Operator · online

Haffi Mazhar

Senior Software Engineer · Oxford, UK

Live video and control for autonomous vehicles, in <200ms.

Software engineer with 7+ years in backend development and real-time systems. I build FastAPI services and cloud infrastructure, tune Python services for performance, and test reliability at very high scale. Currently building low-latency teleoperation for autonomous vehicles at Oxa, and previously founding engineer on a consumer sports platform.

Cam_front · AV-07 · Remote assistRec

Negotiating · Fibre--:--:--:--

Glass-to-glass

--ms

WebRTC · UDP

ICEgathering candidates
ICEconnectivity checks
DTLShandshake
SRTPkeys derived
RTPH.264 720p30 track
Awaiting signal

Transport link

RTT: --ms
Jitter: --ms
Bitrate: --Mb/s
FPS: --
Loss: --%
Ctrl: --ms

G2G latency · 24s200ms budget

7+ yrs

Backend & real-time

WebRTC

H.264 / VP9 over UDP

3 links

Fibre · 4G · Starlink

GCP · AWS

Terraform-managed

[01] Telemetry

Key achievements

CH-01 · video● stream

<200ms

Live video latency

g2g ms · budget 200

Fleet-wide AV teleoperation over an optimised WebRTC pipeline.

CH-02 · control● stream

<50ms

Control messaging

rtt ms · budget 50

Bidirectional operator-to-vehicle messaging across fibre, 4G and Starlink.

CH-03 · load test○ archive

15M

Concurrent users

concurrent users (M)

Performance and chaos testing for Sky's identity platform.

CH-04 · issuance○ archive

10,000s

Vouchers issued

vouchers issued, cumulative

ASOS digital loyalty launch at Bink.

[02] Session log

Experience

Full resume (PDF) →

2024-09 → NOW
Session 05
Oxa
Active
Senior Software Engineer, Autonomous Vehicles Remote Assist · Oxford, UK
- 01Architected and built multi-client video streaming and remote control with WebRTC, enabling fleet-wide teleoperation across regions and AV platforms.
- 02Achieved sub-200ms video latency and under 50ms bidirectional messaging latency using WebRTC (H.264/VP9 over UDP) across fibre, 4G and Starlink.
- 03Deployed a real-time WebSocket service on GCP Cloud Run with FastAPI, Redis and Cloud SQL, scaling to concurrent vehicle/operator sessions with strong connection reliability.
- 04Provisioned GCP Cloud SQL, Redis and Pub/Sub infrastructure with Terraform.
WebRTCFastAPIRedisGCPTerraform
2024 → 2026
Session 04
EggMonkey
Closed
Founding Engineer (part-time venture) · Boston, UK
- 01Took a consumer sports platform from concept to production, generating £20k total revenue and £1.3k MRR, owning product discovery, architecture and delivery.
- 02Partnered directly with the CEO to turn customer needs into scoped features and a pragmatic roadmap; recruited and managed UI/UX and customer-service hires.
- 03Built the full-stack platform from scratch with Next.js, React, TypeScript, Node.js and PostgreSQL: auth, onboarding, player profiles, fixture booking and matchmaking, subscriptions, football video highlights and an operations admin portal.
- 04Architected the cloud infrastructure, including Stripe payments and subscriptions, Mux video streaming, S3, SES notifications, Vercel hosting and DNS.
Next.jsTypeScriptPostgreSQLStripeMux
2023-10 → 2024-08
Session 03 · 11m
Move.ai
Closed
Backend Python Developer · London, UK
- 01Shipped multi-tenant SaaS services using FastAPI on AWS Lambda, integrating DynamoDB, Stripe and Auth0.
- 02Added Datadog performance dashboards and standardised CI/CD in GitHub Actions for more reliable, visible deploys.
FastAPIAWS LambdaDynamoDBStripeDatadog
2022-01 → 2023-10
Session 02 · 1y 10m
Bink
Closed
Backend Python Developer · Ascot, UK
- 01Delivered retailer APIs with FastAPI/Django, Postgres, Redis and RabbitMQ for digital loyalty; supported the ASOS launch issuing tens of thousands of vouchers.
DjangoFastAPIPostgresRabbitMQRedis
2019-11 → 2021-12
Session 01 · 2y 2m
Sky
Closed
Software Engineer, Performance · Leeds, UK
- 01Optimised Sky Identity to handle spikes of ~10 million concurrent users through scaling, resource tuning and load balancing.
- 02Introduced chaos and failover testing for APIs serving ~15 million concurrent users.
Load testingChaos testingKubernetes

[03] System status

Skills

Subsystems23 modules · all nominal

01 Languages
Nominal
- Python
- Go
- C++
- TypeScript
02 Real-time systems
Nominal
- WebRTC
- WebSockets
- gRPC
- FastAPI
03 Reliability & performance
Nominal
- Latency reduction
- Load testing
- Chaos/failover testing
- Horizontal scaling
04 Cloud & infrastructure
Nominal
- GCP
- AWS Lambda
- Kubernetes
- Terraform
- IAM
- PostgreSQL
- DynamoDB
- Redis
- RabbitMQ
- Grafana
- Prometheus