Java Developer

Required Skills: CI/CD Pipeline, Data Structures, Microservices, Determining overall architectural principles, frameworks and standards, Cloud expertise (AWS, GCP, or Azure), Distributed Systems

Criteria:

• Candidate must have 6+ years of backend engineering experience, with 1–2 years leading engineers or owning major systems.
• Must be strong in one core backend language: Node.js, Go, Java, or Python.
• Deep understanding of distributed systems, caching, high availability, and microservices architecture.
• Hands-on experience with AWS/GCP, Docker, Kubernetes, and CI/CD pipelines.
• Strong command over system design, data structures, performance tuning, and scalable architecture
• Ability to partner with Product, Data, Infrastructure, and lead end-to-end backend roadmap execution.

Description

What This Role Is All About

We’re looking for a Backend Tech Lead who’s equally obsessed with architecture decisions and clean code, someone who can zoom out to design systems and zoom in to fix that one weird memory leak. You’ll lead a small but sharp team, drive the backend roadmap, and make sure our systems stay fast, lean, and battle-tested.

What You’ll Own

● Architect backend systems that handle India-scale traffic without breaking a sweat.

● Build and evolve microservices, APIs, and internal platforms that our entire app depends on.

● Guide, mentor, and uplevel a team of backend engineers—be the go-to technical brain.

● Partner with Product, Data, and Infra to ship features that are reliable and delightful.

● Set high engineering standards—clean architecture, performance, automation, and testing.

● Lead discussions on system design, performance tuning, and infra choices.

● Keep an eye on production like a hawk: metrics, monitoring, logs, uptime.

● Identify gaps proactively and push for improvements instead of waiting for fires.

What Makes You a Great Fit

● 6+ years of backend experience; 1–2 years leading engineers or owning major systems.

● Strong in one core language (Node.js / Go / Java / Python) — pick your sword.

● Deep understanding of distributed systems, caching, high-availability, and microservices.

● Hands-on with AWS/GCP, Docker, Kubernetes, CI/CD pipelines.

● You think data structures and system design are not interviews — they’re daily tools.

● You write code that future-you won’t hate.

● Strong communication and a let’s figure this out attitude.

Bonus Points If You Have

● Built or scaled consumer apps with millions of DAUs.

● Experimented with event-driven architecture, streaming systems, or real-time pipelines.

● Love startups and don’t mind wearing multiple hats.

● Experience on logging/monitoring tools like Grafana, Prometheus, ELK, OpenTelemetry.

Why company Might Be Your Best Move

● Work on products used by real people every single day.

● Ownership from day one—your decisions will shape our core architecture.

● No unnecessary hierarchy; direct access to founders and senior leadership.

● A team that cares about quality, speed, and impact in equal measure.

● Build for Bharat — complex constraints, huge scale, real impact.

Job Title : Node.js Developer / Backend Developer

Experience : 4+ Years

Job Location : Mumbai – Andheri

Work Mode : Work From Office (5 Days a Week)

Job Type : Full-time Opportunity

Role Overview :

We are seeking an experienced Node.js / Backend Developer to design, develop, and maintain scalable backend systems.

The ideal candidate will have strong hands-on experience with Node.js, Nest.js, relational and NoSQL databases, and AWS cloud services.

You will work closely with frontend developers, DevOps, and product teams to deliver secure, high-performance, and reliable backend solutions.

Mandatory Skills : Node.js, Nest.js, MongoDB, PostgreSQL, AWS, REST API development, strong backend fundamentals.

Key Responsibilities :

• Design, develop, and maintain scalable backend applications using Node.js & Nest.js

• Build and manage RESTful APIs and backend services

• Work with MongoDB and PostgreSQL for efficient data storage and retrieval

• Develop cloud-ready applications and deploy them on AWS

• Ensure application performance, security, and scalability

• Write clean, well-documented, and maintainable code

• Participate in code reviews and follow best engineering practices

• Troubleshoot, debug, and optimize existing applications

• Collaborate with cross-functional teams for end-to-end delivery

Required Skills & Qualifications :

• 4+ years of experience in Backend / Node.js development

• Strong hands-on experience with Node.js and Nest.js

• Experience working with MongoDB and PostgreSQL

• Good understanding of AWS services (EC2, S3, RDS, etc.)

• Experience building RESTful APIs

• Understanding of backend architecture, design patterns, and best practices

• Strong problem-solving and debugging skills

• Familiarity with version control systems (Git)

Good-to-Have Skills :

• Experience with microservices architecture

• Knowledge of Docker and CI/CD pipelines

• Exposure to message queues or event-driven systems

• Basic understanding of frontend-backend integration

Job Title: Python Developer (Full Time)

Location: Hyderabad (Onsite)

Interview: Virtual and Face to Face Interview (Last round)

Experience Required: 4 + Years  

Working Days: 5 Days

About the Role

We are seeking a highly skilled Lead Python Developer with a strong background in building scalable and secure applications. The ideal candidate will have hands-on expertise in Python frameworks, API integrations, and modern application architectures. This role requires a tech leader who can balance innovation, performance, and compliance while driving successful project delivery.

Key Responsibilities

1. Application Development

• Architect and develop robust, high-performance applications using Django, Flask, and FastAPI.

1. API Integration

• Design and implement seamless integration with third-party APIs (including travel-related APIs, payment gateways, and external service providers).

1. Data Management

• Develop and optimize ETL pipelines for structured and unstructured data using data lakes and distributed storage solutions.

1. Microservices Architecture

• Build modular, scalable applications using microservices principles for independent deployment and high availability.

1. Performance Optimization

• Enhance application performance through load balancing, caching, and query optimization to deliver superior user experiences.

1. Security & Compliance

• Apply secure coding practices, implement data encryption, and ensure compliance with industry security and privacy standards (e.g., PCI DSS, GDPR).

1. Automation & Deployment

• Utilize CI/CD pipelines, Docker/Kubernetes, and monitoring tools for automated testing, deployment, and production monitoring.

1. Collaboration

• Partner with front-end developers, product managers, and stakeholders to deliver user-centric, business-aligned solutions.

Requirements

Education

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.

Technical Expertise

• 4+ years of hands-on experience with Python frameworks (Django, Flask, FastAPI).
• Proficiency in RESTful APIs, GraphQL, and asynchronous programming.
• Strong knowledge of SQL/NoSQL databases (PostgreSQL, MongoDB) and big data tools (Spark, Kafka).
• Familiarity with Kibana, Grafana, Prometheus for monitoring and visualization.
• Experience with AWS, Azure, or Google Cloud, containerization (Docker, Kubernetes), and CI/CD tools (Jenkins, GitLab CI).
• Working knowledge of testing tools: PyTest, Selenium, SonarQube.
• Experience with API integrations, booking flows, and payment gateway integrations (travel domain knowledge is a plus, but not mandatory).

Soft Skills

• Strong problem-solving and analytical skills.
• Excellent communication, presentation, and teamwork abilities.
• Proactive, ownership-driven mindset with the ability to perform under pressure.

Experience: 3 to 5

Location: Bangalore

Wissen Technology is now hiring for a Senior Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. 

Required Skills:

• Exp. - 3 to 5 years
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.

About Us:

At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.

Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality. 

We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more. 

Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results. 

Today, Wissen Technology has a global footprint with 2200+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.

Website : www.wissen.com 

Responsibilities :

●     Designing and developing robust and scalable server-side applications using Python, Flask, Django, or other relevant frameworks and technologies.

●     Collaborating with other developers, data scientists, and data engineers to design and implement RESTful APIs, web services, and microservices architectures.

●     Writing clean, maintainable, and efficient code, and reviewing the code of other team members to ensure consistency and adherence to best practices.

●     Participating in code reviews, testing, debugging, and troubleshooting to ensure the quality and reliability of applications.

●     Optimising applications for performance, scalability, and security, and monitoring the production environment to ensure uptime and availability.

●     Staying up-to-date with emerging trends and technologies in web development, and evaluating and recommending new tools and frameworks as needed.

●     Mentoring and coaching junior developers to ensure they grow and develop their skills and knowledge in line with the needs of the team and the organisation.

●     Communicating and collaborating effectively with other stakeholders, including product owners, project managers, and other development teams, to ensure projects are delivered on time and to specification.

You are a perfect match, if you have these qualification :

●     Strong experience in Python and server-side development frameworks such as Flask or Django.

●     Experience in building RESTful APIs, web services, and microservices architectures.

●     Experience in using database technologies such as MySQL, PostgreSQL, or MongoDB.

●     Familiarity with cloud-based platforms such as AWS, Azure, or Google Cloud Platform.

●     Knowledge of software development best practices such as Agile methodologies, Test-Driven Development (TDD), and Continuous Integration/Continuous Deployment (CI/CD).

●     Excellent problem-solving and debugging skills, and the ability to work independently as well as part of a team.

Strong communication and collaboration skills, and the ability to work effectively with other stakeholders in a fast-paced environment

Job Responsibilities:

* Design, build, and maintain efficient, reusable, and reliable Java code

* Ensure the best possible performance, quality, and responsiveness of the applications

* Identify bottlenecks and bugs, and devise solutions to these problems

* Help maintain code quality, organization, and automatization

* Prepare the technical design of complex technology components

Mandatory Skills:

* Proficient in Java (JDK 1.7) or above JDK 8 preferable, with a good knowledge of its ecosystems with a knack for writing clean, readable Java code, writing reusable Java libraries along with knowledge of concurrency patterns in Java

* Solid understanding of object-oriented programming along with various design and architectural patterns

* Hands on experience with Spring, Spring Boot, JUnit

* Familiarity with concepts of MVC, Microservices, RESTful

At BACQ, our mission is to build financial services that are simple, accessible and affordable.

BACQ is founded by Sachin Bansal & Ankit Agarwal to build consumer-centric and technology-driven businesses in the BFSI (Banking, Financial Services & Insurance) space.

• Work on the development backend systems for our first product
• Build reliable, secure and performant backend systems
• Drive test coverage and continuous delivery automation within the team
• Mentor and provide feedback to teammates

• 2+ years of software development experience
• Strong computer science fundamentals
• Good knowledge of Java ecosystem
• Can write code that is readable, maintainable and performant
• Know the importance of tests and how to approach writing different types of tests
• Good understanding of relational databases, transactions, entity-relationship modeling
• Comfortable writing multi-threaded programs

• Understanding of domain-driven design concepts like ubiquitous language, bounded contexts, aggregates and domain events
• Know how to use test driven development as a design tool 
• Good intuition for the principles underlying object-orientation, particularly encapsulation
• Understand the importance of immutability and of reducing the state-space of objects
• Seek to identify key underlying ideas and use those as building blocks before reaching for shiny new tools
• Have read some of our https://docs.google.com/document/d/18eWIOPYs0Hi8Kr4lXTtP_XMJp_4BrBzOd9Eui8v_l-c/edit?usp=sharing">favourite books