
Senior Backend Engineer - Core systems
at Tech startup based in Bangalore
We are looking for a Senior Backend Engineer with a strong background in building distributed, scalable, and high-performance backend systems. The ideal candidate has 6+ years of backend engineering experience, including 3+ years in microservices or distributed architecture, and deep expertise in Python, FastAPI, PostgreSQL, Redis, and async I/O patterns.
The candidate will own backend services end-to-end — from architecture and design to implementation, optimization, and production support — while working closely with cross-functional teams to deliver mission-critical systems.
Key Responsibilities
1. Backend Architecture & Development
- Architect, design, and implement backend services using Python (preferably FastAPI) with clean, maintainable, and scalable code.
- Develop microservice components, service communication layers, and distributed workflows.
- Build APIs and backend modules optimized for performance, fault tolerance, and low latency.
2. Distributed Systems & Scalability
- Design and maintain distributed systems capable of handling high throughput and large-scale operations.
- Implement inter-service communication patterns (REST, event-driven, message queues, pub/sub).
- Ensure system resiliency through redundancy, graceful degradation, and autoscaling strategies.
3. Asynchronous & Event-Driven Architecture
- Build async workflows, background tasks, and pipeline services leveraging asyncio or async frameworks.
- Develop event-driven components including producers, consumers, and event processors.
- Optimize I/O-heavy operations to maximize concurrency and throughput.
4. Data Storage, Pipelines & Caching
- Design relational schemas, write optimized SQL queries, and work with PostgreSQL performance tuning (indexes, partitions, query planning).
- Implement caching strategies, rate limiting, distributed locks, and session storage using Redis.
- Build data validation pipelines and compliance-driven data flows ensuring data correctness and auditability.
5. Security, Reliability & Observability
- Implement authentication, authorization, encryption, and secure API practices.
- Build monitoring, alerting, metrics, and tracing systems using modern observability tools.
- Diagnose production issues, identify bottlenecks, and drive long-term fixes and improvements.
6. Code Quality & Technical Leadership
- Conduct detailed code reviews and ensure engineering best practices across the team.
- Participate in technical roadmap planning, architectural discussions, and system design decisions.
- Mentor junior and mid-level engineers; drive a culture of technical excellence and ownership.
Required Qualifications
- 6+ years backend engineering experience.
- 3+ years building microservices or distributed systems.
- Strong expertise in Python and frameworks like FastAPI (or Flask/Django with async exposure).
- Deep understanding of async I/O, concurrency models, and asynchronous programming in Python.
- Strong experience with PostgreSQL (schema design, advanced queries, optimization).
- Hands-on experience with Redis for caching, queues, session management, and distributed patterns.
- Experience with event-driven architectures, message processing, or streaming systems.
- Solid understanding of system design, scalability principles, and API lifecycle management.
- Experience working with CI/CD pipelines, containerization (Docker), and cloud environments.

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Requirements:
- Bachelor's degree in engineering with a specialization in computer science or a related field.
- 5+ years of experience as a software engineer in a product development setting.
- Love of technology and experience with one or more programming languages: Java and Python.
- Experience in full-stack development, including designing APIs and integration patterns, implementing security, and implementing frameworks for unit and end-to-end testing.
- Experience with microservices architecture.
- Experience in one or more frameworks like FastAPI, Spring, GRPC, Flask, etc.
- Extensive experience in a test-driven development environment.
- Understanding of CI/CD practices, including code check-in policies, automated unit tests, automated code deployments, etc.
- Ability to grasp new technologies and use them effectively to create industrial-strength software.
Preferred Qualifications:
- Good communication skills. You can communicate well in the English language with product managers, your team members, and external stakeholders to understand their needs and convey yours in a clear, precise mannerverbally or in writing.
- Strong collaboration skills. You have demonstrated the ability to work with both senior and junior technical professionals and get work done. You quickly earn the trust of the people you work with. People enjoy and have fun working with you.
- Deadline oriented. You understand that deadlines are meant to be met. Challenges will surface, and obstacles and roadblocks will cause delays, but you plan for them in advance and still ship your features on time to meet your commitments.
- Bias for action. Your default setting is to take action and not wait for things to happen. You love to learn about new technologies and advancements in the software industry.
Benefits at 314e Corporation:
- Medical Benefits
- Office Game space
- Referral Program
- Holiday parties
About Company
Our client is in the business of delivering cutting-edge software solutions, hardware systems, and IT services. It lends the right technological edge to governments and businesses. This enables them to achieve their organizational objectives efficiently and effectively to scale their businesses to newer heights.
Minimum Requirements/Qualifications:
• Bachelor’s/Master’s degree in computer science, Computer Engineering or a related field is preferred.
• Must have at least 5 to 7 years of experience in application development (Java,Spring Framework), Deployment(Apache Tomcat & Nginx)
• Sound knowledge of Object-Oriented Programming (OOP) Patterns and Concepts.
• Knowledge & hands-on experience of Java, Spring Framework, Spring Security, JSP, Apache Tomcat, Nginx is a must.
• Must have experience with Bootstrap CSS, jQuery etc.
• Basic Understanding of PostgreSQL, MVC (Model-View-Controller) Pattern, JDBC (Java Database Connectivity), and RESTful web services.
• Relevant Knowledge of Java GUI frameworks according to project requirements.
• Experience in handling external and embedded databases.
Roles & Responsibilities
• Develop new modules, patches & Updates/upgrades for an existing application (developed in-house by the client)
• Bug fixing, and updating of software.
• Analyze user requirements to define business objectives.
• Maintain Java-based applications that can be high-volume and low-latency.
• Identify and resolve any technical issues arising.
• Write well-designed, testable code.
• Conducting software analysis, programming, testing, and debugging.
• Support continuous improvement, investigating alternatives and technologies, and presenting for architectural review.
Job Description:
Look for candidates who are preferably immediate joiners and have stability in career
Skills - DS Algorithms, Oops Concept,
Job Brief-
· Understand product requirements and come up with solution approaches
· Build and enhance large scale domain centric applications
· Deploy high quality deliverables into production adhering to the security, compliance and SDLC guidelines
Job Description: As a .NET + Angular Developer, you will be responsible for developing and maintaining web applications using .NET technologies and Angular. You will work on a variety of projects, including the design and implementation of RESTful APIs, microservices, and front-end components. Your role will involve applying best practices in software development, including test-driven development (TDD) and automated unit testing, to ensure the delivery of high-quality software solutions.
Key Responsibilities:
- Develop and Maintain Applications: Design, develop, and maintain web applications using .NET, C#, ASP.NET, and Angular.
- RESTful API Development: Create and manage RESTful APIs to enable seamless integration between front-end and back-end systems.
- Microservices Architecture: Work on microservices-based architectures to enhance scalability and maintainability of applications.
- Automated Unit Testing: Implement automated unit tests to ensure code quality and reliability.
- Test-Driven Development (TDD): Apply TDD principles to write efficient and effective code.
- Database Management: Design and manage databases using MSSQL, ensuring data integrity and performance.
- Collaboration: Work closely with cross-functional teams, including front-end developers, UX/UI designers, and product managers, to deliver high-quality software solutions.
- Documentation: Maintain comprehensive documentation for code, APIs, and system architecture.
Required Skills and Qualifications:
- Proficiency in .NET Technologies: Strong experience with .NET, C#, and ASP.NET.
- Front-End Development: Expertise in Angular for building dynamic and responsive user interfaces.
- RESTful APIs: Experience designing and consuming RESTful APIs.
- Microservices: Knowledge of microservices architecture and implementation.
- Database Skills: Proficiency in MSSQL for database design and management.
- Automated Unit Testing: Experience with automated unit testing frameworks and tools.
- Test-Driven Development: Familiarity with TDD methodologies and best practices.
- Problem-Solving: Strong analytical and problem-solving skills with the ability to troubleshoot and resolve issues efficiently.
- Communication: Excellent verbal and written communication skills.
Preferred Qualifications:
- Experience with additional front-end frameworks or libraries.
- Knowledge of DevOps practices and tools.
- Familiarity with Agile methodologies.
What We Offer:
- Competitive salary and benefits package.
- Opportunities for professional growth and development.
- Collaborative and inclusive work environment.
- Flexible working hours and remote work options (if applicable).
- Previous working experience as a MySQL Developer for at least 3 years
- Identify opportunities for improved performance in SQL operations and implementations
- Oversee the operations of the production and staging environments databases
- Give design recommendations for database functions that meet business operating standards while improving the efficiency of business processes
- Train and mentor junior personnel on best practices
Candidate Profile:
- Bachelor’s/Master’s degree in Engineering, Computer Science
- At least 5+ years of relevant experience as a database programmer
- Excellent MySQL/PostgreSQL/MS-SQL development skills
- Experience in writing stored views, procedures, triggers etc.
- Excellent knowledge in RDBMS (important features)
- Strong problem-solving skills, technical troubleshooting, and diagnosing
- Solid knowledge of RDBMS and NoSQL technologies
- Experience in developing back-ends for enterprise systems
- Knowledge of debugging, performance and optimization techniques
- Experience in RDBMS technologies like MySQL, PostgreSQL etc.
- Experience in No SQL technologies like MongoDB, Cassandra etc.
- Knowledge of Caching DB like Redis, Memcached etc.
- Knowledge of Search DB like Solr, Elasticsearch etc.
- Demonstrated ability to deliver in a fast-paced environment.
About us:
HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.
We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.
To know more, Visit! https://www.happyfox.com/
We’re looking for a Senior Backend Engineer to join our engineering team to help build and maintain our growing list of products. You should have prior experience being responsible for building sufficiently complex features by yourself.
Responsibilities:
- Implement product features by writing clean, robust, reusable code with tests
- Conduct peer reviews to keep the codebase a great environment to work on
- Collaborate with Product Managers, Designers and Engineers to deliver high-quality features
- Bring new ideas and best practices to improve the team and the codebase
Requirements:
- 5+ years of professional work experience
- Proficiency in backend programming languages like Python
- Experience working with web application frameworks like Django
- Experience in building web services using relational databases like PostgreSQL or NoSQL databases like MongoDB
- Proficiency in writing highly performant and scalable code
- Experience in building REST APIs and a good understanding of best practices around building APIs
- Good communication skills with an ability to articulate your views
- Excellent analytical and problem-solving skills
Introduction:
Tyroo’s Vidtech.ai is one of the largest independent marketing automation cloud built for the video first world. We build softwares and platforms that allow our partners to derive maximum yields on their marketing spends on various video first social platforms. We work on problems that involve building high availability, low latency solutions which require computing optimal decisions using various self-created modules as well as pre-available modules popular in the ML and Big Data world.
We are looking for a back-end developer who has at least 1 years professional experience in building systems on either Python or Node.js and is able to become an anchor/pillar for the team. The role will require you to architect and develop systems/features needed for our marketing automation products. Strong leadership and mentoring skills are also necessary so that the individual can train, educate and manage junior resources.
Key Requirements:
- Must be able to tackle complex business problems by breaking it down into set of simpler problems and architect solutions for the same
- Must exhibit thought leadership and should be committed towards mentoring and team building
- Must have excellent communication skills as the individual needs to collaborate with Business and Product team
- Must be proactive towards changing software development landscape and keep upskilling
- Must be able to contribute in setting up best practices and effective design patterns in complete development lifecycle.
Technical Requirements:
- Must have 1+ years’ experience in developing scalable systems on Python/Node.js with strong grasp on microservices and serverless architectural patterns
- Must have prior experience with databases like MySQL, Elasticsearch, MongoDB, Redis
- Must be exposed to cloud platforms like AWS or GCP and containerization using Dockers
- Must have worked with RESTful APIs and WebSockets
- Must have deep understanding of HTTP, web browsers and token-based authentication/authorization (OAuth, JWT)
- Must be experienced on Version Control Tools (Git) and Package Managers (npm, yarn, pip)
- Must adhere to coding standards and have the habit of doing unit testing along with regular and rigorous code reviews
- Should know about microservices orchestration using Kubernetes, web servers like Nginx/Apache and queuing systems like Kafka/Kinesis
- Contribute to architectural and design discussions.
- Design, Develop & Unit test features in the product.
- Ensure smooth and timely communication with both the internal and external stakeholders.
- Participate in estimations and ensure timely delivery of the features.
- Conduct peer reviews and ensure the quality of committed code.
Essential Experience And Skill-Set You Should Have
- Should have at least 2-4 years of experience in software development.
- Should have at least 2 years of hands-on experience in Java as a programming language.
- Should be well versed with Java 8 or above.
- Strong foundation in computer science, with strong competencies in Data Structures, algorithms, and their space-time complexities.
- Expertise in developing and consuming RESTful, micro-services using Spring Framework.
- Expertise with Spring data persistence frameworks such as JPA, -Repositories, Entities, Entity Manager etc.
- Exposure to Spring Cloud Frameworks such as Discovery, Config, Spring Cloud Gateway, Ribbon.
- Good to have knowledge on other Spring Frameworks such as Spring Security, Spring AOP.
- Must be proficient with the Linux commands.
- Strong debugging and troubleshooting expertise
- Good working knowledge of Relational and Non-Relational Databases.
- Sound understanding of Agile Software Development Processes like Scrum & Kanban.
- Deep practical knowledge of Domain Driven Design approach to software design.
- Experience writing and maintaining Unit and Integration tests.
Additional Desirable Qualifications
- Good to have knowledge on Java reactive framework.
- Understanding of CI/CD (Jenkins, Maven, Docker, Kubernetes).
- Knowledge on message queueing frameworks like RabbitMQ / ActiveMQ/ Kafka will be add-on.
- Identity & Security Domain Knowledge covering OAuth2, OpenId - Connect, Digital Signatures & Certificates.
- Domain knowledge of Ed-tech industry will be a plus
Required Soft Skills
- A self-starter attitude, the ability to work independently and in a group, demonstrated initiative, and good writing/briefing skills are great to have.
- Should be good at analytical thinking and breaking down large problems into solvable chunks.
- Demonstrated the ability to think creatively and come up with ideas/thoughts with significant business/ organizational impact.
- Ability to quickly adapt to changing technological trends.
Role Description
The SDE 2/3 will be part of the engineering/development team in Games24x7 Pvt. Ltd. and will be responsible for taking ownership of the core products of the company. The applicant must have good communication, interpersonal, technical and analytical skills in order to take part in the collaborative and cooperative development process that delivers the high quality software we use to provide the best possible playing experience to our players. He/she must be an expert in the Java programming language and needs to be familiar with popular IDEs, tools and scripting languages on the Linux operating system. Familiarity with an RDBMS, preferably PostgreSQL, is essential to succeed in this position.
General Accountabilities/Job Responsibilities:
- Participate in the requirements analysis, design, development and testing of applications.
- Write clean and efficient code and stay hands-on with it.
- Write high level code, code review, unit testing and deployment.
- Ensure practical application of design principles with a focus on the user experience, usability, template designs, cross browser issues and client server concepts.
- Contribute to the development of project estimates, scheduling, and deliverables.
- Work closely with QA team to determine testing requirements to ensure full coverage and best quality of product.
- Take up the opportunities to mentor and guide junior team members in excelling their jobs.
Requirements:
- B.E. /B.Tech. in Computer Science or MCA from a reputed university.
- 3-12 years of experience in software development, with emphasis on JAVA/J2EE Server side programming.
- Hands on experience in core Java, multithreading, RMI, socket programing, JDBC, NIO, webservices and design patterns.
- Knowledge of distributed system, distributed caching, messaging frameworks, ESB etc.
- Experience in Linux operating system and PostgreSQL/MySQL/MongoDB/Cassandra database
- Additionally, knowledge of HBase, Hadoop and Hive is desirable.
- Familiarity with message queue systems and AMQP and Kafka is desirable.
- Experience as a participant in agile methodologies.
- Excellent written and verbal communication skills and presentation skills.
- This is not a fullstack requirement, we are looking for a purely backend expert.
- In-depth knowledge of at least one programming language such as Clojure, Go, Python, Java, Javascript (Node), Ruby, Erlang/Elixir
- Thorough understanding of PostgreSQL. Experience working with views, common table expressions (CTE), window functions, joins, different kinds of indexes, etc.
- Practical knowledge of Linux server management
- Understanding of functional programming concepts
- Knowledge of Chef, Puppet, Salt, etc. is a plus
- Experience in distributed systems is a plus
Responsibilities:
- Plan future implementations by working closely with the product team
- Deliver an amazing user experience by working with the front-end developers
- Write test suites and deploy code into production
- Setup monitoring and alerts for in-production services
- Automate deployments
Continue if:
- You want to build a world-class Saas B2B communication product, using the latest tools, from scratch
- You love to code 8+ hours a day and solve hard problems by building software you are proud of
- You enjoy working with directly with amazing entrepreneurs
- You are driven by the desire to learn
- You like the pressure to perform because it makes you a better person
- You are passionate about getting stuff done
- You are passionate about making a tangible difference in the world
- Passionate about writing elegant, functional efficient code
Recruitment stages:
- Resume Screen
- Phone screen
- Technical interview and take-home assignment
- Interview with founders
- Offer
Why Unifize:
- The co-founders have been running companies in at least five countries over the past fifteen years, including deep experience in technology, operations and sales in engineering/manufacturing businesses.
- We are part of Techstars first India batch, and part of Target and Airbus Accelerators
- Attended universities that are consistently ranked in the Top 10 in the world.
- We have a track record of raising capital and strong existing relationships with the finance community in both India, the US and the UK. We have funding for at least the next 24 months.
- We have strong domain expertise in the industry they are trying to disrupt. However, we still followed the discipline of spending six months doing rigorous customer development spanning six countries before defining their product or writing a single line of code. We have already identified and are working with ten customers.
- We have very high expectations from the candidates that we do select, especially in terms of first-principles thinking, communication and accountability. We will not select average candidates, and we want to encourage our employees to see Unifize as a learning ground for possibly starting their own technology businesses in the future.
- We strongly believe in evidence-based decisions, transparency, corporate governance, meritocracy, and an open forum for discussion.
- We explicitly want to build a team from different backgrounds and with a wide range of interests and experiences. We are committed to building a gender-balanced organization.
About Unifize:
- Unifize helps teams that manage repeatable processes reduce wasted time by up to 95% by organizing their emails and other conversations around objectives.
- We build a cloud-based chat application that helps these companies measure and reduce time and errors in their communication processes, so their teams can focus on selling better products to happier customers.










