Software Engineer — Backend & Integrations
Saadat Hussain
I build the dependable parts of software — third-party integrations, async
processing pipelines, and cloud services that keep platforms and their partners in
sync under real production load. Currently engineering integrations at
SupplyLine in Dhaka.
Dhaka, Bangladesh · Open to backend & platform roles
About
I'm a backend-focused software engineer with around five years of experience across
payment and logistics integrations, property-management SaaS delivery, and real-time
aviation surveillance. I gravitate toward the hard, unglamorous work: getting external
APIs to reconcile correctly, cutting query latency, and keeping asynchronous pipelines
healthy long after launch.
I've also led teams and owned partner relationships end-to-end — running discovery,
scoping integrations, and carrying accounts from kickoff to steady-state adoption. I
value clean architecture (DDD, hexagonal, SOLID), but never at the expense of shipping.
Experience
-
Software EngineerSupplyLine
2025 — Now
Dhaka, Bangladesh · Platform integrations, onboarding & backend engineering
- Own the design and delivery of third-party integrations connecting the platform to external payment-gateway and logistics APIs, plus the automated reconciliation that keeps partner systems in sync in production.
- Cut API and query latency 35–40% through PostgreSQL schema redesign, selective indexing, and query-plan analysis while resolving production issues under load.
- Serve as technical point of contact for onboarding integration partners — discovery, scoping, and live-environment troubleshooting through full adoption.
- Build async pipelines with Celery and Redis; deploy and operate backend services on AWS (EC2, ECS, Lambda) with CI/CD in GitHub Actions.
-
Delivery Team LeadAssureProperty Solutions
2022 — 2024
Florida, USA (remote) · Long-term property-management SaaS delivery
- Led a 5-person delivery team serving long-term property-management SaaS clients, owning solution design and day-to-day execution across 1,000+ engagements.
- Onboarded 3 major U.S. clients end-to-end — mapped each workflow, designed tailored delivery, and drove every account from kickoff through go-live and adoption.
- Owned the primary relationship for 25+ external partners and mentored the team, turning ambiguous long-term goals into repeatable action.
-
Software EngineerASL Systems
2021 — 2022
Dhaka, Bangladesh · Real-time aircraft surveillance platform
- Led backend R&D for a multilateration (MLAT) aircraft-surveillance system, delivering a functional real-time tracking platform across engineering teams.
- Designed and implemented Mode-S, Mode-A/C, and ADS-B signal decoding and multilateration algorithms for real-time aircraft localisation.
- Built services in Python, Flask, Redis, PostgreSQL, and MongoDB to process high-frequency signal data, and integrated geospatial and Google Maps APIs for live map visualisation.
Skills
- Languages
- Python, Java, JavaScript / Node.js
- Frameworks
- Flask, Celery, React
- Data & Messaging
- PostgreSQL, MongoDB, Redis
- Cloud & DevOps
- AWS (EC2, ECS, Lambda), Docker, GitHub Actions
- Testing
- PyTest, unittest, Postman
- Practices
- Microservices, Domain-Driven Design, Hexagonal Architecture, SOLID, REST
Projects
StoryBookAI
Personal
An AI storybook generator that turns a user's photo into a story character. I built the
image-to-narrative pipeline with the Groq API and Hugging Face vision and language
models, orchestrated through a Flask backend.
Python · Flask · Groq API · Hugging Face
On GitHub
Code
Integration work, backend experiments, and side projects live on my GitHub — worth a
look if you'd like to see how I actually build things.
github.com/Saadat108 →