Python Machine Learning Developer

1) Be open to learn new frameworks like Hapi.JS , Typescript , Nest.JS

2) Strong DB concepts , and hands on knowledge on MongoDB , REDIS

3) Experience working with micro-services will be a plus

4) Experience working with JWT and IAM systems will be a plus

5) Experience working with Postman , Swagger will be a plus

6) TDD knowledge is an advantage and also working with Unit Test code and familiar with test code coverage concepts.

7) Strong operating system knowledge is a plus with knowledge of how to manage threads.

8) Working experience with RabbitMQ , Kafka will be a plus

9) Strong knowledge of JS internals is a must.

You can contact me on nine three one six one two zero one three two

Job Role: Sr. Full Stack Developer

Experience- Min 6 Years

Location-Bangalore

Company Profile- https://www.wissen.com/

Domain 

Fintech, Banking, Capital Markets, Investment Banking 

Job Summary 

We are looking for a highly experienced Senior Full Stack Engineer with strong hands-on expertise in Java, Spring Boot, AWS,React, and DynamoDB. The ideal candidate will have a strong background in building secure, scalable, high-performance applications for financial services, with experience in regulated environments such as banking, capital markets, or investment banking. 

Key Responsibilities 

• Design, develop, and maintain scalable backend services using Java and Spring Boot. 
• Build responsive and reusable user interfaces using React. 
• Design and optimize data models and access patterns in DynamoDB. 
• Develop RESTful APIs and integrate them with front-end and downstream systems. 
• Work on microservices-based architecture and cloud-native application design. 
• Collaborate with product managers, business analysts, architects, QA, and DevOps teams to deliver business-critical solutions. 
• Ensure application security, performance, reliability, and maintainability. 
• Participate in code reviews, architecture reviews, and design discussions. 
• Troubleshoot production issues and support enhancements in live environments. 
• Follow SDLC, Agile, and DevOps best practices in a fast-paced financial services environment.
•  

Required Skills 

• 8+ years of experience in software development. 
• Hands-on experience working on React, AWS cloud environment and DynamoDB.  
• Proficiency in Java, J2EE, Spring, Hibernate, REST API, Microservices.  
• Experience in developing applications using J2EE Design Patterns and AWS services. 
• Strong problem-solving skills and attention to detail. 
• Excellent communication and teamwork skills. 
• 
  
• Qualifications 
• Bachelor’s or Master’s degree in Computer Science, IT, or a related discipline. 
• Proven experience delivering enterprise-grade applications in regulated financial environments. 

Key Responsibilities

Backend Development

• Design, develop, and maintain scalable backend services using Rust, Python, and TypeScript.
• Build high-performance microservices and APIs for AI-driven products.
• Develop fault-tolerant, secure, and maintainable distributed systems.
• Design event-driven architectures and asynchronous processing pipelines.
• Implement caching, message queues, and database optimization strategies.

AI & Machine Learning Integration

• Build and maintain backend infrastructure supporting LLMs, Generative AI, RAG systems, and AI Agents.
• Integrate models from providers such as OpenAI, Anthropic, Gemini, and open-source LLMs.
• Develop vector search solutions using Pinecone, Weaviate, Qdrant, or similar technologies.
• Build AI workflows for content generation, summarization, sentiment analysis, and conversational intelligence.
• Optimize AI inference pipelines for performance and cost efficiency.

System Architecture

• Design scalable architectures capable of handling high traffic and large volumes of data.
• Develop real-time processing systems and data pipelines.
• Implement observability, monitoring, logging, and alerting mechanisms.
• Drive performance tuning and latency optimization across services.

Cloud & DevOps

• Deploy and manage applications on AWS, GCP, or Azure.
• Work with Docker, Kubernetes, CI/CD pipelines, and Infrastructure as Code.
• Ensure system reliability, security, and scalability. 

Required Skills: Advanced Flutter & Dart Expertise, Scalable Mobile Architecture Design, Performance Optimization & Profiling, OTT & Media App Engineering, Code Quality, Leadership & Cross-Functional Collaboration

Criteria:

• 6+ years of total software development experience with minimum 3+ years in Flutter
• Product-based company experience is mandatory (B2C scale preferred)
• Proven ability to own end-to-end Flutter mobile architecture for high-scale apps
• Strong expertise in Dart, Flutter SDK internals, and advanced state management (Bloc / Riverpod / Provider)
• Hands-on experience with platform channels and native integrations (Android & iOS)
• Deep knowledge of performance optimization: app startup time, FPS, memory leaks, widget rebuilds, rendering pipeline
• Experience with profiling tools (Dart DevTools, Android Profiler, Xcode Instruments)
• Strong skills in offline-first architecture, caching layers, and API integrations
• Ability to optimize video playback, downloads, DRM, and OTT workflows
• Strong command of clean code, SOLID principles, and scalable mobile system design
• Experience reviewing code and mentoring engineers (Senior IC role)

Description

Role Overview

We are looking for an experienced Flutter SDE III who can take complete ownership of architecture, performance optimization, and app scalability for our OTT mobile applications. This is a senior individual contributor role requiring deep technical expertise and the ability to influence design decisions at a product level.

Key Responsibilities

1. Architecture & Design (High-Impact IC Role)

• Own the end-to-end architecture of company’s Flutter mobile applications.

• Design scalable, modular, testable app ecosystems aligned with OTT-specific performance constraints.

• Lead decisions around state management, navigation hierarchy, API structure, offline capabilities, and security.

2. Performance & Device Optimization

• Diagnose and resolve mobile performance bottlenecks, including:

  o App startup time, FPS drops, memory leaks.

  o Heating issues, over-rendering, and expensive widget rebuilds.

  o Battery optimization, efficient network calls, caching strategy.

• Run in-depth profiling using tools like Dart DevTools, Android Profiler, and Xcode Instruments.

3. OTT-Specific Engineering

• Optimize video playback workflows for low-latency streaming.

• Implement efficient background processes for downloads, DRM, content sync, and push notifications.

4. Product & User Experience Ownership

• Collaborate closely with Product, Backend, and Video Engineering teams.

• Convert business/product requirements into high-performance technical solutions.

• Ensure UI/UX consistency across platforms while maintaining performance budgets.

5. Code Quality & Leadership

• Write clean, extensible, and maintainable code with strong adherence to SOLID and reactive programming principles.

• Review code for mid-level and junior engineers; act as a mentor across teams.

• Establish engineering standards, internal frameworks, and reusable components for long-term scalability.

Required Skills & Experience

Technical Must-Haves

• 6+ years of total experience with 3+ years in Flutter for large-scale products.

• Mandatory product-based company background (B2C scale preferred).

• Strong expertise in:

  o Dart, Flutter SDK internals

  o Bloc, Riverpod, Provider, or other state management approaches

  o Custom animations, rendering pipeline, shader-based optimization

  o Platform channels (Android/iOS) and native integrations

  o API integration, caching layers, offline-first architecture

• Strong understanding of mobile system design, scalable architecture, and low-level performance engineering.

Good to Have

• Experience with video streaming apps, OTT platforms, or media-heavy applications.

• Understanding of analytics frameworks (Firebase, Segment, Mixpanel).

• Exposure to CI/CD pipelines, automated testing, and fastlane.

Personality & Mindset

• Product thinking, not just feature-building.

• Ownership-driven with strong ability to take strategic technical decisions.

• Comfortable working in a fast-paced 0→1 and scale-up environment.

Why Join company?

• Work on a high-growth OTT app with millions of users.

• Opportunity to own the core mobile experience end-to-end.

• Build impact-heavy features at scale with a lean, highly skilled engineering team.

• Back office administration and support personnel
• Good organizational skills
• These tasks may include, proofreading, providing support service to the team, data entry
• Multitasking & Clerical work

RequiredSkills:

• Minimum of 4-6 years of experience in data modeling (including conceptual, logical and physical data models. • 2-3 years of experience inExtraction, Transformation and Loading ETLwork using data migration tools like Talend, Informatica, Datastage, etc. • 4-6 years of experience as a database developerinOracle, MS SQLor another enterprise database with a focus on building data integration process • Candidate should haveanyNoSqltechnology exposure preferably MongoDB. • Experience in processing large data volumes indicated by experience with BigDataplatforms (Teradata, Netezza, Vertica or Cloudera, Hortonworks, SAP HANA, Cassandra, etc.). • Understanding of data warehousing concepts and decision support systems.

• Ability to deal with sensitive and confidential material and adhere to worldwide data security and • Experience writing documentation for design and feature requirements. • Experience developing data-intensive applications on cloud-based architectures and infrastructures such as AWS, Azure etc. • Excellent communication and collaboration skills.

A candidate who has a strong background in the design and implementation of scalable architecture and a good understanding of Algorithms, Data structures, and design patterns. Candidate must be ready to learn new tools, languages, and technologies

Microservices, MySQL/Postgres, Kafka/Message Queues, Elasticsearch, Data pipelines, AWS Cloud, Clickhouse/Redshift

• Minimum 6 years of experience
• Good understanding of various database types: RDBMS, NoSQL, GraphDB, etc
• Ability to build highly stable reliable APIs and backend services.
• Should be familiar with distributed, high availability database systems
• Experience with queuing systems like Kafka
• Hands-on in cloud infrastructure AWS/GCP/Azure
• Highly plus if know one or more of the following: Confluent ksql, Kafka connect, Kafka streams
• Hands-on experience with data warehouse/OLAP systems such as Redshift, click house and added plus. 
• Good communication and interpersonal skills

• Ability to join a small and growing team, and work with some of the coolest people you've ever met
• Opportunity to make an impact, and leave your mark on this organization.
• Competitive compensation, with the ability to shape your own career trajectory
• Go Extra Mile with Learning and Development

A wholesome opportunity in a fast-paced environment that will enable you to juggle between concepts, yet maintain the quality on content, interact and share your ideas and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at Xoxoday.

A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore and Dublin. We have three products in our portfolio: Plum, Empuls and Compass. Works with over 1000 global clients. We help our clients in engaging and motivating their employees, sales teams, channel partners or consumers for better business results.

This role is for a passionate and meticulous Test Engineer, with a strong focus on ensuring better customer experience through hands-on implementation of QA best practices

• Designing test strategies, covering functional and non-functional requirements, planning, execution, reporting and automating
• 100% automation accountability
• Multitask on release deliverables, customer issues, stake-holder management
• Ensuring traceability matrix processes between requirements, test design, test cases artifacts to achieve 100% customer requirements coverage
• Plan and achieve code coverage targets via test design and test automation
• Prompt and meticulous in reporting status of ongoing tasks/deliverables
• Challenging status-quo, responding to opportunities/organization needs, showing proactive accountability with a strong focus on fundamentals of Test engineering

Mandatory skills:

• Deep understanding of SaaS/Web-based applications/ Micro Services architecture
• Strong in fundamentals of Functional and Non-functional testing concepts (Reliability, Stress, Load, Limits, Performance, Scalability, Usability, Security, Configuration/Compatibility, ad-hoc, etc.)
• Automation :
  Selenium (Java) OR
  API testing (Jmeter, RestAssured)
• SDLC, STLC (Agile), JIRA, Defect Life Cycle
• At least 1 - 4 years of experience in tech product companies.
• BE/BTech/MTech graduate

PSQs:

• Are you willing to work as a 100% hands-on Individual Contributor?
• Do you have hands-on experience in test design strategies, covering both Functional and Non-functional testing?
• How many years of hands-on automation experience do you have?
• Please specify scripting languages and tools?
• Are you flexible to work from the office (Bangalore) as and when needed, in a hybrid model?

You will work with a top-notch tech team and report to the engineering head.

A wholesome opportunity in a fast-paced environment that will enable you to juggle between concepts, yet maintain the quality of content, interact, and share your ideas, and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at Xoxoday.

Xoxoday is a rapidly growing fintech SaaS firm that propels business growth while focusing on human motivation. Backed by Giift and Apis Partners Growth Fund II, Xoxoday offers a suite of three products - Plum, Empuls, and Compass. Xoxoday works with more than 2000 clients across 10+ countries and over 2.5 million users. Headquartered in Bengaluru, Xoxoday is a 300+ strong team with four global offices in San Francisco, Dublin, Singapore, New Delhi.

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. We however assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.