one accountable team
API design & integration
REST and GraphQL APIs with versioning, authentication and documentation your partners can build against on day one.
Database engineering
Schemas, indexing and migration strategies tuned for the way your data is actually read and written.
Front-end engineering
Component-driven interfaces in React, Next.js or Vue that stay fast under real data and real users.
Cloud infrastructure & DevOps
Infrastructure as code, CI/CD pipelines and containerised deploys that make every release routine.
Observability & reliability
Logging, metrics, tracing and alerting wired in from the first deploy, so problems are found before users find them.
Process
How we deliver a full-stack build
Discover
We map your users, data, integrations and constraints, and agree what success looks like in measurable terms.
Architect
We design the system — data model, service boundaries, API contracts and infrastructure — and document every decision.
Build
Cross-functional sprints deliver working, tested vertical slices you can click through every week.
Harden
Load testing, security review, observability and disaster-recovery drills happen before launch, not after.
Launch & run
We deploy, hand over documentation and runbooks, and stay on to support, monitor and extend the platform.
How we work
How we build the whole stack
01
Architecture before code
Every engagement starts with written architecture decision records that name the trade-offs, so nobody discovers them in production.
02
Contract-first APIs
We define the OpenAPI or GraphQL schema first and generate clients and mocks from it, so front-end and back-end work proceed in parallel.
03
Typed end to end
TypeScript on the front end, typed back-end languages and generated database types catch whole classes of bugs before they ship.
04
Infrastructure as code
Environments are defined in Terraform or CDK and reproducible in minutes, not rebuilt from memory.
05
Automated testing at every layer
Unit, integration and end-to-end tests run on every pull request, and nothing merges red.
06
Security built in, not bolted on
Least-privilege access, secrets management, dependency scanning and OWASP checks are part of the pipeline from day one.
Who it's for
Full-Stack Development for organisations that have to get it right.
Whether the audience is a customer, a member, a citizen, or your own team, the work has to hold up under real use.
Corporations
Internal platforms, customer portals and system integrations that must fit existing identity, data and compliance requirements.
Associations & government
Member- and citizen-facing services with accessibility, bilingual support, Canadian data residency and procurement-ready documentation.
Franchises
Multi-location platforms with central control, per-location configuration and reporting that rolls up cleanly to head office.
Entrepreneurs & startups
Version one of the product built on foundations that survive version ten, delivered by a team that has shipped many times before.
12+
years shipping production systems
25K+
projects delivered across every layer
99.9%
uptime target on platforms we run
Selected work
Selected full-stack development work.
Client names are withheld; the problem and the outcome are the point.
01Development
A regional quick-service restaurant franchise group with 40+ locations in Western Canada
- Industry
- Food service & franchising
- Services
- iOS app development · Android app development · Full-stack development
- Duration
- 22 weeks
“The pilot store's manager asked when the other locations were getting it, which told us more than any dashboard could.”
Challenge
Franchisees were paying third-party delivery commissions on orders that started as walk-ins, and the loyalty programme lived on paper stamp cards that could not be tracked or audited. The group had no single view of what was selling where, and menu changes had to be keyed into each location's till by hand.
Solution
We built native iOS and Android apps for ordering, pickup and loyalty, backed by a full-stack platform that holds the menu, pricing and promotions once and pushes them to every location. Orders route straight into each store's kitchen display through the point-of-sale vendor's API, and loyalty points accrue on any order, in-app or at the counter. A franchisee dashboard shows sales, redemptions and prep times by store and by hour. Working builds went to a pilot store from week six, and the rollout ran region by region so store managers could train on a real app rather than a slide deck.
31%
Of pickup orders now placed in-app
4.7/5
Average rating across both app stores
1 screen
To publish a menu change to every location, down from 40+ tills
02AI
A national commercial insurance brokerage with around 450 staff across six offices
- Industry
- Insurance & financial services
- Services
- AI development · Generative AI & LLMs · Full-stack development
- Duration
- 14 weeks
“We were nervous about an AI giving confident wrong answers. What we got is a tool that says it cannot find something when it should, and shows its work when it can.”
Challenge
Brokers answered policy-wording questions by searching a shared drive of 30,000 PDF wordings, endorsements and carrier bulletins, or by asking whichever senior colleague happened to be free. New hires took months to become confident, and the compliance team had no way to know which document version a broker had relied on when advising a client.
Solution
We built an internal assistant on a large language model that answers questions only from the brokerage's own document library and shows the exact passage and version it drew from. The retrieval layer indexes wordings, endorsements and bulletins as they land, keeps carrier-specific permissions intact, and declines to answer when it cannot find support in the source material. It runs inside the brokerage's own cloud tenancy, so no client or carrier data leaves their environment, and an audit log records every question, answer and citation. The full-stack build covers the ingestion pipeline, the broker-facing web app and the compliance review screens.
78%
Of wording questions resolved without escalating to a senior broker
11 min → 40 s
Median time to a cited answer
100%
Of answers traceable to a document version
03Development
A regional transit agency serving a metropolitan area of about one million residents in western Canada
- Industry
- Public transit
- Services
- iOS app development · Android app development · Full-stack development
- Duration
- 7 months
“Riders get the same trip and the same fare on either phone now, and we make a change once instead of three times.”
Challenge
The iOS and Android apps had been built by different vendors two years apart and had drifted badly: trip planning behaved one way on one platform and another way on the other, and fare purchases differed again. Each app talked directly to its own mix of back-end services, so a schedule or fare change meant several separate updates and one of them was always late. Riders reviewed the apps accordingly, and staff fielded the complaints.
Solution
OlDevs put a single API in front of the scheduling, fare and service alert systems, written in TypeScript on Node with a published contract both clients build against. iOS was rebuilt in Swift and SwiftUI and Android in Kotlin and Jetpack Compose from one shared specification, both meeting WCAG 2.2 AA for text scaling and screen reader use. A feature now ships to both platforms in the same release, and the agency's own developers own and maintain the whole stack.
FAQ
Full-Stack Development — questions we hear first.
A focused platform with a defined scope typically takes 12 to 20 weeks from discovery to launch, with a working version you can use within the first month. Larger systems with several integrations are delivered in phases, and we agree the phase plan before work begins.
You do. All source code, infrastructure definitions, documentation and cloud accounts are created in your name or transferred to you, and OlDevs retains no licence over your product.
We work mainly in TypeScript, Node.js, Python, .NET and Go on the back end; React, Next.js and Vue on the front end; PostgreSQL, MySQL, MongoDB and Redis for data; and AWS, Azure or Google Cloud for infrastructure. We choose the stack to fit your team's skills and the platform's needs rather than a house preference.
Yes. We offer ongoing support that covers monitoring, security patches, dependency updates, performance tuning and new features, or we hand over fully to your internal team with documentation and runbooks.
Security is built into the pipeline: least-privilege access, encrypted data at rest and in transit, secrets management, dependency scanning and OWASP checks on every release. For government and regulated clients we support Canadian data residency, PIPEDA and accessibility requirements, and we document controls for procurement and audit.
Yes. We plug into your repositories, ticketing and code-review process, pair with your engineers, and share architecture decisions in writing so your team can own the system when we step back.
Every platform is scoped individually, so there is no single figure; scope, integrations and infrastructure all shape it. Request a quote with a short description of what you need and we will reply within one business day with a clear estimate and options.
Let’s connect
Let’s scope your full-stack development project.
Tell us what you’re building. We’ll reply within one business day with next steps and a tailored quote — no obligation.