Ohjelmointi>Back-end kehitys

Backend API development

Backend API development
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Tietoja tästä palvelusta

I design and build reliable backend systems in Python and Django, from REST and GraphQL APIs to async pipelines and event-driven architecture. I work to production standards: tested, observable, and built to scale without rewrites. Good fit if you need a backend that holds up under real load and is easy for your team to maintain.


Palvelupaketit

Voit tutustua alta osaajan luomiin valmiisiin paketteihin. Lopullinen hinta ja työn sisältö sovitaan yhteydenoton jälkeen.

API Starter - MVP Stage alk.
900,00 €

Up to 5 REST endpoints with basic CRUD, input validation, and error handling. Suitable for MVPs or adding a small feature to an existing backend.

Full API Build alk.
3 000,00 €
Production Backend alk.
5 000,00 €

Palvelun ehdot

The client must have a defined project scope or a brief describing the system's purpose, expected traffic, and any existing infrastructure. Access to the codebase repository and relevant environment configs (staging/production) is required before work begins.

Osaajan tiedot
Farjmand Z
Farjmand Z
Full Stack Engineer
Tampere
Englanti
40-59 / h
Sopimukset
Freedomlyn Code of Conduct
Lue ohjeistus tästä
Tietoa minusta

Shipping slows down when the backend gets messy. I spend most of my time making sure that doesn't happen, through clean architecture, solid integrations, and observability tooling that keeps teams unblocked.

Most recently at Podero I owned a dozen third-party integrations (Bosch, Daikin, SMA, Smartcar) and built the Claude agents now used by 15 people across product, engineering, and customer success, diverting around 8 PRs a month away from the engineering queue.


I work across the full stack in Python, Node.js and TypeScript, and I care a lot about clean...

Näytä lisää...
Taidot ja työkalut
front_end_development
system_architecture
web_development
back_end_development
api_development
+24
Kiinnostuksen kohteet
Grillaus
Koripallo
Ruoanlaitto ja leivonta
Tanssi
Neulominen ja virkkaaminen
+2

Työkokemus

Podero
1/2024 - 3/2026
Senior Full Stack Engineer
<p>--- Device Integration at Scale</p><p>Designed and shipped production integrations for 7+ OEMs including Vaillant, Bosch, Daikin, Nibe, Viessmann, SMA, and Smartcar — covering OAuth2, API client development, real-time telemetry ingestion, and remote device control, all behind feature flags for safe rollouts.</p><p><br></p><p>--- Energy Optimization &amp; Automation</p><p>Built asynchronous pipelines for energy trading and device steering decisions, delivering ~27% electricity bill savings for customers. Developed pricing engines resolving spot market and day-ahead prices, plus daily statistics pipelines from raw measurements to customer-facing dashboards.</p><p><br></p><p>--- EV Charging</p><p>Built the EV platform layer: webhook-based onboarding via Smartcar, brand-aware device selection, idempotent data processing, and a resilient charging command system with retry scheduling.</p><p><br></p><p>--- Frontend &amp; Localization</p><p>Led a full rebrand of the device onboarding experience (React/TypeScript), simplified flows, improved error handling, and shipped the platform in 4 European languages.</p><p><br></p><p>--- Platform Infrastructure &amp; DX</p><p>Built shared libraries adopted across all integrations: HTTP tracking client, API response storage, retry-aware cache locking, and a data validation framework. Reduced integration duplication and accelerated onboarding of new manufacturers.</p>
Reality Metaverse
9/2022 - 5/2025
Backend and Blockchain Engineer
<p>Web3 startup building fractional NFT (fNFT) infrastructure on the Polygon blockchain - enabling users to own, trade, and earn royalties from fractional digital assets.</p><p><br></p><p>- Engineered backend services for fNFT auctions, trading, and passive income distribution, bridging on-chain smart contract events with off-chain processing systems.</p><p><br></p><p>- Built and stabilized asynchronous pipelines for wallet events, asset transfers, and royalty distributions on Polygon; added observability instrumentation throughout.</p><p><br></p><p>- Set up BigQuery analytics on GCP to monitor passive income generation, fNFT transaction volumes, and user onboarding activity at scale.</p><p><br></p><p>- Migrated approximately 40% of legacy Web2 user flows to Web3 architecture, integrating wallet authentication and smart contract state into the React frontend.</p><p><br></p><p>- Built a React marketplace for fNFT browsing, buying, and selling.</p>
Biztrons
1/2021 - 9/2022
Frontend and Blockchain Engineer
<p>- Dutch Auction Smart Contract: Developed a dutch Auction smart contract for Ethereum blockchain in solidity having features of whitelisting and OG minting. Used Remix IDE for compiling and testing.</p><p><br></p><p>- Solana NFT Minting Contract: Developed a program in Rust to mint NFTs in Solana Blockchain using Metaplex Storefront.</p><p><br></p><p>- NEAR Protocol Contract: Developed a Rust program that enables users to fractionalize NFTs while minting.</p><p><br></p><p>- Cardano Tokenization: Developed and minted Native Tokens in Cardano Blockchain using cardano-cli and Daedalus Wallet.</p>

Koulutus

Punjab University
Associate Degree of Information Technology, Computer Science
Valmistumisvuosi 2018

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