Case 03
Revamp
Stitching Consistency –
Revamp for SiGREEN
Revamp
Context
5 squads, 30 + features, one scattered UI.
I’m leading a cross‑team push to weave them into a single, predictable experience now midway through transition with Siemens iX as the design‑system backbone.
North Star Goal
Cut design to dev time by 40% and lift CSAT to 4+
Project
SiGREEN
My Role / Team
1 Lead Product Designer
4 Product Designers
5 PO
1 Backend Architect
11 Front End Devs
2 Testers
Timeline
Jan 2025 - Current (Target Sept 2026)
Why It Mattered
42 % rise in usability bugs eroded customer trust.
Devs wasted 28 % of sprint capacity rebuilding similar components.
Competitors with polished UIs began winning deals we once owned.
Catalyst: During a quarterly review few customers failed to sort two grids the same way and asked, “Why does each page feel different?”
Strategy - 4 Pillars
Adopt Siemens iX
Battle‑tested, accessible components out of the box
Governance‑Lite Council
30‑min bi‑weekly sync (Design + Eng + PM) to approve, version, retire.
Sprintwise Component Refactor
Every squad (scrum team) commits fixed story‑points each sprint to replace legacy widgets with iX equivalents.
AG Grid Enterprise for Tables
Adopt the Enterprise license to unlock advanced grid capabilities (grouping, pivot, server‑side row model) and avoid costly custom builds; standardise tables across squads and products.
Decision proof: Enterprise license avoided ~300–400 dev hrs parity build (virtualization, grouping, pivot, server-side model, a11y); ongoing maintenance avoided ~100+ hrs/yr. See below Cost–Benefit analysis
Story in Action – Cassandra’s Day
Before:
Cassandra triple‑checked every grid, unsure how exports would behave.
After
(two sprints of refactor): Saved column presets + instant validation let her finish reports 2 × faster—and trust the numbers. She now pings support asking, “Which screens are next to get the new magic?”
Impact for Cassandra:
Report build time 18 → 10 mins (saved presets + instant validation), error rework down −35% on her team’s tickets.
Progress Checkpoint - Month 9
Delivery & Quality
Speed & Performance
Artefact Summary
Lessons So Far
Fixed story‑points beat big‑bang migration
Small, predictable slices survive shifting PO road‑maps.
Show, don’t tell.
Demoing the upgraded table convinced skeptical devs faster than any deck.
Metrics as common language
KPIs convert skeptics into sponsors.
What’s Next
Q3 2025 – Reach 65 % component reuse; publish self‑service component portal MVP.
Q4 2025 – Continue sprint wise component refactor; begin simplification of untouched low‑traffic pages (declutter & accessibility tweaks); automate Figma/GitHub linters.
H1 2026 – Hit 90 % reuse; sunset all legacy CSS.
H2 2026 – Establish product‑wide design‑system guild
Still Rolling…
By ring‑fencing sprint capacity instead of chasing a module‑by‑module overhaul, we turned a fragmented UI into a steadily converging one—without derailing feature road‑maps. Early data shows faster delivery, fewer bugs, and growing user trust. We’re halfway there and accelerating