
About ZYSYGY
ZYSYGY is building Germany's zero-fee payment network. Merchants pay zero transaction fees. We route payments directly over SEPA Instant, bypassing Visa, Mastercard, and the entire card network chain. No hardware. No card reader. Just a phone.
We are building the first company to combine a fully software-based merchant POS with a consumer super-app for everyday financial life: payments, transport, utilities, government services, all in one place. Think what UPI did for India. We are doing it for Germany, from the ground up, on banking rails.
Role Overview
You will join the core engineering team as a founding engineer. You will own the backend payment engine end to end: transaction flows, wallet management, SEPA Instant settlement, KYB/KYC integration, recurring mandates, refund logic, and the compliance export layer (DATEV, Kassenbuch, GoBD, fiskaltrust). On mobile, you will contribute to the React Native consumer and merchant apps alongside our mobile engineer.
You will own what you build from development through deployment, monitoring, and production reliability. The architecture decisions you make in the first six months will run in production for years.
What you will do
Design and build the backend payment engine: transaction flows, wallet management, SEPA Instant settlement, offline payment authorization, and recurring mandate billing.
Own KYB/KYC integration and the compliance export layer: DATEV, Kassenbuch, GoBD, and fiskaltrust for KassenSichV.
Build REST APIs for financial-grade reliability and high-throughput transaction processing, including full R-transaction handling and reconciliation pipelines.
Contribute to the React Native consumer and merchant mobile apps alongside our mobile engineer.
Own the full lifecycle of what you build, from development through deployment, monitoring, and continuous improvement.
Integrate AI tooling into your development workflow as a matter of course: code generation, automated testing, and intelligent review.
Who you are
Meaningful hands-on experience building payment systems, fintech infrastructure, or financial APIs.
You have designed a ledger. You understand double-entry bookkeeping, immutable transaction records, and why you never update a financial row.
You have solved the partial failure. Money left one wallet and did not arrive in the other. You know how to detect it, resolve it, and make sure it does not happen again.
You understand idempotency at a design level. You have built systems that survive client retries, duplicate webhooks, and network drops without double-charging anyone.
You have built or reasoned about reconciliation: detecting discrepancies between your internal ledger and an external settlement file, and resolving them reliably at scale.
You understand KYC and KYB state machines, what happens when verification status changes mid-transaction, and what a regulator expects from your audit trail.
You are comfortable with SQL databases and own the full lifecycle of your code from development through deployment.
You can communicate technical decisions clearly to non-technical stakeholders. At this stage of the company, that matters.
You are a continuous learner. Payments infrastructure is a deep domain and you treat it that way.
You are comfortable with ambiguity and early-stage risk. There is no playbook yet. You will help write it.
Strong academic background preferred. Demonstrated engineering ability matters more than institution.
Relocation
Relocation to Munich, Germany, is on the table for the right candidate, including visa support.
Connect with the Founder
You can also connect with me on LinkedIn at www.linkedin.com/in/shabbir-maimoon

About ZYSYGY
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Job Title: Senior Python Developer with AWS
Company: P99soft
Experience: 6+ years
Location: Hyderabad
Job Description:
P99soft, a leading technology company, is seeking a talented Senior Python Developer with expertise in AWS to join our dynamic team in Hyderabad. As a Senior Python Developer, you will play a key role in designing, implementing, and maintaining robust and scalable software solutions. If you have a passion for Python development and extensive experience with AWS technologies, we encourage you to apply and be a part of our innovative and collaborative work environment.
Responsibilities:
- Design, develop, test, and deploy high-performance and scalable Python applications.
- Collaborate with cross-functional teams to define and implement innovative solutions for the company's software needs.
- Work closely with stakeholders to understand business requirements and translate them into technical specifications.
- Utilize your expertise in AWS services to architect and implement cloud-based solutions.
- Troubleshoot and debug issues, ensuring the overall quality and performance of the software.
- Stay updated on industry trends and best practices to continuously improve software development processes.
Requirements:
- Bachelor's degree in Computer Science, Engineering, or a related field.
- Proven experience as a Senior Python Developer with a minimum of 6 years of hands-on development experience.
- Strong proficiency in Python and experience with popular frameworks such as Django or Flask.
- In-depth knowledge of AWS services and experience with cloud-based architecture.
- Solid understanding of software development principles, design patterns, and best practices.
- Experience with database systems, both SQL and NoSQL.
- Excellent communication and collaboration skills.
- Ability to work independently and as part of a team in a fast-paced environment.
How to Apply:
If you have a passion for backend development, possess the required experience, and are excited about contributing to innovative projects, we invite you to apply. Please submit your resume, cover letter, and any relevant portfolio or project samples to Anusha Kalidindi/Sravani Chiruvolu
P99soft is an equal opportunity employer, dedicated to fostering diversity and creating an inclusive workplace for all employees.
Strong Backend Engineer Profiles
Mandatory (Experience 1) – Must have 2+ years of hands-on Backend Engineering experience building production-grade systems in a B2B SaaS or product environment
Mandatory (Experience 2) – Must have strong backend development experience using at least one backend framework such as FastAPI / Django (Python), Spring (Java), or Express (Node.js)
Mandatory (Experience 3) – Must have a solid understanding of backend fundamentals, including API development, service-oriented architecture, data structures, algorithms, and clean coding practices
Mandatory (Experience 4) – Must have strong experience working with databases (SQL and/or NoSQL), including efficient data modeling and query optimization
Mandatory (Experience 5) – Must have experience designing, building, and maintaining APIs and backend services, including integrations with external systems (CRMs, payment gateways, ERPs, data platforms, etc.)
Mandatory (Experience 6) – Must have experience working in cloud-based environments (AWS / GCP / Azure) and be familiar with Git-based collaborative development workflows
Mandatory (Domain) – Experience with financial systems, billing platforms, fintech applications, or SaaS revenue-related workflows is highly preferred
Mandatory (Domain) – Experience with financial systems, billing platforms, or fintech applications is highly preferred (fintech background is a strong plus)
Mandatory (Company) – Must have worked in product companies / startups, preferably Series A to Series D
Preferred
Preferred (Education) – Candidates from Tier - 1 engineering institutes (IITs, BITS are highly preferred)
We are looking for a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐉𝐚𝐯𝐚 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 who is passionate about 𝐝𝐞𝐞𝐩 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠, 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐢𝐜 𝐩𝐫𝐨𝐛𝐥𝐞𝐦-𝐬𝐨𝐥𝐯𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 at scale.
This role is 𝐧𝐨𝐭 about basic API development or framework-heavy work. You will be part of the 𝐜𝐨𝐫𝐞 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 𝐭𝐞𝐚𝐦, working close to the heart of the product where 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲, 𝐚𝐧𝐝 𝐜𝐨𝐫𝐫𝐞𝐜𝐭𝐧𝐞𝐬𝐬 𝐭𝐫𝐮𝐥𝐲 𝐦𝐚𝐭𝐭𝐞𝐫.
𝐖𝐡𝐚𝐭 𝐘𝐨𝐮’𝐥𝐥 𝐃𝐨
▪️ Design and build 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 that operate reliably under heavy load
▪️Develop and implement 𝐜𝐮𝐬𝐭𝐨𝐦 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐬 for complex, real-world business problems
▪️Identify and resolve 𝐂𝐏𝐔, 𝐦𝐞𝐦𝐨𝐫𝐲, 𝐈/𝐎, 𝐚𝐧𝐝 𝐜𝐨𝐧𝐜𝐮𝐫𝐫𝐞𝐧𝐜𝐲 𝐛𝐨𝐭𝐭𝐥𝐞𝐧𝐞𝐜𝐤𝐬
▪️Build backend services where 𝐥𝐚𝐭𝐞𝐧𝐜𝐲, 𝐭𝐡𝐫𝐨𝐮𝐠𝐡𝐩𝐮𝐭, 𝐚𝐧𝐝 𝐫𝐞𝐥𝐢𝐚𝐛𝐢𝐥𝐢𝐭𝐲 are critical
▪️Own 𝐝𝐨𝐜𝐮𝐦𝐞𝐧𝐭 & 𝐏𝐃𝐅 𝐩𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬 end-to-end, including:
- Composition
- Rendering
- Optimization
- High-volume document generation
▪️Make 𝐬𝐭𝐫𝐨𝐧𝐠 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐝𝐞𝐜𝐢𝐬𝐢𝐨𝐧𝐬 and take ownership of backend architecture
▪️Mentor engineers by setting 𝐡𝐢𝐠𝐡 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 𝐬𝐭𝐚𝐧𝐝𝐚𝐫𝐝𝐬 𝐚𝐧𝐝 𝐛𝐞𝐬𝐭 𝐩𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬
𝐑𝐞𝐪𝐮𝐢𝐫𝐞𝐝 𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
▪️𝟓 𝐭𝐨 𝟏𝟎+ years of strong backend engineering experience
▪️Excellent expertise in 𝐂𝐨𝐫𝐞 𝐉𝐚𝐯𝐚 (𝐉𝐚𝐯𝐚 𝟖+) 𝐚𝐧𝐝 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭
▪️Strong knowledge of:
- Data Structures & Algorithms
- Multithreading and concurrency
- JVM internals and memory management
▪️ Proven experience designing 𝐜𝐮𝐬𝐭𝐨𝐦 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐬
▪️Deep backend experience 𝐮𝐬𝐢𝐧𝐠 𝐒𝐩𝐫𝐢𝐧𝐠 / 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭
▪️Strong understanding of:
- API design principles
- Fault tolerance and resilience
- Performance tuning and profiling
▪️Ability to reason about time and space complexity
▪️Solid database fundamentals:
- Query optimization Indexing
- Transaction management
𝐖𝐡𝐚𝐭 𝐖𝐞’𝐫𝐞 𝐋𝐨𝐨𝐤𝐢𝐧𝐠 𝐅𝐨𝐫
Engineers who enjoy solving hard problems, not just wiring frameworks
Strong analytical thinking with a focus on trade-offs and optimizations
High ownership mindset with attention to performance and maintainability
📩 Interested candidates can apply
Note: CTC not a constraint for the right candidate.
Looking for Backend Developers (Node.js)
Roles & Responsibilities
- This role will be based in our brand new Hyderabad office. Join us in India’s beautiful “City of Pearls” and bring your ambition to life.
- You'll be set up for success if you have:
- Working knowledge of Typescript and JavaScript development
- Basic understanding of NodeJS development and its eco system
- Basic understanding of SQL (MySQL and/or Postgres) and NoSQL (Mongo DB / DynamoDB) databases
- Basic understanding of REST / SOAP API schematics
- Basic understanding of code versioning tools(GIT, SVN).
- Strong computer science and Engineering background
- Even better if you have:
- Good understanding of using container technologies like Docker for application packaging and running them on Cloud
- Good understanding in setting up CI/CD for application stack
- Working exposure in test driven development and its methodology like Code coverage etc
- Good understanding in using code quality tools to measure and improve on technical debt
- We bring ambition to life. We are innovators, game-changers and pioneers. So if you want to push boundaries and make an impact, this is the place to be.
- As part of our team you'll have the opportunity to make your mark and the power to make change happen. We're doing things no-one has done before, giving fans and customers access to sport anytime, anywhere. We're using world-class technology to transform sports and revolutionise the industry and we're not going to stop.
- If you're ambitious, inventive, brave and supportive, then you're the kind of person who's going to enjoy life at our organisation.
- We are committed to fostering an inclusive environment, both inside and outside of our walls, that values equality and diversity and where everyone can contribute at the highest level and have their voices heard. For us, this means hiring and developing talent across all races, ethnicities, religions, age groups, sexual orientations, gender identities and abilities.
- If you’d like to include a cover letter with your application, please feel free to. Please do not feel you need to apply with a photo or disclose any other information that is not related to your professional experience.
- Our aim is to make our hiring processes as accessible for everyone as possible, including providing adjustments for interviews where we can.
- We look forward to hearing from you.
Job description
- Engage with the business team and stakeholder at different levels to understand business needs, analyze, document, prioritize the requirements, and make recommendations on the solution and implementation.
- Delivering the product that meets business requirements, reliability, scalability, and performance goals
- Work with Agile scrum team and create the scrum team strategy roadmap/backlog, develop minimal viable product and Agile user stories that drive a highly effective and efficient project development and delivery scrum team.
- Work on Data mapping/transformation, solution design, process diagram, acceptance criteria, user acceptance testing and other project artifacts.
- Work effectively with the technical/development team and help them understand the specifications/requirements for technical development, testing and implementation.
- Ensure solutions promote simplicity, efficiency, and conform to enterprise and architecture standards and guidelines.
- Partner with the support organization to provide training, support and technical assistance to operation team and end users as necessary
- Product/Application Developer
- Designs and develops software applications based on user requirements in a variety of coding environments such as graphical user interface, database query languages, report writers, and specific development languages
- Consult on the use and implementation of software products and applications and specialize in the business development environment, including the selection of development tools and methodology
Primary / Mandatory skills:
- Overall Experience: Overall 4 to 6 years of IT development experience
- Design and Code NodeJS based Microservices, API Webservices, NoSql technologies (Cassandra/MongoDb)
- Expert in developing code for Node-JS based Microservice in TypeScript
- Good Experience in understanding the data Transmission through pug/sub mechanism like Event Hub and Kafka
- Good Understanding of Analytics and clickstream data capture is HUGE Plus
- Good understanding of frameworks like Java Spring Boot, Python is preferred
- Good understanding of Microsoft Azure principles and services is preferred
- Able to write Unit test cases
- Familiarity with performance testing tools such as Akamai SOASTA is preferred
- Good knowledge on Source Code control like GIT, code clout, etc and understanding of CI/CD(Jenkins and Kubernetes)
- Solid technical background with understanding and/or experience in software development and web technologies
- Strong analytical skills and the ability to convert consumer insights and performance data into high impact initiatives
- Experience working within scaled agile development team
- Excellent written and verbal communication skills with demonstrated ability to present complex technical information in a clear manner to peers, developers, and senior leaders
- The desire to be continually learning about emerging technologies/industry trends
About Us
Our client is the ultimate secure platform to trade popular cryptocurrencies and earn an interest up to 17% p.a. on your crypto holdings.
We offer trading with the lowest fee in the market and offer the highest interest on your crypto assets to help compound your wealth, all on a single platform.
With our all-in-one trading and investment solutions, we empower users to navigate the crypto-verse.
Job Location: Bangalore
Role & Responsibilities
- 4+ years of recent hands-on coding and in-depth knowledge of building applications in the python framework.
- Have in-depth knowledge of development in Django framework, hands-on experience in working with WebSockets, deploying and managing applications in AWS.
- Have hands-on experience in working with storage, server, and client technologies
- Have testing, and debugging skills, and have experience in working with git, aws.
- Solid OOP and software design knowledge – you should know how to create software that’s extensible, reusable, and meets desired architectural objectives.
- Work with the product team to understand end-user requirements, formulate use cases, and then translate that into a pragmatic and effective technical solution.
- Dive into difficult problems and successfully deliver results on schedule.
- Can take ownership of end to end system
- Firefight with the production issues
- Experience in a peak performance organization, preferably a tech startup
Regards
Team Merito
Role: Technical Lead
Location: Mumbai/Kolkata
Years of Experience - 9 to 15 years
Qualifications:
- Required person as .net core, team Management,Good communication,Plus Rest API,AWS Lambda,mySql
- AWS API Gateway .
- Bachelor’s degree preferably in Computer Science, Computer Engineering or related field.
- 9 to 12 yrs years’ experience in technology related roles including relevant work as technical architect.
- Experience working with latest software technologies (.Net core 3.1+, MVC/WCF/Web API, cloud hosted (AWS) , mobile ready software products (Angular 6+/React.js)
- Experience in AWS cloud.
- Experience working with GIT/TFS, CI/CD setups, Application Monitoring, Logging and Analysis tools
- Experience working with Service Oriented Architecture
- Experience working in an Agile-SCRUM environment using tools like Jira or equivalent
- Experience working with international customers (US and UK preferable)
- Experience in customer interaction and ability to present solutions and consult clients on technology solutions.
- Ability to effectively communicate with various levels of employees ranging from entry level to senior leadership.
- Proven strong relationship-building and communication skills with team members and business users. Ability to coach and mentor internal teams and customers.
- Highly motivated with excellent verbal and written communication, presentation, facilitation, negotiation and problem solving skills.
- Self-starter with strong organizational and time management skills, self-directed and able to handle multiple priorities with demanding timeframes.
- Willingness and ability to work flexible hours and with minimal supervision.
- Willingness and ability to travel domestic and occasional international across US and Europe.
- Proficient using standard software, such as MS Office applications, Google Apps, and communication and diagramming/presentation tools.
EXPERIENCE: 7 to 9 years in Java 2 Enterprise server side development. Must have applied knowledge of design patterns needed for building REST APIs and services for performance and scale.
SKILLS:
- Problem Solving and application of Object Oriented principles to development
- REST API development using Java, JAX-RPC,
- Server side development using Java, Spring Boot, Node.js
- Concurrent programming with Java
- Database programming in SQL with Oracle, MySQL or other RDBMs.
- Deployment to AWS and Kubernetes and building with Maven
- Affinity towards server side development
- Ability to understand existing code and re-engineer/re-factor/redesign.
- Written and spoken English communication and articulation.
NICE TO HAVE:
- Working knowledge of GO Lang and Python scripting
- AWS Certifications
- Working knowledge of Elastic Search based persistence and search
- Secure coding practices
EDUCATION: Bachelor or Master's degree in Computer Science, Software Engineering or Information Technology or related disciplines.









