


Desired Experience
3+ years
Job Description
What You’ll Do
- Design financial systems for scale. Measure, plan, iterate.
- Writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Setup and own the engineering architectures built around event sourcing, application sharding, database sharding, service communication mesh, etc.
- The tech: Go, Google Cloud Spanner, Kafka, Redis
What you bring to the table
- 3+ years of experience. Relevant experience is preferred.
- Knowledge of 2 common programming languages - Python & Go / Java & Node / Rust
- Comfortable in linux command line, AWS or GCP
- Strong unit test and debugging skills
- Great communication skills
Bonus if you have…
- Love building great products and engineering systems from scratch
- Are a Self-starter, Hustler and Curious to Learn
- Have an understanding of fundamental design principles behind a scalable application
- Thrive in an early-stage startup environment with less stability and more ambiguity
- Have an interest in financial products and/or cryptocurrency

About AJACKUS
About
Ajackus is a people-centric technology company that helps small to medium-sized businesses and digital startups grow faster. With 11 years of experience in creating purposeful impact, we assist clients in enhancing their technological capabilities by building highly efficient and accountable remote technology teams that use a patented architecture to create secure and scalable business solutions.
We’ve been recognized as a ‘Great Place To Work’ and are intentional about creating a diverse and flexible culture for our team. We believe in our values, our culture, and in providing a platform for every individual to share their suggestions and ideas through an ownership-based model. For our strong ethics and value system, we have been recognized by the Government of India under the 'Companies that Care' initiative.
Ajackus has team members working from every part of India, our hybrid work policy allows us the flexibility and choice to work from anywhere while being productive and efficient. We provide a lucrative bouquet of benefits that don't just focus on great compensation structure but cover the holistic perspective of an associate's life.
Our solutions have saved lives (Healthcare), brought transparency in commerce (Fintech), helped people with the assets for life (Real-Estate), and allowed people to build on top of what we have created (Open Source). Besides these, we have extensively explored emerging technologies like IoT, AI/ML, and worked in industries like electronics, telecommunication, e-commerce, mental health & wellness, travel, media & publishing, entertainment, etc.
Our philosophy is simple, we may not know all the answers, but we know how to find all answers. Come, join us, in this journey to create a true impact in the world!
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Job Title: Mid-Level Backend Engineer
Location: Remote
Type: Full-time or Project Basis
About Us:
At Tese, we are committed to advancing sustainability through innovative technology. Our platform helps SMEs and financial institutions manage their Environmental, Social, and Governance (ESG) goals using AI, IoT, and data-driven insights. We are looking for a skilled Backend Engineer with mid-level experience to join our dynamic team and contribute to building scalable, robust backend systems.
Role Overview:
As a Mid-Level Backend Engineer, you will be responsible for developing and maintaining backend services that power our core platform. You will work closely with our frontend developers, product team, and data scientists to implement solutions that are scalable, secure, and efficient. You will focus on building APIs, managing databases, and optimizing the performance of our services.
Key Responsibilities:
- API Development:
- Design, develop, and maintain RESTful APIs that serve our frontend applications and third-party integrations.
- Ensure high-performance and responsiveness of APIs, while following best practices for security and scalability.
- Database Management:
- Work with both NoSQL (MongoDB) , SQL (PostgreSQL, MySQL) and databases, ensuring efficient data storage and retrieval.
- Optimize database queries and manage migrations, ensuring data integrity and consistency across the platform.
- Microservices and Cloud Infrastructure:
- Develop microservices architecture using Docker and Kubernetes, ensuring that services are scalable and maintainable (Good to have).
- Work with cloud platforms (AWS, GCP, Azure) to deploy and manage backend services, ensuring high availability and fault tolerance.
- Collaboration and Documentation:
- Collaborate with frontend developers, data scientists, and product managers to gather requirements and develop backend solutions.
- Write clear, maintainable code with proper documentation, including technical designs, API specifications, and test cases.
- Performance and Security:
- Monitor backend services to ensure optimal performance, identifying bottlenecks and implementing improvements.
- Implement security best practices for APIs, databases, and backend systems, including authentication, authorization, and data encryption.
Qualifications:
- Education: Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
- Experience: 3-5 years of experience in backend development, with a strong focus on building scalable and efficient systems.
- Technical Skills:
- Proficiency in backend programming languages such as Node.js, Python.
- Strong understanding of RESTful APIs.
- Hands-on experience with SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB) databases.
- Familiarity with cloud platforms such as AWS, Google Cloud.
- Knowledge of CI/CD pipelines and version control (e.g., Git).
- Soft Skills:
- Strong problem-solving abilities and the capacity to work independently as well as in a collaborative environment.
- Excellent communication skills, with the ability to explain complex technical concepts to both technical and non-technical stakeholders.
- A strong passion for sustainability and a desire to contribute to impactful projects that drive positive environmental change.
Preferred Qualifications:
The following qualifications are bonus, but not strictly necessary:
- Experience with Docker and Kubernetes for containerisation and orchestration (Good to have).
- Experience working with microservices architecture.
- Knowledge of ESG (Environmental, Social, and Governance) metrics and sustainability (Good to have).
- Familiarity with serverless architectures and API gateways.
Benefits:
- Competitive salary and benefits package and performance bonuses.
- Flexible working hours and remote work options.
- Opportunity to work on cutting-edge technology with a focus on sustainability.
- Professional development opportunities, including access to conferences and training.
How to Apply:
Interested candidates should submit their CV and a cover letter detailing their experience and passion for backend development and sustainability here.
Join Us:
Be a part of a forward-thinking team that is making a real difference in the world. At Tese, you'll have the opportunity to innovate, grow, and contribute to a more sustainable future through technology.
We're looking for a high-energy Java engineer to design and implement scalable microservices using Spring Boot. You'll collaborate across teams to deliver clean, efficient, and high-performance backend services.
🛠️ Key Responsibilities
- Design, develop, and maintain RESTful services and microservices using Spring Boot
- Utilize OOP, Java Collections, Exception Handling, and method overloading/overriding in modern coding practices
- Build and optimize multithreaded systems (Threads, synchronization, wait(), notify(), yield()) for performance and scalability
- Write unit and integration tests (JUnit, Mockito, Spring Test) to ensure code quality
- Collaborate with cross-functional teams (QA, DevOps, Product) through code reviews and feature planning
- Diagnose and resolve performance bottlenecksJVM tuning, SQL/caching optimizations
- Adhere to coding standards, best practices, and participate in peer code review
🎯 Required Skills & Experience
- Strong Java fundamentals: OOP, Collections, Generics, Exception Handling
- Concurrency mastery: multithreading, synchronization primitives (wait(), notify(), yield())
- Spring Boot: solid experience building, testing, deploying REST APIs
- Microservices: design, inter-service communication, stateless service patterns
- Testing frameworks: JUnit, Mockito, Spring Test
- Performance tuning: profiling, optimization with JVM settings and database queries
- Tools & practices: Git, Maven/Gradle, CI/CD pipelines, Docker/Kubernetes (plus)
- Soft skills: strong problem-solving, collaboration, and effective communication


Job Description: Python Backend Developer
Experience: 7-12 years
Job Type: Full-time
Job Overview:
Wissen Technology is looking for a highly experienced Python Backend Developer with 7-12 years of experience to join our team. The ideal candidate will have deep expertise in backend development using Python, with a strong focus on Django and Flask frameworks.
Key Responsibilities:
- Develop and maintain robust backend services and APIs using Python, Django, and Flask.
- Design scalable and efficient database schemas, integrating with both relational and NoSQL databases.
- Collaborate with front-end developers and other team members to establish objectives and design functional, cohesive code.
- Optimize applications for maximum speed and scalability.
- Ensure security and data protection protocols are implemented effectively.
- Troubleshoot and debug applications to ensure a seamless user experience.
- Participate in code reviews, testing, and quality assurance processes.
Required Skills:
Python: Extensive experience in backend development using Python.
Django & Flask: Proficiency in Django and Flask frameworks.
Database Management: Strong knowledge of databases such as PostgreSQL, MySQL, and MongoDB.
API Development: Expertise in building and maintaining RESTful APIs.
Security: Understanding of security best practices and data protection measures.
Version Control: Experience with Git for collaboration and version control.
Problem-Solving: Strong analytical skills with a focus on writing clean, efficient code.
Communication: Excellent communication and teamwork skills.
Preferred Qualifications:
- Experience with cloud services like AWS, Azure, or GCP.
- Familiarity with Docker and containerization.
- Knowledge of CI/CD practices.
Why Join Wissen Technology?
- Opportunity to work on innovative projects with a cutting-edge technology stack.
- Competitive compensation and benefits package.
- A supportive environment that fosters professional growth and learning.
Role and Responsibilities |
|
Required Skills |
|
-
Strong Java programming skills
-
Minimum of 5 years practical software development experience
-
Robust object-oriented design pattern knowledge and implementation experience using Java;
-
Python a plus
-
Advanced knowledge and experience developing and working with relational databases such as
-
Sybase and MySQL
-
Experience with multi-tier application architecture and high performance distributed and in-
-
memory caching solutions
-
Strong understanding of data modeling techniques
-
Strong foundation in SDLC best practices including test driven development, unit testing
-
discipline, agile development, and CI/CD strategies
enterprise-grade applications.
You will be part of a talented software team that works on mission-critical applications. Java
developer roles and responsibilities include managing Java/Java EE application development
while providing expertise in the full software development lifecycle, from concept and design to
testing.
Responsibilities and Duties
• Contribute to all phases of the development lifecycle
• Write well designed, testable, efficient code
• Ensure designs should follow compliance with specifications
• Prepare and produce releases of software components
• Support continuous improvement by investigating alternatives and technologies and
presenting these for architectural review
Qualifications
• BS/MS degree in Computer Science, Engineering, or a related subject
• Minimum 4.5 to 6 years of software development experience
• Proven hands-on Software Development experience
• Proven working experience in Java development
• Hands on experience in designing and developing applications using Java EE
platforms
• Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2,
Hibernate)
• Experience in the Spring Framework
• Very good English communication skills
• Optional:
o Good to have the knowledge of Angular JS framework.
o Experience to work on the Microservice architecture.
o Experience to work with Git hub & bitbucket.
o Agile methodology.

Job Description
- Architect highly scalable, highly available systems with minimal guidance.
- Developing p2p infrastructure systems to support blockchain interoperability
- Establishing policies and procedures that produce secure, high-quality software
- Write and review technical proposals
- Improve engineering standards, tooling, and processes
- Coding with concurrency, efficiency and scalability as primary motive
- Document systems, build runbooks, and automate those processes
- Being hands on by writing, testing, and deploying high-performance networking code
- Rigor on clean code, unit testing, code coverage and best practices
- Supporting and Leading the team of junior developers
Required qualifications
3+ years of experience in Golang, Strong knowledge of Go programming language, paradigms, constructs, and idioms, willingness to learn on the go, ability to write clean code, a strong sense of responsibility.
Tech Stack
Go, git, linux, bash, ability to work with Docker.
Nice to have
Experience developing in c++, cryptography and system software development experience, understanding of design patterns, understanding of operating systems and networks.
Job Summary
If you are passionate about technology, constantly seeking to learn and improve skillset, then you are the type of person we are looking for!
We are offering superb career growth opportunities, great compensation and benefits.
Java developers with only more than 7 Years of experience can apply.
Responsibilities and Duties
- Deliver tactical and strategic improvements to large scale Java/J2EE/Mobile based product
- Formulates and defines system scope and objectives through research and fact-finding to develop or modify moderately complex information systems
- Design, develop and test Java-based solutions using common standards and frameworks such as JAXB, JAX-WS, JAX-RS, JPA, JavaEE, Spring, and Hibernate
- Maintain and update all existing J2EE applications as needed
- Translate software requirements into working and maintainable solutions within the existing application frameworks
- Implement the product's lifecycle: Design, development, quality, deployment, and maintenance
- Develop and adhere to best-practices for developing applications
- Continuously contribute to team performance improvement and collaboration
- Collaborate effectively across teams
Benefits
Alternate Saturdays-Off!
Working Saturdays are Half-days!
Weekly Lunch
Birthday Celebrations
Festival Celebrations
Diwali Bonus
Annual Picnic
Healthiest and easy-going working experience with motivating team members.




