Senior Back-End Developer

Zoho; Bengaluru; On-site; INR 1,000,000 - 1,200,000; Full time

Job summary

Zoho in Bengaluru, India is seeking a hands-on Senior Back-End Developer who writes production-grade server-side code in Python, builds REST APIs, and owns data models and deployments on AWS.

You will design Python services (Flask/FastAPI), optimize SQL, plan migrations, ensure security, and contribute to tests and deployment pipelines while mentoring less experienced teammates.

Qualifications

• 5+ years hands-on backend development experience.
• Solid Python backend experience building REST APIs (Flask or FastAPI).
• Ability to write advanced SQL and reason about its execution.

Responsibilities

• Design, build, and maintain Python services and REST APIs consumed by frontends.
• Write and optimize advanced SQL with minimal ORM reliance.
• Model relational schemas, indexing, and query optimization.

Skills

Python backend

REST APIs

SQL queries

AWS

Authentication & JWT

Testing (pytest)

Git/Docker/CI-CD

Tools

Docker

CI/CD pipelines

Flask

FastAPI

Job description

Wearelookingforahands-onSeniorBack-EndDeveloperwhowritesproduction-gradeserver-sidecode.Youwill

designandbuildtheservicesanddatalayerbehindourapplicationsusingPython,withrelationaldatabases

underneath—alldeployedandoperatedonAWS.

Thisisabuilder'srole,notacoordinator's.YoushouldbecomfortablewritingcomplexSQLbyhand,designingREST

APIsthatotherteamsdependon,reasoningaboutperformanceandfailure,andowningyourcodethroughtesting,

deploymentandproductionsupport.

WhatYou'llDo

• Design,build,andmaintainPython(Flask/FastAPI)servicesandRESTAPIsconsumedbyourfrontendsand
• WriteandoptimiseadvancedSQL—multi-tablejoins,subqueries,CTEs,andwindowfunctions—withoutleaningonanORMtodothethinkingforyou.
• Modelandevolverelationalschemas,designindexes,andtuneslowqueriesusingEXPLAIN/EXPLAINANALYZE.
• Planandrunschemamigrationssafelyagainstlivedata.
• Handleauthentication,authorisation,andthesecurityoftheendpointsyouexpose.
• Buildbackgroundjobs,queues,andscheduledwork,andmakethemsafetoretry.
• Writemeaningfulunitandintegrationtestsforthecodeandmodulesyouship.
• Deploy,monitor,andtroubleshootservicesonAWS,andimprovebuildandreleasepipelines.
• Reviewpeers'code,upholdqualitystandards,andmentorlessexperienceddevelopers.

WhatWe'reLookingFor

Thisisaseniorback-endrole—weexpectdepthinPythonandinrelationaldatabases,andtheabilitytorunwhat

youbuild.

• 5+yearsofrelevant,hands-onback-enddevelopmentexperience.
• Python—solidbackendexperiencebuildingRESTAPIs(FlaskorFastAPI),notjustscripting.
• SQL—abilitytowriteadvancedqueriesfromscratchandreasonabouthowtheyexecute;PostgreSQLand/or
• MySQLinproduction.
• Schemadesign,indexing,andqueryoptimisationonrealdatavolumes.
• AWS—practicalexperiencedeployingandrunningworkloads(e.g.ECS/Fargate,Lambda,RDS).
• APIsecurity—authenticationandauthorisation(JWT,OAuth2)andcommonOWASPrisks.
• Testing—abletowriteproperunitandintegrationtestswithpytest.
• ComfortwithGitworkflows,Docker,andCI/CDpipelines.

ThisRoleIsNotaFitIf

• YouworkonlyinJavaandhavenoPythonexperienceorfamiliarity.
• YourelyentirelyonORMsandcannotwriterawSQLqueriesyourself.
• YourPythonisscriptingandautomationonly—youhaveneverbuiltandrunaproductionservice.
• YouhaveneverworkedwithAWS.(ExperienceonGCPorAzureisaplus,butAWSexperienceisrequired.)
• Youhaveneverwrittentestsforyourowncode.
• Youarelookingforarolethatismostlyfront-endwork.

NicetoHave

• AsyncPython(asyncio)andanunderstandingofconcurrencytrade-offs.
• Queuesandbackgroundprocessing—Celery,SQS,orKafka.
• CachingstrategieswithRedis,andknowingwhennottocache.
• Infrastructureascode(TerraformorAWSCDK).
• Observability—structuredlogging,metrics,tracing,andusefulalerts.
• NoSQLstores(MongoDB,DynamoDB)alongsiderelationaldatabases.
• Enoughfront-endfamiliarity(AngularorReact)todebuganintegrationendtoend.

CTC range is 10-12L