Services
Senior engineering for platforms that have to work
Four core practices — web, AI, SaaS and mobile — supported by design, integration, SEO and growth specialists. One delivery roadmap, three commercial models, and an estimator that answers “how much?” in seconds.
1.2K+
Enterprise projects delivered
2
Marketplace purchases
210+
Clients worldwide
3
Verified authors
Catalog
What we deliver
Select a service for its delivery roadmap, engagement options, consultation slots and a tailored estimator.
Web Development
High-performance web platforms
Server-rendered Next.js platforms, portals and commerce engineered for Core Web Vitals, accessibility and scale.
- Next.js / React App Router architectures
- Headless commerce & CMS integrations
- Core Web Vitals & technical SEO
- Accessibility (WCAG 2.2 AA) by default
AI Implementation
Production AI, not demos
RAG pipelines, document intelligence, AI agents and copilots integrated into your systems with evaluation, guardrails and cost controls.
- Retrieval-augmented generation over your data
- Document OCR & verification pipelines
- Agentic workflows with human review
- Evaluation harnesses, guardrails & cost monitoring
Custom SaaS Engineering
From MVP to multi-tenant scale
Multi-tenant SaaS products with billing, RBAC, audit trails and observability — built to pass enterprise security reviews.
- Multi-tenant data isolation
- Subscription billing (Razorpay, Stripe)
- RBAC, SSO & audit logs
- Queues, workers & observability
Mobile App Development
Native & cross-platform apps
React Native, Flutter and native iOS/Android apps with offline sync, push, payments and store-ready release pipelines.
- React Native & Flutter cross-platform
- Native Swift / Kotlin modules
- Offline-first sync & push notifications
- CI/CD to App Store & Play Store
Engagement frameworks
Fixed Price, Dedicated Team or Time & Materials
Every model includes IP assignment, a named delivery lead and the same engineering quality gates. The difference is how scope and budget flex.
| Framework | Fixed Price | Dedicated Team Most chosen | Time & Materials |
|---|---|---|---|
| Best for | Well-defined scope with a fixed launch date | Long-term product roadmaps and scale-ups | Evolving scope, R&D, audits and spikes |
| Scope definition | Signed-off backlog after a discovery sprint | Rolling backlog you prioritise every sprint | Prioritised backlog, re-planned weekly |
| Pricing | Fixed project price, milestone invoices | Monthly fee per team member | Hourly rates on approved timesheets |
| Budget control | Price locked; changes via change requests | Predictable monthly run-rate | Budget cap with burn-down alerts |
| Team composition | Chosen by DEV3 to fit the scope | Hand-picked with your interview | Flexible specialists on demand |
| Change flexibility | Moderate — impact-assessed change requests | High — re-prioritise any sprint | Highest — change direction any week |
| Reporting | Milestone demos and acceptance | Velocity, quality and sprint reports | Weekly timesheets and demos |
| Typical duration | 1–4 weeks per scoped release | 3 months and longer | 2 weeks to ongoing |
| Long-term terms | Programme pricing for multi-release roadmaps | 5–15% off for 3–12+ month commitments | 5–15% off committed monthly hours |
| Source code & IP assigned to you | |||
| Named delivery lead | |||
| Post-launch warranty period | |||
| Direct access to engineers | |||
| Scale team up or down monthly |
Long-term partnerships — negotiable
Committing to a longer engagement lowers your rate. Every term below is a starting point we negotiate with you, in writing, before work begins.
| Commitment | Discount | Also included |
|---|---|---|
| 3–5 month commitment | 5% off | Applied to every monthly invoice in the committed period |
| 6–11 month commitment | 10% off | Quarterly roadmap reviews with your delivery lead |
| 12+ month commitment | 15% off | Rate locked for 12 months and a dedicated delivery lead |
Conditions
- Monthly invoicing, billed in advance
- A minimum commitment term is agreed in the order form
- 30 days’ written notice to scale down or exit
- Discounts apply to the committed period only and are recalculated if the commitment is shortened
- Milestone acceptance within 5 business days of delivery
- IP transfers to you on full payment
- Price revisions only at renewal
Architecture roadmap
Six stages from discovery to hypercare
Click a stage to see what you receive. Each service tailors deliverables and durations — open a service page for its specific roadmap.
Stage 1 of 6
Discovery & scoping
Stakeholder workshops, success metrics, constraints and a prioritised backlog with acceptance criteria.
Typical duration: 3–5 days
Deliverables
- Discovery report & KPI baseline
- Prioritised backlog with acceptance criteria
- Content & SEO migration inventory
Scoping calculator
Instant project estimate
Every scope is planned for delivery within 1–4 weeks. The timeline updates as you go; submit an enquiry and our team will follow up within one business day.
Service
Platforms
System features (2 selected)
Core
Commerce
Data & AI
Experience
Operations
Technical stack preference
Third-party integrations: 2
Security compliance tier
Timeline expectation · every scope ships in 1–4 weeks
FAQ