11+ Microsoft Servers administration Jobs in Kolkata | Microsoft Servers administration Job openings in Kolkata

Position: Windows SRE

Responsibilities:

• Windows Site Reliability Engineer with experience in managing large websites where Millions of customers hit
• Manage and monitor all installed systems and infrastructure
• Install, configure, test and maintain operating systems, application software and system management tools
• Among your responsibilities will be the installation and configuration of storage, servers, Microsoft servers (Cluster Services, File Services, Active Directory Services, Certificate Authority services), Virtual Infrastructure (Hyper-V), IIS, MS SQL and backup system
• Proactively ensure the highest levels of systems and infrastructure availability
• Monitor and test application performance for potential bottlenecks, identify possible solutions, and work with developers to implement those fixes
• Maintain security, backup, and redundancy strategies
• Write and maintain custom scripts to increase system efficiency and lower the human intervention time on any tasks
• Participate in the design of information and operational support systems
• Provide 2nd and 3rd level support
• Liaise and collaborate with vendors and Zacks personnel for problem resolution, decision making, knowledge sharing

Requirements:

• Minimum 5+ years of Windows support experience, 7, 8, 10, and Microsoft Server (all)
• Windows server expertise
• Familiar with WAN/LAN technologies
• Understanding of the OSI model
• Virtualization - MS Hyper-V, VMware, vSan
• Strong understanding of Internet protocols including HTTP(S), SSL, TCP, IP
• MS IIS administration and configuration
• MS Active Directory
• MS Storage Space
• DNS and DHCP
• SSL certificates and PKI
• Familiar with the ITIL framework
• Strong PowerShell experience
• Information Security experience a plus Other Qualifications
• Excellent attention to detail

Experience: 8-10 years

Senior Python Developer to lead the development of scalable, high-performance backend systems and data-driven applications. You will work on building robust services, APIs, and data workflows that power real-time and batch applications.This role is ideal for a seasoned developer who thrives on solving complex problems, building reliable software, and working across data and engineering teams. Youll play a key role in designing and developing Python-based systems that interface with big data frameworks, cloud platforms, and analytics tools.Key Responsibilities

• Design and develop robust Python-based backend services and microservices.
• Build RESTful APIs and integrations with third-party systems and internal tools.
• Work with data workflows involving ingestion, transformation, and validation.
• Develop and maintain ETL/ELT pipelines using Python, SQL, and Airflow.
• Collaborate with DevOps teams to deploy, monitor, and scale applications in cloud environments (AWS, Azure, GCP).
• Optimize code for performance, scalability, and maintainability.
• Write unit and integration tests, participate in code reviews, and follow CI/CD best practices.
• Work with cloud storage, databases, and data lake technologies like S3, Parquet, and DuckDB.
• Collaborate with data scientists, analysts, and engineers to enable data access and modeling.

Required Skills & Qualifications

• 5+ years of experience in backend software development, primarily in Python.
• Strong understanding of OOP, modular design, and Python design patterns.
• Experience with web frameworks (e.g., Flask, FastAPI, Django).
• Hands-on experience with data processing tools like Pandas, SQLAlchemy, PyArrow.
• Proficiency with SQL and database technologies (PostgreSQL, DuckDB, etc.).
• Experience with Airflow for workflow orchestration.
• Knowledge of building scalable, distributed applications and microservices.
• Familiarity with cloud platforms (AWS, Azure, GCP) and containerization tools (Docker, Kubernetes).
• Solid understanding of version control (Git), testing frameworks (PyTest), and CI/CD pipelines.
• Excellent problem-solving, debugging, and communication skills.

Preferred Skills (Nice to Have)

• Experience with data processing frameworks like Apache Spark or Vaex.
• Familiarity with data storage formats and tools like Parquet, Iceberg.
• Exposure to data streaming platforms (Kafka, Kinesis, Flink).
• Experience integrating backend systems with AI/ML pipelines or BI platforms.
• Understanding of security standards and compliance (GDPR, HIPAA, SOC2).
• Background in metadata-driven or event-driven architectures.

Data - AI / ML Engineer 

Full-Time   |   On-site, Kolkata   |   Immediate Joining   |   4+ years experience

ABOUT US 

Company Name: Freeflow ventures

We are a venture building and investment firm focused on emerging markets across India, the Middle East, and Africa. We work with early-stage startups -diagnosing gaps, structuring interventions, and preparing them for investor-readiness through a proprietary data and intelligence platform.

Our platform combines automated data verification, startup scoring, and structured workflow automation to bring consistency and credibility to early-stage investment decisions. We are at an active build and expansion phase, and this role sits at the core of that infrastructure.

ROLE OVERVIEW

We are looking for a Data - AI / ML Engineer who can own both the data pipelines that bring verified information into our platform and the intelligence models that turn that information into reliable startup scores.

This is a dual-responsibility role. You will be expected to build and maintain robust data infrastructure as well as develop, calibrate, and improve machine learning models. Both are equally important to the platform.

You will work closely with the Platform Owner and alongside a Backend Engineer who owns system integrations and workflow logic. Your work produces the scored intelligence output. The Backend Engineer's work connects that output to platform actions. The two roles are tightly interdependent and require close daily collaboration, especially in the first 30 days.

Note: You are the first technical hire on the platform team. The Backend Engineer joins the same week. Clear communication, well-defined handoff points, and shared documentation between the two of you are non-negotiable from Day 1.

WHAT YOU WILL DO

Data Pipeline

• Build and maintain pipelines that collect, clean, and normalize data from multiple external sources into a consistent, usable format
• Design connector architecture that allows individual data sources to be added, swapped, or removed without rebuilding the entire pipeline
• Implement automated data quality checks that catch bad data before it reaches the scoring layer -anomaly detection, constraint enforcement, and schema validation
• Build an automated eligibility screening system that verifies whether a startup has sufficient verified data before assessment begins
• Ensure the pipeline is resilient -critical data signals must have backup sources so a single vendor failure does not disrupt platform output
• Structure data storage to support different regulatory requirements across multiple countries -data from different regions must be handled according to the rules of that region

AI and Machine Learning

• Audit the existing scoring engine before making any changes -understand what it does, how it was built, and what would be lost if it were modified
• Calibrate scoring models against real portfolio data so that scores are meaningful, consistent, and comparable across different startup types and stages
• Build confidence scoring logic that determines when the system is certain enough to act autonomously and when it should route to human review
• Ensure every model output is explainable -investors must be able to see exactly which data points drove a score, not just the final number
• Build a feedback loop so that real-world outcomes feed back into the model over time, making it progressively more accurate
• Maintain a structured data store of assessment outputs and outcomes that the model uses to improve

Working With the Backend Engineer

• Define a clear data contract at the handoff point -what data you produce, in what format, and what the Backend Engineer can expect to receive
• Collaborate on trigger logic -what score thresholds or confidence drops should fire what system actions
• Align on data schema requirements so that the APIs the Backend Engineer builds conform to the structure your pipeline produces
• Communicate blockers early -the pipeline and backend system are built simultaneously, so delays on one side directly affect the other
• Document everything you build so the Backend Engineer and Platform Owner can understand, debug, and extend it without depending on you for every question

WHAT WE ARE LOOKING FOR

Skills are divided into two categories. Must Have means the role cannot function without it. Good to Have means it gives you an edge.

Skill

Priority

Data Engineering

Building and maintaining data pipelines from multiple sources

Must Have

Data normalization and schema design

Must Have

Automated data quality validation

Must Have

API integration across different source types

Must Have

Pipeline orchestration and scheduling

Must Have

Cloud infrastructure -storage, compute, and deployment

Must Have

Version control and code documentation

Must Have

AI and Machine Learning

Building and calibrating supervised machine learning models

Must Have

Model explainability -making model outputs traceable and interpretable

Must Have

Confidence scoring and threshold calibration

Must Have

Experiment tracking and model versioning

Must Have

Building feedback loops that improve models over time using real-world outcomes

Must Have

Natural language processing or document understanding

Good to Have

Vector databases and semantic search

Good to Have

Collaboration and Context

Ability to define clear data contracts and handoff points with backend engineers

Must Have

Clear written documentation of pipeline logic, model decisions, and failure modes

Must Have

Prior experience working in or with early-stage startups

Good to Have

Exposure to financial data, investment platforms, or data verification systems

Good to Have

WHAT WE OFFER

• Competitive compensation based on experience -discussed during the interview process
• Ownership of both the data and intelligence layers from Day 1 -this is not a support or maintenance role
• Direct access to the Platform Owner and Founder 
• Close collaboration with a Backend Engineer from Day 1 -the two roles are designed to work as a unit
• Work on a genuinely novel problem in an emerging market context
• On-site Kolkata with a small, high-accountability team
• Opportunity to scale the platform across multiple international markets

Qualifications

• someone has IT/technical background to improve the IT operations
• Account Management and Sales skills
• Experience in Sales Management
• Digital Media and Digital Marketing skills
• Excellent communication and interpersonal skills
• Ability to build and maintain relationships with clients
• Knowledge of e-commerce and online marketing
• Strong analytical and problem-solving skills

Role Description:

This is a full-time on-site role for a Digital Sales Manager at Bigpage. The Digital Sales Manager will be responsible for selling software, website design, Facebook marketing, SEO, PPC, Social media, digital media, and digital marketing.

The role involves day-to-day tasks such as creating and implementing sales strategies, maintaining client relationships, and utilizing digital marketing techniques to drive sales.

• Prepare sales proposal with quality and concise information
• Follow up the prospects on a regular basis to increase the sales
• Build a strong communication process for team and clients
• Weekly or Biweekly training and coaching to improve communication, sales and after sales
• Build a 30, 90 and 180 days plan to improve the new sales pipelines and renewals
• Report to management with actionable insights (i.e: Critical business issues, opportunities, key actions need to be taken, etc.) on regularly basis

Job brief

We are looking for an experienced and passionate Front-end developer to join our IT team. You will be responsible for building the ‘client-side’ of our web applications. You should be able to translate our company and customer needs into functional and appealing interactive applications.

If you’re interested in creating a user-friendly environment by writing code and moving forward in your career, then this job is for you. We expect you to be a tech-savvy professional, who is curious about new digital technologies and aspires to combine usability with visual design.

Ultimately, you should be able to create a functional and attractive digital environment for our company, ensuring great user experience.

Skills Required:

• Must Have: HTML5, CSS3, Javascript, JSon, Bootstrap
• Good to Know: Photoshop, Illustrator, Indesign
• Good communication skills in English is mandatory

Requirements:

• 3 to 5 years full time experience as a Front End HTML Developer
• Hands on experience with mark-up languages
• Familiarity with browser testing and de-bugging
• In-depth understanding of the entire web development process (design, development and deployment)
• Understanding of layout aesthetics
• Knowledge of SEO principles
• An ability to perform well in a fast-paced environment
• Excellent analytical and multitasking skills
• BSc degree in Computer Science or relevant field

Responsibilities:

• Use markup languages like HTML to create user-friendly web pages
• Maintain and improve website
• Optimize applications for maximum speed
• Design mobile-based features
• Collaborate with back-end developers and web designers to improve usability
• Get feedback from, and build solutions for, users and customers
• Write functional requirement documents and guides
• Create quality mockups and prototypes
• Help back-end developers with coding and troubleshooting
• Ensure high quality graphic standards and brand consistency
• Stay up-to-date on emerging technologies

Shift Availability :

Monday to Friday : 2:15pm to 11:30pm | Alt Saturdays till 7:30pm

Drop facilities provided

Complete Work From Office ( Salt Lake - Sector 5)

CTC, Bonuses & Rewards: -

Salescom Services Private Limited is an equal opportunity employer in the local industry. Our operations and company visions are quite a niche and heavily focused on being massively successful operations engaged in next-generation sales & marketing wins, support, and information technology-enabled services & solutions. CTC for the right employee is not pre-defined as such however will be a best-fit match to the local industry

standards. Come, interview with us, figure out if we both are the right fit for each other, and the rest will follow suit.

• Installing and maintaining the Oracle database software.
• Creating storage database structures with high-level security features.
• Altering storage structures to meet the evolving needs of the company.
• Setting up database user accounts.
• Training users on how to access the information in the database.
• Finding and debugging malfunctioning programs affecting the database integrity.
• Creating autonomous database backups.
• Regularly updating the database security protocols.

We are hiring IN OFFICE ONLY.

Office located in the beautiful Astra Towers in Rajarhat Kolkata.

We are looking for Senior Laravel Developers that have experience with Laravel Framework PHP, and VueJs.

You will be working right away with other senior Laravel Developers that know the products. You will be learning the projects, and helping them clean up and polish our tech better. We are a product based company.

A little about us:

Klizo Solutions has over 50 employees and is located in the New Town area, near CC2. Our employees range from graphic designers, back-end developers, iOS and Android Developers, and more. We are primarily a product-focused company. Our founder is from the USA and spends about 6 months a year here going back and forth. We develop technologies around his products and develop products for a few other clients. We are looking to expand to more locations, and are hiring for those reasons. You can see a company video here: https://klizos.com/about-us/

Preferred & Required knowledge and Duties:

• MVC Structure
• SQL concept
• Eloquent Relationships
• HTTP middleware
• Basic knowledge of JQuery
• Basic command of Laravel (How to create Model, Controller, migration, middleware )
• Experience of Vue.js
• Experience with Git
• Experience integrating third-party APIs
• Experience with payment APIs

Required Shifts:

We are expected to work Monday - Friday

We may rarely be needed on a Saturday if a project is required.

BONUS Knowledge (not required):

• MongoDB
• Worked with Jira
• Knows Github / Repo / Source control
• Worked with Bitbucket

Job Types: Full-time, Permanent, In Office

Benefits

• Bonuses based on performance
• Additional training will be available and may be required
• Clean office, professional hardware, and a positive team.

• The main roles and responsibilities would be:
• Deliver high quality mobile apps on Android platforms.
• Create best practice, drive initiatives to build reusable frameworks, components and solutions.
• Engage with the team to create a knowledge centre on Android.
• Minimum experience of 1 years needed. Ideally more than 2 years.
• Maps based apps.
• Payment gateway integration: (PayPal, Stripe, Paytm etc).
• Integration of webservices
• Marketplace apps
• Live Streaming
• Offline application development.
• Strong OO design and programming skills in Java
• Android SDK
• JSON/REST API
• Social Media APIs
• UML/Design Pattern
• Knowledge of Retrofit,Volley,Dagger2,Realm,RxJava,Espresso
• Knowledge of android architecture component(LiveData etc).
• Working Experience on MMVM and MVP architecture
• Experience in SQL and NOSQL databases.
• Familiarity with cloud message APIs and push notifications 
• Understanding of Googles Android design principles and interface guidelines 
• Proficient understanding of code versioning tools, such as Git.
• Work closely with the leadership team to define roadmap and development plans
• Help define and implement standards and promote best practices for the Android development team
• Tackle daily challenges with your creative problem solving recommendations
• Mentor and contribute knowledge to the rest of the team and the organization
• Strong knowledge of Android UI design principles, patterns, and best practices
• Experience with threading, and performance tuning
• Ability to understand business requirements and translate them into technical requirements