At DIGITALL we don't just deliver technology we deliver the future! We are explorers, knowledge-hunters, tech geeks, problem solvers and game changers who want to inspire and be inspired. Our DIGITALL people are always o…
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Full-time
Posted 3d ago
~40 hrs/week
Responsibilities
The Senior Backend Developer will architect and deploy scalable, cloud-ready server-side applications using Node.js and TypeScript. Responsibilities include managing PostgreSQL databases, implementing secure APIs, and maintaining automated testing suites within CI/CD pipelines.
Requirements
Candidates must have at least 5 years of server-side software engineering experience with advanced proficiency in Node.js and TypeScript. A deep practical knowledge of PostgreSQL and experience with contract-first API design using OpenAPI/Swagger are required.
Full job description
At DIGITALL we don't just deliver technology we deliver the future! We are explorers, knowledge-hunters, tech geeks, problem solvers and game changers who want to inspire and be inspired. Our DIGITALL people are always one step forward: working with top-notch technologies, creating innovations ahead of the market trends, sharing the passion for discovering better ways. As a human-centric organization, our teams are built on mutual respect and open communication, allowing everyone to be authentic, express ideas and unleash their potential. We are proud of our DIGITALL bright minds and never stop developing their skills to keep pushing boundaries together and do what we love. DIGITALL operates globally with a team of 1000 experts in 16 locations across 8 countries.
The department delivers innovative products and services to frontline staff working on over 6,000 projects throughout every Region and Global Practice. Our teams support and enable Bank priorities, boost operational efficiency and effectiveness, and facilitate Operational knowledge discovery. Our delivery model leverages global expertise, design and architecture, leading technology, and robust processes to deliver business solutions that ensure value for money.
Role Overview
We are looking for a Senior Backend Developer to design, build, and maintain scalable, cloud-ready server-side applications and APIs. You will define system architecture with an API-first mindset, optimize data strategies using PostgreSQL, and deliver secure, production-grade RESTful and streaming services. Experience with NestJS, PostGIS, and Azure-native deployment patterns will set you apart.
Key Responsibilities
Architect and deploy robust, maintainable backend services using Node.js and TypeScript, with a preference for NestJS as the application framework.
Author the OpenAPI/Swagger specification as the primary design artifact before any implementation
begins, using it as the contract between frontend and backend teams. RESTful services, streaming patterns (SSE, chunked transfer), and any inter-service interfaces are all derived from and validated against this spec.
Own schema design, complex query authoring, and performance tuning for PostgreSQL, including indexing strategies, partitioning, and transaction management, using modern ORMs or query builders (Prisma, TypeORM).
Implement spatial indexing and queries using PostGIS to store, process, and serve geospatial information efficiently.
Implement authentication and authorization mechanisms (JWT, OAuth2) and caching strategies (Redis).
Design and deploy services for cloud-native environments with a preference for Microsoft Azure
(Azure App Services, Azure Container Apps, Azure Database for PostgreSQL, Azure API Management,
Azure Service Bus).
Quality & Ops: Maintain automated testing suites (Jest, Supertest) and participate in CI/CD pipeline configuration.
Required Qualifications
5+ years of server-side software engineering experience.
Advanced proficiency in Node.js and TypeScript.
Deep practical knowledge of PostgreSQL - query optimization, indexing, partitioning, and transaction management.
Proven experience authoring OpenAPI/Swagger documents as the leading design artifact - contract
first, implementation second.
Proven track record of designing and maintaining production-grade REST APIs, including streaming response patterns (SSE, chunked transfer encoding).
Experience with unit and integration testing frameworks (Jest, Supertest).
DIGITALL is a European provider of digital solutions and services with 25 years of experience in the global market.
Industry
IT Services and IT Consulting
Company size
1,001-5,000 employees
Founded
2021
Headquarters
Frankfurt,
LinkedIn followers
16,209
We are DIGITALL - a European provider of digital solutions and services. With 25 years of experience in the global market, we offer a comprehensive range of innovative solutions and services that support core business processes in critical areas such as AI Services & Solutions, CRM & Workplace, Cyber Security, Data Services, Data Strategy, ESG, Software Engineering, and Cloud & Managed Services.
In addition to building a competitive portfolio, we have established strong partnerships with leading technology vendors and we are a key partner of Microsoft, Salesforce, and ServiceNow in Europe, providing consulting, implementation, and reselling support.
With a dedicated team of 1000 experts operating from 16 locations across 8 countries, we maintain a global presence.
Find out more on www.digitall.com.
Offices: Reuterweg 49, Frankfurt, 60323, DE · Zur Giesserei 19-27B, Karlsruhe, Baden-Württemberg 76227, DE · DAS Marina Burgas, Port of Burgas, Burgas, 8000, BG · Hauptstrasse 43 – 45, Eisenstadt, 7000, AT · Gertrude-Fröhlich-Sandner Str. 2, Vienna, 1100, AT
How many Technology jobs are open in Sofia, Bulgaria right now?
There are currently 950 open technology positions in Sofia, Bulgaria listed on Clera. New openings are added daily as companies post roles.
Which companies are hiring for Technology roles in Sofia, Bulgaria?
Companies currently hiring include Tieto, Hewlett Packard Enterprise, Playtech, Mercier Consultancy, AgileEngine, among others. Browse the listings above to see every active employer.
Are there remote or hybrid Technology jobs in Sofia, Bulgaria?
Yes — 650 of the 950 open technology positions offer remote or hybrid work (181 remote, 469 hybrid).
How do I apply for Technology jobs in Sofia, Bulgaria?
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.